The White Book  HomeSpec Residential Specification Guide  British Gypsum

Foreword

British Gypsum is working collaboratively with housebuilders and developers to identify and develop residential products and services that will leave a legacy of sustainable, comfortable living environments. HomeSpec brings together a range of systems developed to provide housebuilders, architects and specifiers with internal lining solutions to meet the demands and requirements for modern homes.

In this sixth edition of the Residential Sector Guide, we have a new improved layout with updated information on national Building Regulations within England, Scotland and Wales and important information on how we can continue to support your business.

New to this edition is a range of new products and technologies as shown on page 2, we have also included details and information on our full range of Thistle plasters, and a new system selector guide showing the performance levels of each of our systems.

Our SpecSure® lifetime system warranty has been extensively tested and proven for use against the increasingly complex range of existing and new regulatory requirements facing the new build residential sector today.

We are proud to offer housebuilders and developers a unique premium package of products and services, unmatched in the house building industry, including: – Technical design support – Supervisory training of drylining trades – Site manager literature – Plasterboard recycling service – Our ‘Making Your House a Home’ guide, for your customers

Email: [email protected] british-gypsum.com 1 Contents

Page No. 01. Introduction 03 02. Sustainable residential development 07 03. External fabric 15 04. Separating walls 51 05. Separating floors 105 06. Flanking details 135 07. C reating perfect living spaces 171 Internal walls 174 Internal floors 202 Acoustic ceilings 216 Finishing advice 230 Supporting your customers 234

New products and technologies

ACTIVair Gyproc ThermaLine PIR Glasroc H TILEBACKER Gyproc Habito ACTIVair technology makes The latest addition to Designed for wet areas, Gyproc Habito is the latest the air up to 70% cleaner. the Gyproc ThermaLine Glasroc H TILEBACKER is now addition to the Gyproc Now available in a selection range, a cost effective available in both 6mm and performance board range. of our plasterboards and superior thermal solution 12mm boards. Designed for use in new acoustic ceilings ranges. performance board. homes as part of Lifestyle Wall, Gyproc Habito provides enhanced impact resistance and for the first time, fixing capability.

2 01 Introduction

Introduction

From a simple home extension to a major O1housing development – every project is important to us.

3 01 Introduction

Introduction When you work with us you can be assured of a great commitment to quality and service. Within this section you will discover more about us and our SpecSure® lifetime system warranty giving you total peace of mind, for you and your customers.

4 01 Introduction Who we are

For nearly a century, we’ve led the market in high performance building linings – providing plastering, plasterboard, drylining and ceiling solutions that have shaped the modern home interior.

We’ve worked with legislators and industry leaders to improve standards of fire safety, noise protection and comfort.

We’ve developed simple yet effective lining solutions that meet the changing needs of the industry, whilst adding value for both the housebuilder and homeowner. We are constantly looking at future needs and are already developing a new generation of plasters and plasterboards that will change the way linings are perceived.

We care passionately about our products and systems. We care about the people who specify and install them, and we go out of our way to develop new ideas that will improve the lifestyle of homeowners and their families, now and for generations to come.

From a simple home extension to a major housing development – every project is important to us.

We’re proud to be the industry leader.

We’ve built a business with five major UK manufacturing sites; five training centres; research, development and testing facilities that rank amongst the best in Europe; a technical support infrastructure that leads the industry and a network of 3,500 stockists to ensure national product availability. What’s more, we’re part of Saint-Gobain, a global operation serving customers in more than 50 countries.

Email: [email protected] british-gypsum.com 5 01

Who we are (cont’d)

Introduction Our promise

Solutions that will last a lifetime Our plaster and drylining solutions have generations of experience and technical know-how built-in. We use only the highest quality components, developed and tested to work together to deliver specified performance. That’s why we guarantee our systems with a unique SpecSure® lifetime system warranty.

SpecSure® is more than simply a performance warranty – it means the British Gypsum systems you specify: Our components – Have a guaranteed lifetime performance – Plasters with world-leading quality, consistency and performance – Have the technical expertise and experience of the UK’s leading interior lining specialist behind them – Plasterboards that have led the market for generations – Have been tested in UKAS-accredited fire, acoustic and structural test laboratories – Metal fixing systems that provide unique high strength and are easy and quick to install – Have been site tested to demonstrate installation integrity and simplicity – Specialist boards with extra performance for key areas like fire and impact resistance – Will be supported at every stage of the project by the UK’s leading on and off-site technical support personnel – Ceiling products for eye-catching design and stunning performance – Will perform to published parameters throughout the life of each system – Will be repaired or replaced by British Gypsum in the unlikely event of system failure attributed to unsatisfactory product / system performance

Total peace and mind for you - and your homebuyers!

6 Technical Advice Centre Tel: 0115 945 6123 02 Sustainable residential residential Sustainable development

Sustainable residential O2development Working with housebuilders to leave a legacy of sustainable, comfortable living environments for future generations.

7 02 Sustainable residential development

Responsible sourcing and sustainable solutions are at the heart of everything we do. Discover how we support sustainable residential development, plus read more about how our supply chain plays an integral part in our responsible sourcing strategy. You will also find an overview of the Code for Sustainable Homes and details of our Plasterboard Recycling Service, for an end-to-end recycling solution. development Sustainable residential

8 02 Sustainable residential development Sustainable residential residential Sustainable development

The Government has recognised the key role of new homes to both the UK economy and the fight against global warming.

New homes are essential to house a growing population. They bring new jobs, stimulate the manufacturing sector and get cash flowing. To meet our environmental obligations under the Climate Change Act, however, we must continually strive to improve the design and energy efficiency of the homes we build.

These two factors have been responsible for a dramatic change in our attitude to housebuilding over the past decade or so. By working together, housebuilders and manufacturers have raised performance levels and build standards, introduced innovative methods of construction and developed exciting new product and system solutions that are driving us towards our sustainability goals.

Today’s new homebuyers are the beneficiaries. Their homes are warmer, more comfortable and more economical to heat. Families are safer, healthier and as a result have become more discerning in their choice of home design and features. As a business, we will continue to build on our success to date. By working together with local communities, Government and all elements of the supply chain we will develop solutions that leave a legacy of sustainable, comfortable living environments for future generations.

Email: [email protected] british-gypsum.com 9 02 development Sustainable residential

10 Technical Advice Centre Tel: 0115 945 6123 02 Sustainable solutions

We ensure that our solutions don’t just meet your needs today – they meet all of our needs for tomorrow.

Sustainability is a challenge we embrace. It enables us to balance our responsibilities not only to housebuilders residential Sustainable and homeowners but to all of our customers, suppliers, employees and the communities in which we work and live. development

The way we manage our business, care for our employees and improve the quality of life for homeowners is as important to our future as is the way in which we care for the environment.

Social Our people are our business. We ensure a safe, healthy workplace, give them respect and nurture their talents to take our business forward. We train for leadership and build employee knowledge through a ten-stage Technical Development Programme at our Saint-Gobain Technical Academy.

Economic We ensure we are economically strong and work closely with our supply chain. We source materials responsibly and sustainably, and work hard to drive knowledge such as Health and Safety and responsible business management throughout the supply chain. Our Responsible Sourcing Strategy means our plasters, metal, cove and UK manufactured plasterboards qualify for extra credits in leading environmental schemes.

Environmental We were the first UK plaster and plasterboard company to gain ISO 14001 and use this standard for managing key areas like compliance, energy management, water usage and waste reduction across our business. We also played a key role in developing the Ashdown Agreement; an initiative which is helping to reduce landfilled waste across the construction industry.

For more details on our full sustainability agenda and achievements see www.british-gypsum.com/sustainability

Email: [email protected] british-gypsum.com 11 02 Responsible sourcing

The supply chain plays an integral part in sustainability performance. We are therefore committed to acting responsibly in our dealings with our customers and, since 2007, have implemented a strategy to ensure our suppliers do the same.

Our strategy covers three areas:

Health and Safety

development Health and Safety must be as important to our suppliers as it is to us. We work closely with our suppliers and carry out Sustainable residential SUSA (Safe and Unsafe Acts) and SMAT (Senior Management Audit Tool) audits to help them establish their own Health and Safety culture.

Environment As we do, our suppliers must care for the environment, from the way they adhere to legal requirements to the way they source their raw materials and deliver their products. Our procurement team carry out monitoring and measuring programmes and EMAT (Environmental Management Audit Tool) audits with our suppliers to understand, evaluate and reduce their impact on both the global and local environment.

Material stewardship It is important, for our own future and that of our customers’, that our suppliers act responsibly and proactively in the ownership and management of their own businesses and products.

Our strategy is based on the framework recommended as sustainable best practice by Government. We set objectives and targets, implement programmes of work and review our systems to ensure that we sustain progress in each of these areas.

Certified Responsible Sourcing - BES 6001

To assure our customers that they are sourcing materials responsibly and sustainably, our UK manufactured Gyproc plasterboard, Glasroc specialist board, Thistle plasters, Gypframe metal and Gyproc Cove products are independently certified to BES 6001, achieving an ‘Excellent’ rating.

This enables customers to gain extra credits against environmental frameworks, such as the Code for Sustainable Homes.

12 Technical Advice Centre Tel: 0115 945 6123 02 Plasterboard Recycling Service (PRS)

Our pioneering Plasterboard Recycling Service provides major benefits for housebuilders. It helps you to manage site waste more effectively and improve site safety. It also provides a unique tool to help you manage your Site Waste Management Plans (SWMP’s) – a must for all construction projects costing over £300,000. Sustainable residential residential Sustainable The PRS service removes and recycles your site plasterboard waste into new board. It then provides comprehensive data to

enable you to track waste, project by project, and identify and address waste hot spots. It is a valuable tool to help you drive development down the cost of waste management and ease the implementation of your statutory environmental obligations.

Plasterboard waste produced 1 on your construction site is stored in dedicated waste bags, dump bins or skips supplied by British Gypsum.

We’ll also send you a detailed 6 analysis of the waste you have produced – allowing you to We’ll collect your 2 plasterboard waste direct assess the performance of each of your sites. from your building site – and keep track of the waste produced by each site.

The approved raw material is used 5 to make a variety of products at our dedicated manufacturing plants – ready to be delivered to construction The gypsum core is then projects around the country. 3 separated from the paper lining and any other waste materials – ready for recycling.

The gypsum core is blended with natural gypsum or DSG*. The resulting raw material is then tested for quality before re-entering the 4 manufacturing process.

*De-Sulphar Gypsum (DSG) or synthetic gypsum is produced at coal-fired power stations in a process known as desulpharisation.

How PRS works What can we recycle? Depending on your preference, we’ll provide you with bags, dump bins or skips to house your waste. We’ll then collect – All British Gypsum plasterboard, including Rigidur H, them from your building site at times that are convenient DUPLEX grade board and thermal laminates for you. The process is flexible and reliable, and can be – Gyproc Cove scaled up or down to suit any construction project. – Gypsum based ceiling tiles Once we have removed your waste, we’ll provide – Drywall adhesive comprehensive feedback on the waste we recycle. We’ll – All Thistle plasters except Dri-coat provide information on the total tonnage of waste for a project, the average weight per bag or skip, and other – Rigidur H data that will help you identify and maximise both your – Specialist board products environmental performance and financial savings.

Email: [email protected] british-gypsum.com 13 02 Helping to create better homes

‘Rooms Made For You’ by British Gypsum is a new generation of products and services designed improve the lifestyle of homeowners and change the way that walls within the home are perceived in the future.

With over a century of experience in developing products and systems, this is a new way of thinking for us and we have worked closely with homeowners to truly understand the needs and wishes of people across the country.

The current products are just a start of our journey and developments are already underway to bring new products to market that will enhance homeowners living environment.

Lifestyle Wall is a brand new drylining system featuring Gyproc Habito plasterboard at its core, development our biggest ever product launch. Sustainable residential Lifestyle Wall has been developed to improve design and installation flexibility within the home. The solution allows items such as TVs, shelves and decorative items to be installed using just screws, without the need for specialist fixings. It also offers high impact resistance, making it ideal for busy households.

To bring the revolutionary system to market, British Gypsum has developed a comprehensive marketing campaign, including the brand making its TV debut, with adverts appearing on digital channels .

Hanging pictures, TVs or shelves is a common gripe for consumers because fixing to plasterboard can be so difficult. To address this issue head on, our innovation team right here in the UK, created Lifestyle Wall, and it’s now going to be rolled out globally. As well as being easier to fix into, Lifestyle Wall offers greater resistance to wear and tear.

14 Technical Advice Centre Tel: 0115 945 6123

03 External fabric 15

O3 External fabric keep to homes efficient energy Creating within. warmth the 03 External fabric

We have developed solutions to support the construction and operation of energy efficient homes,

and the reduction of CO2 emissions. This section details interior lining solutions for external walls, unheated spaces and warm roofs. Discover more about reducing air leakage and the thermal bypass effect, and guidance on designs that reduce the risk of rain penetration. Plus find out the latest1 legislation affecting housebuilding, including the new Part L 2013 edition, and a quick system reference for external fabric solutions.

1 This information was accurate at time of print. Please ensure that you check for up to date legislation. External fabric

16 03 Building homes for the future

Climate change is the biggest threat to our environment and needs a worldwide urgent and radical response. The Climate

Change Act became law in the UK in November 2008. It commits the UK to reduce CO2 emissions by a minimum of 34% by 2020, with a long term goal of an 80% reduction by the year 2050. Both targets are in comparison to a 1990 baseline.

The UK’s housing stock is responsible for 30% of primary energy use in the UK and 27% of the

UK’s CO2 emissions.

Therefore, the UK Government has signalled its intention to significantly reduce energy use in buildings as an important element of its climate change strategy, and its approach to securing energy supplies in the future. This means making our homes increasingly more energy efficient. External fabric External

National Building Regulations and energy efficiency improvement The minimum energy efficiency requirements are set out in national Building Regulations Approved Document Part L, Conservation of fuel and power (England and Wales) and Domestic Technical Handbook Section 6, Energy (Scotland). Supported by Approved Document Part F, Ventilation (England and Wales) and Section 3, Environment (Scotland) they are the key mechanisms through which the UK reduction targets will be achieved.

Email: [email protected] british-gypsum.com 17 03 Approved Document Part L1A 2010 Edition

Approved Document Part L1A (Conservation of fuel and power in new dwellings), refers to the energy performance of new-build houses and apartments. Compliance with Approved Document Part L1A 2010 is based on the carbon performance of the whole dwelling, given through the use of a SAP 2009 calculation.

Approved Document Part L1A 2010 distinguishes between requirements (the national Building Regulations) and guidance (supplementary information in the Approved Document Part L1A) to help developers better understand what is required and to give Building Control clearer guidance on how to check for compliance.

It targets improvements so that homes, when built, match One of the key features of the Part L1A the claimed Dwelling Emissions Rate (DER). There is growing evidence that dwellings do not, in practice, achieve the is a drive to close the gap between the intended energy performance. This is often referred to performance anticipated at design stage as the ‘performance gap’ and the notion of ‘confidence and what is actually achieved in practice. factors’ reward developers who adopt good quality control procedures, both in design and on site. External fabric

Key features Limiting values Maximum area weighted U-values are improved compared Reduced CO2 emissions to the 2006 standards. The area weighted U-values are

Part L1A 2010 aims to reduce CO2 emissions by 25% maximum values and are unlikely to be low enough to compared to 2006 Regulations. This is a 40% improvement comply with CO2 emissions requirements. over a dwelling built to the 2002 Part L national Building Regulations. Element 2006 2010 2013 The Target Emissions Rate (TER) Roof 0.25 0.20 0.20 2 The TER is the maximum allowable CO2 emissions per m 2 (KgCO2/m /yr) arising from energy used in heating, cooling, External wall 0.35 0.30 0.30 hot water and lighting. To comply, the DER must be no greater than the TER. Party wall N/A 0.20 0.20 (thermal bypass) The TER is calculated in much the same way as it was in Part L1A 2006. The main differences are that an improvement Floor 0.25 0.25 0.25 factor of 0.4 is used, rather than 0.2, to give the 40% improvement referred to above. The SAP 2009 methodology Windows 2.20 2.00 2.00

is also used to estimate the CO2 emissions from heating, hot water, lighting, pumps and fans. Design limits (W/m2K)

18 Technical Advice Centre Tel: 0115 945 6123 03

Approved Document Part L1A

Design submissions are now a requirement alongside Cavity party walls built submissions Part L1A 2010 no longer treats separating cavity walls as a In Part L1A 2006, it was recommended that a submission be zero heat loss element, due to the ‘thermal bypass’ or ‘party provided to Building Control prior to the building work being wall bypass’ effect. completed on site; but it wasn’t an absolute requirement. In Part L1A 2010 the person carrying out the work must Thermal bypass occurs where heat bypasses the thermal provide Building Control with the TER, DER and a list of envelope via cavity party walls and escapes to the external specifications before work starts on-site. environment. This causes heat loss from a location in the building that isn’t considered to be affected, or allows After the work has been completed, Building Control transport of heat around the insulation. Thermal bypasses must be notified of the TER and DER actually achieved, can render the insulation layer completely irrelevant to the and whether the building has been constructed as per the flow of heat in localised areas, and significantly worsen the design specification. fabric energy efficiency of the building.

Heat loss via thermal bypass can be reduced by measures External fabric External that restrict air movement through the cavity, by means of full-filling the cavity and / or by providing effective sealing around the perimeter.

Air permeability A pressure test should be carried out on three units of each dwelling type, or 50% of the instances of the dwelling type, whichever is the smaller. A confidence factor will also apply to dwellings not pressure tested.

Where a dwelling has been pressure tested, the measured value is used in the calculation of the DER. Where the dwelling has not been pressure tested, the value used in the DER calculation is the average of the measured values for dwellings of the same type but with the addition of a confidence factor of 2.0m3/(h.m2) at 50pa. This means that the design air permeability must be at most 8.0 in order to meet the maximum allowable value of 10.0 at completion of the dwelling.

Thermal bridging In Part L1A 2006, it is acceptable to assume a ‘y’ value of 0.08W/m2K if Accredited Construction Details (ACD) have been used. This is not possible with Part L1A 2010. Instead, the length of each junction should be measured, multiplied by the appropriate psi (µ) values and added up to produce an ‘effective’ ‘y’ value. The µ-values can either be values already supplied in the SAP 2009 document or supplied by the relevant approved Government ACD scheme. The µ-values can also be calculated for specific junctions. A confidence factor will be applied to the µ-value calculation for an individual junction if either: (a) the calculated µ-values are not from a Government approved scheme, or (b) if no on-site checks can be demonstrated to have been made. The confidence factor applied to the µ-value calculation is 25% or 0.02, whichever is the larger

Email: [email protected] british-gypsum.com 19 03 Approved Document Part L1A 2013 Edition

Main Changes to the 2013 Edition

– A new requirement, regulation 26A, has been introduced that requires new homes to achieve or better a fabric

energy efficiency target in addition to the CO2 target

– The notional dwelling used to determine CO2 and fabric energy efficiency targets is the same size and shape as the actual dwelling, constructed to a concurrent specification. The Part L 2013 specifications have been strengthened

to deliver 6% CO2 savings across the new homes build mix relative to Part L 2010

Amended compliance steps

1. Achieving the Target Emission Rate (TER) and the Target Fabric Energy Efficiency (TFEE)

The Target CO2 Emission Rate (TER) and the Target Fabric Energy Efficiency (TFEE) are the minimum energy performance

requirements for a new home. The TER is expressed as the mass of CO2 emitted in kilograms per square metre of floor area per year. The TFEE rate is expressed as the amount of energy consumed in units of kilowatt-hours per square metre of floor area per year. To comply, the Dwelling Emission Rate (DER) and Dwelling Fabric Energy Efficiency (DFEE) must be no worse than the TER and TFEE. External fabric 2. Limits on design flexibility The table below sets out the limiting standards for the properties of the fabric elements of the dwelling. Each stated value represents the area-weighted average for all elements of that type. In general, to achieve the TER and TFEE rate, a significantly better fabric performance is likely to be required.

Roof 0.20 W/m2K

Wall 0.30 W/m2K

Floor 0.25 W/m2K

Party wall 0.20 W/m2K

Windows, roof windows, glazed roof-lights, curtain walling and pedestrian doors 2.00 W/m2K

Air permeability 10.0 m3/h.m2 at 50 Pa

3. Limiting the effects of heat gains in summer Solar gains are beneficial to off-set demand in winter but can contribute to overheating in the summer.

4. Quality of construction and commissioning Dwellings should be constructed and equipped so that performance is consistent with the calculated DER and DFEE.

5. Providing information The owner of the dwelling should be provided with sufficient information about the building, the fixed building service and their maintenance requirements so that the building can be operated in such a manner as to use no more fuel and power than is reasonable in the circumstances.

20 Technical Advice Centre Tel: 0115 945 6123 03

Approved Document Part L1A 2013 Edition (cont’d)

The table below summaries the concurrent notional dwelling specification.

Element or system Values

Opening areas (windows and doors) Same as actual dwelling up to a minimum proportion of 25% of total floor area

External walls 0.18 W/m2K (including opaque elements of curtain walls)

Party walls 0.0 W/m2K

Floor 0.13 W/m2K

Roof 0.13 W/m2K External fabric External

Windows, roof windows, glazed roof-lights 1.4 W/m2K (whole window U-value) and glazed doors g-value = 0.63

Opaque doors 1.0 W/m2K

Semi-glazed doors 1.2 W/m2K

Airtightness 5.0 m3/hr/m2

Linear thermal transmittance Standardised psi values – See SAP 2012 Appendix R, except use of y=0.05 W/m2K if the default value of y=0.15 W/m2K is used in the actual dwelling

Ventilation type Natural (with extract fans)

Air conditioning None

If the actual dwelling is constructed entirely to this specification it will meet the TER and better the TFEE rate. The table above provides a summary of the concurrent notional building specification. However, it should be noted that this is not prescriptive and may not be the most economic specification in every case. Designers are free to explore alternative ways to meet the TER and TFEE rate in each case, provided that the specification meets all the other provisions within Part L, in particular the limiting fabric parameters in the table on the opposite page.

Email: [email protected] british-gypsum.com 21 03 External fabric External fabric

22 Technical Advice Centre Tel: 0115 945 6123 03 Approved Document Part L1B 2010 Edition

Approved Document Part L1B includes extensions, creating new dwellings through material change of use or material alterations to existing dwellings. Compliance with Part L1B is centred around CO2 emissions of the whole building, based on the factors within L1A, provided it is technically, functionally and economically feasible.

Part L1B states that where a person is to carry out work in an existing building, which involves the renovation of a thermal element, reasonable provision shall be made to improve the energy efficiency of the thermal element.

When carrying out renovation of thermal elements you should work on a simple payback of 15 years or less.

Example

– If the cost of implementing a measure is £430, and the value of the energy saving is £38 per year, the simple payback would be (430/38) 11.3 years – A lesser provision may be appropriate where there is a reduction of more than 5% of the internal floor area of the

room bounded by the wall. Similar provision applies relating to floor levels fabric External

SAP calculations are not required for existing dwellings, however, Part L1B gives notional U-values and design limits as shown below:

L1B Standards for new thermal Upgrading retained elements (W/m2K) thermal elements (W/m2K)

Wall 0.28 0.30 (0.70)1

Floor 0.22 0.25 (0.70)1

Pitched roof (insulation at ceiling level) 0.16 0.16 (0.35)1

Pitched roof (insulation between rafters) 0.18 0.18 (0.35)1

Flat roof (or roof with integral insulation) 0.18 0.18 (0.35)1

1 These figures detailed in brackets relate to the retained thermal element threshold. If the element is worse, then upgrade to the adjacent figure (except for cavity walls, which can be upgraded to just 0.55).

Email: [email protected] british-gypsum.com 23 03 External fabric External fabric

24 Technical Advice Centre Tel: 0115 945 6123 03 Domestic Technical Handbook Section 6 2010 Edition

In August 2007 the Scottish Executive appointed an The Target Emission Rate (TER) independent panel to advise on the development of a low The 2010 edition maintains a CO2 emissions based carbon building standards strategy to increase energy methodology for assessing the energy performance efficiency and reduce CO2 emissions from domestic and of new buildings. This allows designers to adopt a non-domestic buildings. The intention was to move the whole-building approach to design. In addition, there are energy performance standards for Scotland closer to measures to limit energy demand through the building the exacting energy performance standards adopted by fabric and fixed building services. The TER is calculated countries in the Nordic region. using the SAP 2009 methodology.

The conclusion of their work was 'The Sullivan Report' which recommended a staged improvement in energy standards Element 2007 2011 on a three year cycle, including: Roof 0.20 0.18 – Staged increases in energy standards in order to deliver significant reductions in carbon emissions from new External wall 0.30 0.25 buildings, to achieve low carbon buildings by 2010 and External fabric External very low carbon buildings by 2013 Party wall (thermal bypass) N/A 0.20 – A target of net zero carbon emissions for space heating, hot water, lighting and ventilation within the next 10 Floor 0.25 0.18 years (net zero carbon buildings are buildings where space and water heating, lighting and ventilation are Windows 2.20 1.80 included in any calculations) – Total-life zero carbon buildings by 2030 (total life zero carbon buildings are buildings which are responsible for net zero carbon emissions over their lifetime, including construction, use, maintenance and eventually demolition) – Backstop levels of U-values and airtightness for the building fabric should be improved in 2010 to match those of Nordic countries

Recommendation for new domestic buildings: – The 2010 changes in energy standards should reduce

CO2 emissions by 30% more than the standards introduced in 2007 – The 2013 changes in energy standards should reduce

CO2 emissions by 60% more than the standards introduced in 2007

In response to this report, The Scottish Government published a new version of its 'Technical Standards', which replaced the 2007 edition, and came into force on the 1st October 2010.

Reduced CO2 emissions The 2010 edition represents the first improvement stage since the 2007 edition, with the aim of achieving a 30% improvement in carbon emissions compared with 2007 standards.

Email: [email protected] british-gypsum.com 25 03 Rain penetration

Rainwater will penetrate the outer leaf of a masonry wall in prolonged periods of driving rain. The following should be taken into account to minimise the risk of rain penetration: – Determination of the exposure to wind driven rain – A suitable wall construction and insulation method – Design detailing for the local exposure, taking into account the likely quality of workmanship on site

The most exposed part of the building should be given particular attention when selecting a suitable construction method as this may affect the choice for the whole building.

The following aspects of design can reduce the risk of rain penetration: – Providing cladding (other than render) to the wall – Increasing the clear cavity width or the width of full cavity insulation – Rendering the wall – Designing protective features to keep the wall dry, for example, projecting sills and deep overhanging eaves and verges – Mortar joints. All joints should be fully filled. Where full cavity insulation is proposed, recessed joints should not be used

Suitable wall constructions for use with full cavity insulation External fabric

Minimum insulation thickness (mm)

Exposure Suitable wall construction Built-in Retro-fill (other UF foam category insulation than UF foam)

Very severe Any wall with impervious cladding 50 50 50

Fairfaced masonry with impervious cladding 100 100 N/A to all walls above ground storey

Any wall fully rendered1 75 75 N/A

Fairfaced masonry2 N/A N/A N/A

Severe Any wall with impervious cladding or render2 50 50 50

Fairfaced masonry with impervious cladding 50 75 50 or render2 to all walls above ground storey

Fairfaced masonry 75 75 N/A

Moderate Any wall with impervious cladding or render 50 50 50

Fairfaced masonry with impervious cladding 50 50 50 or render to all walls above ground storey

Fairfaced masonry 50 75 75

Sheltered Any wall with impervious cladding or render 50 50 50

Fairfaced masonry with impervious cladding 50 50 50 or render to all walls above ground storey

Fairfaced masonry 50 50 50

1 Render on an external leaf of clay bricks (F2,S1 or F1,S1 designation bricks to BS EN 771) in severe or very severe exposures is not permitted where the cavity is to be fully filled with insulation. 2 In very severe exposure locations fairfaced masonry with full cavity insulation is not permitted.

NB In Scotland, it is not permissible to fill the full width of the cavity with any thermal insulation at the time of construction.

26 Technical Advice Centre Tel: 0115 945 6123 03

Map showing categories of exposure to wind driven rain External fabric External

Exposure zones Exposure to wind driven rain (litres/m² per spell) Very severe 100 or more Severe 56.5 to less than 100 Moderate 33 to less than 56.5 Sheltered less than 33

Note: Variations to the exposure shown on the map can only be made by site-specific calculations using BS 8104 “Assessing exposure of walls to wind driven rain” and the table above.

Adapted from the map in the BRE report “Thermal Insulation: avoiding risks”.

Map reproduced with the kind permission of the National House Building Council (NHBC).

Email: [email protected] british-gypsum.com 27 03 External fabric

28 Technical Advice Centre Tel: 0115 945 6123 03 System reference for external fabric

Solutions for Structural Detail type Description Page Detail element

Fabric upgrade Brick External wall Solid brick wall 30 01 Around 35% of heat is lost through External wall Brick cavity wall - 31 un-insulated walls. 02 50mm cavity These solutions help create modern energy efficient homes through Block External wall Rendered solid block wall 32 conversion or renovation 03 of existing buildings, or material alterations to existing homes. Stone External wall Solid stone wall 33

04 fabric External

New homes Masonry External wall Full-fill masonry 100mm cavity 34 05 wall incorporating DriLyner BASIC A highly insulated fabric is an essential first step External wall Full-fill masonry 100mm cavity 35 for any low energy home. 06 wall incorporating DriLyner TL It reduces the need for radical design change and use of renewable External wall Full-fill masonry 150mm cavity 38 07 technologies. These wall incorporating DriLyner BASIC solutions help create modern, energy efficient new homes. External wall Full-fill masonry 150mm cavity 39 08 wall incorporating DriLyner TL

Unheated space 140mm block wall adjacent to 40 09 integral garage

Semi-exposed CasoLine MF suspended ceiling to 41 10 area concrete slab

Timber External wall Timber frame wall - 90mm 42 11 timber stud

External wall Timber frame wall - 140mm 43 12 timber stud

Unheated space Timber joist floor above integral 44 13 garage

Steel External wall Steel frame wall - 100mm or 45 14 150mm steel stud

Email: [email protected] british-gypsum.com 29 03 Construction details – Fabric upgrade

Brick walls

Solid brick wall 01 215mm (9") solid brick GypLyner UNIVERSAL wall lining with 25mm cavity Gyproc ThermaLine laminate (see table) External fabric

U-value Wall Board Board lining (W/m2K) thickness thickness mm mm

0.38 303 63 Gyproc ThermaLine PIR

0.36 300 60 Gyproc ThermaLine SUPER

0.31 318 78 Gyproc ThermaLine PIR

0.31 310 70 Gyproc ThermaLine SUPER

0.27 320 80 Gyproc ThermaLine SUPER

0.26 333 93 Gyproc ThermaLine PIR

0.25 330 90 Gyproc ThermaLine SUPER

30 Technical Advice Centre Tel: 0115 945 6123 03

Construction details – Fabric upgrade (cont’d)

Brick walls

Brick cavity wall - 02 50mm cavity 103mm brick 50mm clear cavity 103mm brick 13mm plaster

DriLyner RF wall lining incorporating blobs of Gyproc Sealant

Gyproc ThermaLine laminate (see table) fabric External

U-value Wall Board Board lining (W/m2K) thickness thickness mm mm

0.34 335 63 Gyproc ThermaLine PIR

0.32 332 60 Gyproc ThermaLine SUPER

0.28 350 78 Gyproc ThermaLine PIR

0.28 342 70 Gyproc ThermaLine SUPER

0.25 352 80 Gyproc ThermaLine SUPER

0.24 365 93 Gyproc ThermaLine PIR

0.22 362 90 Gyproc ThermaLine SUPER

Email: [email protected] british-gypsum.com 31 03

Construction details – Fabric upgrade (cont’d)

Block walls

Rendered solid block wall 03 16mm render 190mm block medium density (λ=0.61) 13mm plaster Gyproc ThermaLine laminate (see table) External fabric

U-value Wall Board Board lining (W/m2K) thickness thickness mm mm

0.36 285 63 Gyproc ThermaLine PIR

0.33 282 60 Gyproc ThermaLine SUPER

0.29 300 78 Gyproc ThermaLine PIR

0.29 292 70 Gyproc ThermaLine SUPER

0.26 302 80 Gyproc ThermaLine SUPER

0.25 315 93 Gyproc ThermaLine PIR

0.23 312 90 Gyproc ThermaLine SUPER

32 Technical Advice Centre Tel: 0115 945 6123 03

Construction details – Fabric upgrade (cont’d)

Solid stone walls

Solid stone wall 04 300mm solid stone GypLyner UNIVERSAL wall lining with 25mm cavity and 25mm Isover Acoustic Partition Roll (APR 1200) Gyproc ThermaLine laminate (see table) External fabric External

U-value Wall Board Board lining (W/m2K) thickness thickness mm mm

0.37 385 63 Gyproc ThermaLine PIR

0.35 385 60 Gyproc ThermaLine SUPER

0.30 403 78 Gyproc ThermaLine PIR

0.31 395 70 Gyproc ThermaLine SUPER

0.27 405 80 Gyproc ThermaLine SUPER

0.26 418 93 Gyproc ThermaLine PIR

0.25 415 90 Gyproc ThermaLine SUPER

Email: [email protected] british-gypsum.com 33 03 Construction details – New homes

Masonry walls

Full-fill masonry 100mm cavity 05 wall incorporating DriLyner BASIC 103mm brick 100mm cavity fully filled with Isover insulation (see table) 100mm block (see table)

DriLyner BASIC wall lining incorporating Gyproc Dri-Wall Adhesive dabs

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness External fabric and fixing capability

U-value Wall Insulation Insulation Block Board Board lining (W/m2K) thickness thickness (λ W/mK) thickness mm mm mm

0.29 331 100 Isover CWS 36 0.46 12.5 Gyproc WallBoard

0.28 331 100 Isover CWS 36 0.32 12.5 Gyproc WallBoard

0.27 331 100 Isover CWS 36 0.19 12.5 Gyproc WallBoard

0.26 331 100 Isover CWS 32 0.46 12.5 Gyproc WallBoard

0.26 331 100 Isover CWS 32 0.32 12.5 Gyproc WallBoard

0.26 331 100 Isover CWS 36 0.15 12.5 Gyproc WallBoard

0.25 331 100 Isover CWS 32 0.19 12.5 Gyproc WallBoard

0.25 331 100 Isover CWS 36 0.11 12.5 Gyproc WallBoard

0.24 331 100 Isover CWS 32 0.15 12.5 Gyproc WallBoard

0.23 331 100 Isover CWS 32 0.11 12.5 Gyproc WallBoard

Refer to page 231 for Gyproc Habito finishing options

34 Technical Advice Centre Tel: 0115 945 6123 03

Construction details – New homes (cont’d)

Masonry walls

Full-fill masonry 100mm cavity 06 wall incorporating DriLyner TL 103mm brick 100mm cavity fully filled with 100mm Isover CWS 32 100mm block (see table)

DriLyner TL wall lining incorporating Gyproc Dri-Wall Adhesive dabs (see table) External fabric External

U-value Wall Block Board Board lining (W/m2K) thickness (λ W/mK) thickness mm mm

0.24 340 0.32 22 Gyproc ThermaLine BASIC

0.23 340 0.19 22 Gyproc ThermaLine BASIC

0.23 345 0.32 27 Gyproc ThermaLine PLUS

0.22 340 0.11 22 Gyproc ThermaLine BASIC

0.22 345 0.11 27 Gyproc ThermaLine PLUS

0.22 353 0.32 35 Gyproc ThermaLine PLUS

0.21 348 0.11 30 Gyproc ThermaLine BASIC

0.21 353 0.19 35 Gyproc ThermaLine PLUS

0.20 353 0.11 35 Gyproc ThermaLine PLUS

0.20 356 0.32 38 Gyproc ThermaLine PIR

0.19 356 0.19 38 Gyproc ThermaLine PIR

0.18 356 0.11 38 Gyproc ThermaLine PIR

0.18 371 0.32 53 Gyproc ThermaLine PIR

0.17 368 0.19 50 Gyproc ThermaLine SUPER

0.16 368 0.11 50 Gyproc ThermaLine SUPER

0.16 371 0.11 53 Gyproc ThermaLine PIR

Email: [email protected] british-gypsum.com 35 03

Construction details – New homes (cont’d)

Gyproc Soundcoat Plus

Within Approved Document Parts L1A and L2A an upper The known main air leakage paths are: 3 2 limit on air permeability of 10m /(hr. m ) is required. In – Cracks, gaps and joints in the structure practice, most designs will need to be significantly better than this. – Timber floors – Joist penetrations of external walls Improving the building’s airtightness is crucial to improving – Internal stud walls the energy performance of the building. – Windows and doors (and their surrounds) Although air leakage can occur directly, most leaks (circa – Loft hatches 75%) occur indirectly. Air leakage paths are often very – Skirting boards complicated, therefore air leakage can be difficult to trace and seal effectively. – Chimneys and flues – Service entries, ducts and electrical components – Areas of un-plastered wall – Plasterboard drylining External fabric

Parging of masonry walls, prior to drylining, is a commonly used method of improving the acoustic and thermal performance by minimising air leakage through cracks, unfilled joints and block porosity. A building that is well constructed, with a good

standard of airtightness, will benefit from improved energy performance, lower heating costs, reduced CO2 emissions and greater comfort for its occupants.

Gyproc Soundcoat Plus optimises the thermal performance of external and separating walls by limiting air leakage and the resultant heat loss. It can be applied to aircrete blocks, as well as aggregate.

36 Technical Advice Centre Tel: 0115 945 6123 03

Construction details – New homes (cont’d)

Gyproc Soundcoat Plus

Increasing the sustainability of new homes and improving occupier comfort

– The external envelope has the most significant long-term effect on reducing the energy consumption of a dwelling – The use of Gyproc Soundcoat Plus on all external and separating walls provides an effective airtight seal, reducing energy consumption – As the performance requirements of Part L become more onerous, using Gyproc Soundcoat Plus to reduce heat loss can reduce the need for other more costly energy efficiency measures External fabric External – High levels of insulation are not sufficient on their own to limit heat loss. Gyproc Soundcoat Plus is a cost effective way of providing an air barrier to masonry walls

Application

– All surfaces should be reasonably dry and protected from the weather – Mix by hand or mechanical whisk using only clean water and clean mixing equipment. Avoid excessive mechanical mixing – Apply a continuous coat of at least 6mm to the entire surface, ensuring all cracked or unfilled joints are covered – There is no need to trowel smooth – Setting time is approximately 60 - 75 Gyproc Dri-Wall Adhesive minutes, depending on background suction Gyproc Dri-Wall Adhesive is a general purpose and ambient temperature gypsum-based adhesive. It is used in the British Gypsum – One bag covers approximately 5m2 at 6mm DriLyner wall lining solutions to bond boards directly to overall thickness the wall (high, medium or low suction backgrounds), and 2 – Gyproc plasterboard should be fixed using comes packed in 25kg bags, each with a coverage of 6-7m . Gyproc Dri-Wall Adhesive after Gyproc Soundcoat Plus The DriLyner BASIC system uses Gyproc WallBoard and the has set – allow 120 minutes minimum setting time DriLyner TL system uses Gyproc ThermaLine laminates. – Do not use this product as an adhesive to fix In order to improve airtightness when using a plasterboard plasterboards drylining internal lining, British Gypsum recommends that continuous ribbons of adhesive are used to seal the drylining at the perimeter of external walls, openings and services on external walls.

For DriLyner BASIC, SI and TL systems, adhesive dabs are applied in three or four rows (as appropriate) to receive the first board, together with intermediate dabs at ceiling level and a continuous band of adhesive at skirting level. Boards are positioned and supported until the adhesive sets.

Email: [email protected] british-gypsum.com 37 03

Construction details – New homes (cont’d)

Masonry walls

Full-fill masonry 150mm cavity 07 wall incorporating DriLyner BASIC 103mm brick 150mm cavity fully filled with Isover insulation (see table) 100mm block (see table)

DriLyner BASIC wall lining incorporating Gyproc Dri-Wall Adhesive dabs

External fabric Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

U-value Wall Insulation Insulation Block Board Board lining (W/m2K) thickness thickness (λ W/mK) thickness mm mm mm

0.22 381 150 Isover CWS 36 0.46 12.5 Gyproc WallBoard

0.21 381 150 Isover CWS 36 0.19 12.5 Gyproc WallBoard

0.20 381 150 Isover CWS 32 0.32 12.5 Gyproc WallBoard

0.20 381 150 Isover CWS 36 0.11 12.5 Gyproc WallBoard

0.19 381 150 Isover CWS 32 0.15 12.5 Gyproc WallBoard

0.18 381 150 Isover CWS 32 0.11 12.5 Gyproc WallBoard

Refer to page 231 for Gyproc Habito finishing options

38 Technical Advice Centre Tel: 0115 945 6123 03

Construction details – New homes (cont’d)

Masonry walls

Full-fill masonry 150mm cavity 08 wall incorporating DriLyner TL 103mm brick 150mm cavity fully filled with 150mm Isover CWS 32 (bridged by thermal efficient ties 100mm block (see table)

DriLyner TL wall lining incorporating Gyproc Dri-Wall Adhesive dabs (see table) fabric External

U-value Wall Block Board Board lining (W/m2K) thickness (λ W/mK) thickness mm mm

0.19 390 0.32 22 Gyproc ThermaLine BASIC

0.18 390 0.19 22 Gyproc ThermaLine BASIC

0.17 390 0.11 22 Gyproc ThermaLine BASIC

0.16 408 0.11 40 Gyproc ThermaLine BASIC

0.18 395 0.32 27 Gyproc ThermaLine PLUS

0.17 403 0.19 35 Gyproc ThermaLine PLUS

0.16 403 0.11 35 Gyproc ThermaLine PLUS

0.16 406 0.19 38 Gyproc ThermaLine PIR

0.15 406 0.11 38 Gyproc ThermaLine PIR

0.14 418 0.19 50 Gyproc ThermaLine SUPER

0.13 418 0.11 50 Gyproc ThermaLine SUPER

Email: [email protected] british-gypsum.com 39 03

Construction details – New homes (cont’d)

Masonry walls

140mm block wall adjacent 09 to integral garage 140mm block

DriLyner TL wall lining incorporating Gyproc Dri-Wall Adhesive dabs (see table)

2 Ru of 0.25m K/W External fabric

U-value U-value Block Board Board lining (W/m2K) (W/m2K) (λ W/mK) thickness mm

0.37 208 0.46 53 Gyproc ThermaLine PIR

0.36 208 0.32 53 Gyproc ThermaLine PIR

0.36 205 0.46 50 Gyproc ThermaLine SUPER

0.34 205 0.32 50 Gyproc ThermaLine SUPER

0.33 208 0.19 53 Gyproc ThermaLine PIR

0.32 218 0.46 63 Gyproc ThermaLine PIR

0.32 205 0.19 50 Gyproc ThermaLine SUPER

0.31 218 0.32 63 Gyproc ThermaLine PIR

0.30 205 0.11 53 Gyproc ThermaLine PIR

0.30 215 0.46 60 Gyproc ThermaLine SUPER

0.29 218 0.19 63 Gyproc ThermaLine PIR

0.29 215 0.32 60 Gyproc ThermaLine SUPER

0.28 205 0.11 50 Gyproc ThermaLine SUPER

0.27 215 0.19 60 Gyproc ThermaLine SUPER

0.26 218 0.11 63 Gyproc ThermaLine PIR

0.24 215 0.11 60 Gyproc ThermaLine SUPER

40 Technical Advice Centre Tel: 0115 945 6123 03

Construction details – New homes (cont’d)

Masonry soffit

CasoLine MF suspended 10 ceiling to concrete slab 200mm concrete slab

CasoLine MF suspended ceiling Isover Spacesaver insulation in ceiling cavity (see table)

10mm Glasroc F MULTIBOARD or 10mm Glasroc F FIRECASE External fabric External

U-value Floor Insulation Insulation (W/m2K) depth thickness mm

0.32 383 100 Isover Spacesaver Plus

0.24 433 150 Isover Spacesaver Plus

0.21 453 170 Isover Spacesaver Plus

0.18 483 200 Isover Spacesaver Plus

Email: [email protected] british-gypsum.com 41 03

Construction details – New homes (cont’d)

Timber frame walls

Timber frame wall - 90mm 11 timber stud 103mm brick 50mm clear cavity Breather membrane 9mm OSB sheathing board 90mm timber stud and 90mm Isover Frame Batt 32 insulation Vapour control layer (as required)

Gyproc ThermaLine PIR laminate (see table) External fabric

U-value Wall Board Board lining (W/m2K) thickness thickness mm mm

0.26 290 38 Gyproc ThermaLine PIR

0.23 305 53 Gyproc ThermaLine PIR

0.21 315 63 Gyproc ThermaLine PIR

0.19 330 78 Gyproc ThermaLine PIR

0.17 345 93 Gyproc ThermaLine PIR

42 Technical Advice Centre Tel: 0115 945 6123 03

Construction details – New homes (cont’d)

Timber frame walls

Timber frame wall - 140mm 12 timber stud 103mm brick 50mm clear cavity Breather membrane 9mm OSB sheathing board 140mm timber stud and 140mm Isover Frame Batt 32 insulation

Vapour control layer (as required) fabric External 12.5mm Gyproc WallBoard or Gyproc ThermaLine laminate (see table)

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

U-value Wall Board Board lining (W/m2K) thickness thickness mm mm

0.27 315 12.5 Gyproc WallBoard

0.21 350 48 Gyproc ThermaLine PLUS

0.20 340 38 Gyproc ThermaLine PIR

0.18 355 53 Gyproc ThermaLine PIR

0.17 365 63 Gyproc ThermaLine PIR

Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 43 03

Construction details – New homes (cont’d)

Timber joist floors

Timber joist floor above 13 integral garage 22mm t&g flooring on 170mm x 38mm timber joists at 600mm centres 170mm Isover Spacesaver Plus insulation 12.5mm Gyproc FireLine and Gyproc ThermaLine laminate (see table)

2 Ru of 0.25m K/W External fabric

U-value Total Board Board lining (W/m2K) thickness thickness mm mm

0.23 230 12.5 Gyproc FireLine

0.21 252 22 Gyproc ThermaLine BASIC

0.20 260 30 Gyproc ThermaLine BASIC

0.20 257 27 Gyproc ThermaLine PLUS

0.19 270 40 Gyproc ThermaLine BASIC

0.19 265 35 Gyproc ThermaLine PLUS

0.18 278 48 Gyproc ThermaLine PLUS

0.18 268 38 Gyproc ThermaLine PIR

0.17 283 53 Gyproc ThermaLine PIR

0.16 293 63 Gyproc ThermaLine PIR

0.16 280 50 Gyproc ThermaLine SUPER

0.15 290 60 Gyproc ThermaLine SUPER

44 Technical Advice Centre Tel: 0115 945 6123 03

Construction details – New homes (cont’d)

Steel stud walls

Steel frame wall - 100mm or 14 150mm steel stud 103mm brick 50mm clear cavity 50mm Celotex Insulation Steel studs and Isover Steel Frame In-Fill Batts insulation (see table) Vapour control layer (as required)

12.5mm Gyproc plasterboard fabric External

U-value Stud size Wall Insulation Insulation between studs (W/m2K) mm thickness thickness mm mm

0.22 100 316 100 Isover Steel Frame In-Fill Batts

0.19 150 366 2 x 75 Isover Steel Frame In-Fill Batts

Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 45 03 Room-in-the-roof

Homebuyers demand greater flexibility from new homes. Changes of lifestyle, including more people working from home, extended families, and more recreational pursuits, all demand additional living space.

Providing extra space from the outset has huge benefits all round, for both the homeowner and housebuilder: – The extra cost of third floor living space, which buyers are prepared to pay for, is an investment that greatly exceeds the cost of production – Increased living space without increasing the footprint achieves an ideal scenario; reducing the build cost per square metre – Flexibility of living space is achieved without having to resort to expensive build-on costs, with a subsequent loss of land

National Building Regulations A quarter of all heat lost from an average UK dwelling is attributed to the roof, therefore providing a well-insulated and airtight roof construction will contribute to the overall energy efficiency performance of the dwelling.

The roof fabric, including gable walls in semi or detached homes, must be designed to meet national Building Regulations Approved Document Part L1A (or Domestic External fabric Technical Handbook Section 6 in Scotland).

Internal walls between a bathroom / WC and a habitable room, or between a bedroom and any other room within the roof space must meet national Building Regulations

Approved Document E, clause E2, requirement of Rw 40 dB. Internal walls which include a door are exempt from this requirement.

The top floor has to be designed to meet the current national Building Regulations Approved Document B requirements, and the national Building Regulations Approved Document E requirements. The fire resistance requirement for the floor varies depending upon whether the room-in-the-roof is the third (30 minutes) or fourth (60 minutes) storey of a new-build home (please refer national Building Regulations Approved Document B1 table A2).

46 Technical Advice Centre Tel: 0115 945 6123 03 System reference for room-in-the-roof

Solutions for Detail type Description Page Detail

New homes Room-in-the-roof Tiled or slated roof on tiling battens on 48 15 – roof breather membrane

Room-in-the-roof Timber studs at 600mm centres 49 16 – knee wall External fabric External

Email: [email protected] british-gypsum.com 47 03 Construction details – New homes

Room-in-the-roof - roof 15 Tiled or slated roof on tiling battens on breather membrane 48mm (wide) softwood rafters at 600mm centres Isover insulation (see table) Timber fraction 9%

Gyproc WallBoard DUPLEX or Gyproc ThermaLine laminate fixed to the underside of the rafters (see table)

U-value Rafter Insulation Insulation Board Board lining (W/m2K) Depth mm thickness thickness mm mm External fabric

0.27 140 140 Isover Frame Batt 32 12.5 Gyproc WallBoard DUPLEX

0.26 140 140 Isover Frame Batt 43 40 Gyproc ThermaLine BASIC

0.25 140 140 Isover Frame Batt 43 40 Gyproc ThermaLine PLUS

0.24 140 140 Isover Frame Batt 43 48 Gyproc ThermaLine PLUS

0.22 140 140 Isover Frame Batt 32 40 Gyproc ThermaLine BASIC

0.21 140 140 Isover Frame Batt 32 40 Gyproc ThermaLine PLUS

0.20 200 2 x 100 Isover Frame Batt 35 12.5 Gyproc WallBoard DUPLEX

0.20 140 140 Isover Frame Batt 32 38 Gyproc ThermaLine PIR

0.18 200 2 x 100 Isover Frame Batt 35 40 Gyproc ThermaLine BASIC

0.18 140 140 Isover Frame Batt 32 53 Gyproc ThermaLine PIR

0.18 140 140 Isover Frame Batt 32 50 Gyproc ThermaLine SUPER

0.17 140 140 Isover Frame Batt 32 60 Gyproc ThermaLine SUPER

0.17 200 2 x 100 Isover Frame Batt 35 40 Gyproc ThermaLine PLUS

0.17 140 140 Isover Frame Batt 32 63 Gyproc ThermaLine PIR

0.16 200 2 x 100 Isover Frame Batt 35 38 Gyproc ThermaLine PIR

0.15 200 2 x 100 Isover Frame Batt 35 53 Gyproc ThermaLine PIR

0.15 140 140 Isover Frame Batt 32 70 Gyproc ThermaLine SUPER

0.15 200 2 x 100 Isover Frame Batt 35 50 Gyproc ThermaLine SUPER

0.14 200 2 x 100 Isover Frame Batt 35 63 Gyproc ThermaLine PIR

0.14 200 2 x 100 Isover Frame Batt 35 60 Gyproc ThermaLine SUPER

The Robust Details route to compliance calls for a minimum of 100mm mineral wool to be laid between the rafters to reduce flanking sound transmission in room-in-the-roof constructions with masonry separating walls. British Gypsum recommends the use of 100mm Isover Frame Batt 35 for this application.

48 Technical Advice Centre Tel: 0115 945 6123 03

Construction details – New homes (cont’d)

Room-in-the-roof - knee wall 16 Timber studs at 600mm centres forming the wall lining to the roof space Isover insulation between studs (see table) Timber fraction 15% Gyproc ThermaLine laminate fixed to the face of the studs (see table) External fabric External

U-value Rafter Insulation Insulation Board Board lining (W/m2K) Depth mm thickness thickness mm mm

0.25 140 140 Isover Frame Batt 32 22 Gyproc ThermaLine BASIC

0.24 140 140 Isover Frame Batt 32 30 Gyproc ThermaLine BASIC

0.24 140 140 Isover Frame Batt 32 27 Gyproc ThermaLine PLUS

0.24 140 140 Isover Frame Batt 43 38 Gyproc ThermaLine PIR

0.24 90 90 Isover Frame Batt 43 63 Gyproc ThermaLine PIR

0.23 140 140 Isover Frame Batt 32 40 Gyproc ThermaLine BASIC

0.23 140 140 Isover Frame Batt 32 35 Gyproc ThermaLine PLUS

0.22 140 140 Isover Frame Batt 32 40 Gyproc ThermaLine PLUS

0.22 90 90 Isover Frame Batt 32 50 Gyproc ThermaLine SUPER

0.21 140 140 Isover Frame Batt 32 48 Gyproc ThermaLine PLUS

0.21 140 140 Isover Frame Batt 32 38 Gyproc ThermaLine PIR

0.21 140 140 Isover Frame Batt 43 53 Gyproc ThermaLine PIR

0.21 90 90 Isover Frame Batt 32 63 Gyproc ThermaLine PIR

0.20 90 90 Isover Frame Batt 32 60 Gyproc ThermaLine SUPER

0.19 140 140 Isover Frame Batt 43 63 Gyproc ThermaLine PIR

0.19 90 90 Isover Frame Batt 32 70 Gyproc ThermaLine SUPER

0.18 140 140 Isover Frame Batt 32 53 Gyproc ThermaLine PIR

0.18 140 140 Isover Frame Batt 32 50 Gyproc ThermaLine SUPER

0.17 140 140 Isover Frame Batt 32 63 Gyproc ThermaLine PIR

0.17 140 140 Isover Frame Batt 32 60 Gyproc ThermaLine SUPER

0.15 140 140 Isover Frame Batt 32 70 Gyproc ThermaLine SUPER

Email: [email protected] british-gypsum.com 49 50 Technical Advice Centre Tel: 0115 945 6123

04 Separating walls 51

O4 Separating walls living safe and comfortable quiet, Creating homes. adjoining between environments 04 Separating walls

Discover more on legislation throughout England, Wales and Scotland in this section, and how our systems can help provide solutions for separating walls to achieve regulatory and enhanced acoustic performance levels. Find out about the performance benefits of plaster and use our handy Thistle plaster selector guide to choose the right solution for your masonry background. Separating walls

52 04 Legislation and guidance

England and Wales - national Building Regulations Approved Document E

Approved Document E (ADE) gives guidance on how to provide reasonable standards of sound insulation in dwellings and other residential buildings. It covers both new-build and refurbishment or conversion, and includes minimum standards of performance for separating walls. The standards below have applied for all new-build homes and purpose-built rooms for residential purposes since July 2004.

Where applicable Minimum airborne sound insulation

(site test result) DnTw + Ctr

Separating walls between new homes 45 dB

Separating walls between purpose-built rooms for residential purposes 43 dB

Separating walls between rooms created by a change of use or conversion 43 dB

NB Following the devolution of powers in 31st December 2011, it is possible that separate Approved Documents will be published for Wales. Until such time, current guidance continues to apply.

Complying with the regulations In England and Wales, housebuilders can follow one of two routes to demonstrate compliance for new-build houses and apartments: walls Separating – Using ‘Robust Detail’ constructions – Using manufacturers’ proprietary systems or ADE ‘Guidance Constructions’ and verifying by Pre-Completion Testing

Robust Detail constructions Robust Detail (RD) constructions can be used in new houses and apartments as an alternative to Pre-Completion Testing. British Gypsum versions of RD constructions can be found within the construction details later in this section. If you are following the RD route, you must register each plot, with the details you intend to use, and pay a fee. You will then be given a registration certificate to hand to your building control authority before work starts.

If you are building to either the Code for Sustainable Homes, or EcoHomes, RDs may entitle you to additional credits under the Health and Wellbeing category – check the Robust Details Handbook for the most up-to-date details.

Email: [email protected] british-gypsum.com 53 04 Separating walls

54 Technical Advice Centre Tel: 0115 945 6123 04

Legislation and guidance (cont’d)

Pre-Completion Testing Where Robust Details are not used, manufacturer’s proprietary systems, or Approved Document E Guidance Constructions can be used and verified by Pre-Completion Testing. This is the only means of compliance allowed for purpose-built rooms for residential purposes and conversion or refurbishment projects.

Pre-Completion Testing ensures the required performance of separating wall and floor constructions is being achieved on-site, prior to completion. It is not required for internal space division within dwellings – walls between living spaces in the same home, corridors, stairwells, or hallways.

If this route is chosen: – Separating constructions in 10% of all dwellings, or construction types, must be tested – Tests should be carried out once the separating construction is complete, except for decoration

Test results only apply to the particular constructions tested, but are indicative of the performance of others of the same type, in the same development.

Once likely completion times are known, Building Control will ask for one set of tests on the first house, flat or residential room scheduled for completion in each group or sub-group, regardless of development size. If the development is only a single home, it must be tested.

Failure in any one of the individual airborne or impact sound tests will result in failure of the set of tests. Appropriate remedial treatment must then be carried out to the satisfaction of Building Control, and will result in an increase in testing rates until they are satisfied that the problem has been solved. Separating walls Separating

Junctions Developers should ensure that all the guidance contained within this publication, and supporting regulations and legislation, are followed and should pay particular care with flanking construction and junctioning details. Poor detailing may prevent full design performance from being achieved on-site. Take care at junctions between the separating floor and external walls, other separating structures, penetrations and door openings. Pre-Completion Testing exposes poor flanking detail and inadequate separating wall specification. Good detailing and specification is essential to provide a margin of safety on-site.

For guidance see page 135 Flanking details

Where additional performance is needed either as an additional margin of safety or for higher quality developments, see our Standard plus and Superior solutions on pages 77 to 103.

Email: [email protected] british-gypsum.com 55 04

Legislation and guidance (cont’d)

Scotland – Domestic Technical Handbook Section 5: Noise

A new version of the Domestic Technical Handbook Section 5 was published in October 2010, which increased the standards of sound insulation for separating walls in homes.

This was the first major review of standards for more than 20 years. Its aim is to limit sound transmission from differently occupied parts of a building, and from attached buildings, to a level that will not threaten the health of occupants.

The standards below now apply for all separating wall constructions in new build or converted homes and ‘traditional buildings’*.

Where applicable Minimum airborne sound insulation

(site test result) DnTw

Separating walls between new homes, purpose-built rooms for residential purposes and 56 dB conversions (not including traditional buildings*)

Separating walls between homes or rooms created by a change of use or conversion 53 dB (traditional buildings*)

*Traditional buildings - generally buildings or parts of buildings built pre-1919 using construction techniques of the day, with permeable components that help dissipate moisture from the fabric.

Complying with the regulations Since January 2012, housebuilders and developers in Scotland can use one of three routes to comply with Section 5 performance standards for new-build houses and apartments. The Post-Completion Testing route, however, Separating walls remains the only means of compliance for purpose-built rooms for residential purposes and conversions: – Using ‘Robust Detail’ constructions – Using ‘Example Constructions’ and verifying by Post-Completion Testing – Using ‘Other Constructions’ and verifying by Post-Completion Testing

Robust Detail constructions Since 2012, Robust Detail (RD) constructions can be used in new houses and apartments as an alternative to Post-Completion Testing in Scotland. British Gypsum versions of RD constructions can be found within the construction details later in this section. If you are following the RD route, you must register each plot, with details of the RD(s) you intend to use, and pay a fee. You will then be given a registration certificate to hand to your building control authority before work starts.

56 Technical Advice Centre Tel: 0115 945 6123 04

Legislation and guidance (cont’d)

‘Example Constructions’ These are constructions developed to repeatedly achieve required design performance levels, if built right with correctly designed flanking details. Use of these constructions does not guarantee regulatory performance levels will be achieved, and the onus is therefore on the housebuilder to demonstrate compliance by Post-Completion Testing on site (see below).

‘Other Constructions’ These include manufacturers’ proprietary solutions and new, or innovative, constructions not considered to be ‘Example Constructions’. Again, the onus is on the housebuilder to demonstrate compliance by Post-Completion Testing.

‘Post-Completion Testing’ Post-Completion Testing is carried out when the building is complete, with doors, access hatches and windows fitted.

To achieve the required approval, homes should be tested as below:

Type of construction Number of attached Number of tests for separating walls dwellings (flats or maisonettes)

New-build using 2-20 2 ‘Example Constructions’ 21-40 3

Over 40 1 extra for every 20 flats or maisonettes (or part thereof) Separating walls Separating New-build using 2-10 2 ‘Other Constructions’ 11-20 3

21-30 4

Over 30 1 extra for every 10 flats or maisonettes (or part thereof)

If a test fails due to the construction of the separating floor or associated flanking elements, other untested rooms may be affected. This will result in additional testing requirements, over and above those in the table above. It may be prudent to seek specialist advice to identify and remedy any problems.

Junctions Developers should ensure that all the guidance contained within this publication, and supporting regulations and legislation, are followed and should pay particular care with flanking construction and junctioning details. Poor detailing may prevent full design performance from being achieved on-site. Take care at junctions between the separating floor and external walls, other separating structures, penetrations and door openings. Post-Completion Testing exposes poor flanking detail and inadequate separating wall specification. Good detailing and specification is essential to provide a margin of safety on-site.

For guidance see page 135 Flanking details

Where additional performance is needed either as an additional margin of safety or for higher quality developments, see our Standard plus and Superior solutions on pages 77 to 103.

Email: [email protected] british-gypsum.com 57 04 System reference for separating walls

Solutions Build method Detail / Wall type Category Description Page Detail

Approved Document E Masonry Proprietary British Gypsum DriLyner SI masonry wall lining 64 17 (England and Wales) and Approved System Technical Handbook Section Proprietary England and Wales GypLyner UNIVERSAL masonry wall lining 64 18 5 (Scotland) stipulate a 1 minimum level of sound Timber Proprietary British Gypsum Timber stud and Gypframe RB1 Resilient Bar 65 19 insulation which must be Approved System Rooms for achieved on-site. These England and Wales separating wall constructions residential have been shown to have Steel Proprietary British Gypsum GypWall CLASSIC 66 20 purposes and the capability of meeting Approved System the minimum standard for conversions Proprietary England and Wales GypWall QUIET SF 66 21 only purpose-built rooms for residential purposes and Proprietary British Gypsum GypWall QUIET IWL 67 conversion projects. 22 Approved System England, Wales and Scotland

The following ‘Robust Detail’, Masonry E-WM-1 Robust Detail Dense aggregate cavity masonry wall (plastered) 68 23 ‘Guidance’ and ‘Example’ England and Wales constructions are capable E-WM-1 Dense aggregate cavity masonry wall (plaster and insulation) 68 24 of meeting the minimum 2 standards laid down in E-WM-9 Dense aggregate solid masonry wall (parged and drylined) 69 25 Approved Document E Standard (England and Wales) and E-WM-10 Aircrete thin joint cavity masonry wall (parged and drylined) 69 26 Technical Handbook Section performance 5 (Scotland) for separating E-WM-12 Plasmor Aglite Ultima cavity masonry wall (parged and drylined) 70 walls in new-build houses 27

Separating walls and apartments, purpose Wall type 1 Guidance Construction Solid masonry wall (plastered) 70 built rooms for residential 28 England and Wales purposes, and conversion projects. Robust Details, Wall type 2.1 Dense aggregate cavity masonry wall (plastered) 71 29 however, offer proven sound performance, and avoid the Wall type 2.2 Lightweight aggregate cavity masonry wall (plastered) 71 30 need for testing on-site. Wall type 3.1 Solid masonry wall with GypLyner IWL wall linings 72 31

Proprietary British Gypsum Lightweight cavity masonry wall (plastered) 72 32 Approved System Proprietary England, Wales Dense aggregate cavity masonry wall (parged and drylined) 73 33 and Scotland Proprietary Lightweight aggregate cavity masonry wall (parged and drylined) 73 34

Steel E-WS-1 Robust Detail Steel frame 74 35 England and Wales E-WS-2 GypWall QUIET IWL 74 36

Proprietary British Gypsum GypWall CLASSIC with Gypframe AcouStuds 75 37 Approved System Proprietary England, Wales GypWall QUIET 75 38 and Scotland Proprietary GypWall QUIET SF 76 39

Proprietary GypWall QUIET SF – with additional service zone created with GypLyner UNIVERSAL 76 40

58 Technical Advice Centre Tel: 0115 945 6123 04

Solutions Build method Detail / Wall type Category Description Page Detail

Approved Document E Masonry Proprietary British Gypsum DriLyner SI masonry wall lining 64 17 (England and Wales) and Approved System Technical Handbook Section Proprietary England and Wales GypLyner UNIVERSAL masonry wall lining 64 18 5 (Scotland) stipulate a minimum level of sound Timber Proprietary British Gypsum Timber stud and Gypframe RB1 Resilient Bar 65 19 insulation which must be Approved System Rooms for achieved on-site. These England and Wales separating wall constructions residential have been shown to have Steel Proprietary British Gypsum GypWall CLASSIC 66 20 purposes and the capability of meeting Approved System the minimum standard for conversions Proprietary England and Wales GypWall QUIET SF 66 21 only purpose-built rooms for residential purposes and Proprietary British Gypsum GypWall QUIET IWL 67 conversion projects. 22 Approved System England, Wales and Scotland

The following ‘Robust Detail’, Masonry E-WM-1 Robust Detail Dense aggregate cavity masonry wall (plastered) 68 23 ‘Guidance’ and ‘Example’ England and Wales constructions are capable E-WM-1 Dense aggregate cavity masonry wall (plaster and insulation) 68 24 of meeting the minimum standards laid down in E-WM-9 Dense aggregate solid masonry wall (parged and drylined) 69

25 walls Separating Approved Document E Standard (England and Wales) and E-WM-10 Aircrete thin joint cavity masonry wall (parged and drylined) 69 26 Technical Handbook Section performance 5 (Scotland) for separating E-WM-12 Plasmor Aglite Ultima cavity masonry wall (parged and drylined) 70 walls in new-build houses 27 and apartments, purpose Wall type 1 Guidance Construction Solid masonry wall (plastered) 70 built rooms for residential 28 England and Wales purposes, and conversion projects. Robust Details, Wall type 2.1 Dense aggregate cavity masonry wall (plastered) 71 29 however, offer proven sound performance, and avoid the Wall type 2.2 Lightweight aggregate cavity masonry wall (plastered) 71 30 need for testing on-site. Wall type 3.1 Solid masonry wall with GypLyner IWL wall linings 72 31

Proprietary British Gypsum Lightweight cavity masonry wall (plastered) 72 32 Approved System Proprietary England, Wales Dense aggregate cavity masonry wall (parged and drylined) 73 33 and Scotland Proprietary Lightweight aggregate cavity masonry wall (parged and drylined) 73 34

Steel E-WS-1 Robust Detail Steel frame 74 35 England and Wales E-WS-2 GypWall QUIET IWL 74 36

Proprietary British Gypsum GypWall CLASSIC with Gypframe AcouStuds 75 37 Approved System Proprietary England, Wales GypWall QUIET 75 38 and Scotland Proprietary GypWall QUIET SF 76 39

Proprietary GypWall QUIET SF – with additional service zone created with GypLyner UNIVERSAL 76 40

Email: [email protected] british-gypsum.com 59 04

System reference for separating walls (cont’d)

Solutions Build method Detail / Wall type Category Description Page Detail

Standard plus solutions Masonry E-WM-2 Robust Detail Lightweight aggregate cavity masonry wall (plastered) 77 41 provide performance over England and Wales and above the minimum E-WM-2 Lightweight aggregate cavity masonry wall (plaster and insulation) 77 42 requirement. They allow a 3 margin of safety to reduce E-WM-3 Dense aggregate cavity masonry wall (parged and drylined) 84 43 the chance of site test failure E-WM-4 Lightweight aggregate cavity masonry wall (parged and drylined) 84 Standard due to local installation or 44 detailing issues. plus E-WM-5 Besblock ‘Star Performer’ cavity masonry wall (parged and drylined) 85 45 performance E-WM-6 Aircrete cavity masonry wall (parged and drylined) 85 46 E-WM-8 Lightweight aggregate cavity masonry wall (drylined) 86 47 E-WM-15 Aircrete cavity masonry wall (drylined) 86 48 E-WM-26 Besblock ‘Star Performer’ cavity masonry wall (drylined) 87 49 Timber E-WT-2 and Robust Detail Timber frame with sheathing board 88 50 V-WT-2 England, Wales and Scotland E-WT-3 and ElecoFrame prefabricated panels 89 51 V-WT-3

Steel Proprietary British Gypsum GypWall CLASSIC with Gypframe AcouStuds 90 52 Approved System Proprietary England and Wales GypWall QUIET 91 53

Proprietary British Gypsum GypWall QUIET IWL 92 54 Separating walls Approved System England, Wales and Scotland

Superior solutions have Masonry E-WM-11 and Robust Detail Lightweight aggregate cavity masonry wall (parged and drylined) 93 55 the potential to exceed V-WM-11 England, Wales and Scotland the regulatory acoustic performance requirement E-WM-13 Robust Detail Aircrete cavity masonry wall (parged and drylined) 93 56 4 by 5 dB or more. They reduce England and Wales the chances of site test E-WM-14 and Robust Detail Lightweight aggregate cavity masonry wall (drylined) 94 failure and are the perfect 57 Superior V-WM-14 England, Wales and Scotland choice for high performing performance or prestige developments. E-WM-16 Robust Detail Dense aggregate cavity masonry wall (parged and drylined) 94 58 England and Wales E-WM-17 Lightweight aggregate cavity masonry wall (drylined) 95 59 E-WM-18 Dense aggregate cavity masonry wall (plastered) 95 60 E-WM-20 and Robust Detail Lightweight aggregate cavity masonry wall (drylined) 96 61 V-WM-20 England, Wales and Scotland E-WM-21 Lightweight aggregate cavity masonry wall (plastered) 96 62 E-WM-24 Robust Detail Aircrete cavity masonry wall (drylined) 97 63 England and Wales E-WM-25 Porotherm cavity masonry wall (drylined) 97 64

Proprietary British Gypsum Solid masonry wall with GypLyner UNIVERSAL and plaster wall linings 98 65 Approved System England, Wales and Scotland

60 Technical Advice Centre Tel: 0115 945 6123 04

Solutions Build method Detail / Wall type Category Description Page Detail

Standard plus solutions Masonry E-WM-2 Robust Detail Lightweight aggregate cavity masonry wall (plastered) 77 41 provide performance over England and Wales and above the minimum E-WM-2 Lightweight aggregate cavity masonry wall (plaster and insulation) 77 42 requirement. They allow a margin of safety to reduce E-WM-3 Dense aggregate cavity masonry wall (parged and drylined) 84 43 the chance of site test failure E-WM-4 Lightweight aggregate cavity masonry wall (parged and drylined) 84 Standard due to local installation or 44 detailing issues. plus E-WM-5 Besblock ‘Star Performer’ cavity masonry wall (parged and drylined) 85 45 performance E-WM-6 Aircrete cavity masonry wall (parged and drylined) 85 46 E-WM-8 Lightweight aggregate cavity masonry wall (drylined) 86 47 E-WM-15 Aircrete cavity masonry wall (drylined) 86 48 E-WM-26 Besblock ‘Star Performer’ cavity masonry wall (drylined) 87 49 Timber E-WT-2 and Robust Detail Timber frame with sheathing board 88 50 V-WT-2 England, Wales and Scotland E-WT-3 and ElecoFrame prefabricated panels 89 51 V-WT-3 Separating walls Separating Steel Proprietary British Gypsum GypWall CLASSIC with Gypframe AcouStuds 90 52 Approved System Proprietary England and Wales GypWall QUIET 91 53

Proprietary British Gypsum GypWall QUIET IWL 92 54 Approved System England, Wales and Scotland

Superior solutions have Masonry E-WM-11 and Robust Detail Lightweight aggregate cavity masonry wall (parged and drylined) 93 55 the potential to exceed V-WM-11 England, Wales and Scotland the regulatory acoustic performance requirement E-WM-13 Robust Detail Aircrete cavity masonry wall (parged and drylined) 93 56 by 5 dB or more. They reduce England and Wales the chances of site test E-WM-14 and Robust Detail Lightweight aggregate cavity masonry wall (drylined) 94 failure and are the perfect 57 Superior V-WM-14 England, Wales and Scotland choice for high performing performance or prestige developments. E-WM-16 Robust Detail Dense aggregate cavity masonry wall (parged and drylined) 94 58 England and Wales E-WM-17 Lightweight aggregate cavity masonry wall (drylined) 95 59 E-WM-18 Dense aggregate cavity masonry wall (plastered) 95 60 E-WM-20 and Robust Detail Lightweight aggregate cavity masonry wall (drylined) 96 61 V-WM-20 England, Wales and Scotland E-WM-21 Lightweight aggregate cavity masonry wall (plastered) 96 62 E-WM-24 Robust Detail Aircrete cavity masonry wall (drylined) 97 63 England and Wales E-WM-25 Porotherm cavity masonry wall (drylined) 97 64

Proprietary British Gypsum Solid masonry wall with GypLyner UNIVERSAL and plaster wall linings 98 65 Approved System England, Wales and Scotland

Email: [email protected] british-gypsum.com 61 04

System reference for separating walls (cont’d)

Solutions Build method Detail / Wall type Category Description Page Detail

Superior solutions have Timber E-WT-1 and Robust Detail Timber frame without sheathing board 99 66 the potential to exceed V-WT-1 England, Wales the regulatory acoustic and Scotland performance requirement by 4 5 dB or more. They reduce the Steel E-WS-3 Robust Detail Modular build steel frame 100 67 chances of site test failure England and Wales Superior and are the perfect choice for E-WS-4 Steel frame 101 68 high performing or prestige performance developments. Proprietary British Gypsum GypWall QUIET IWL 102 69 Approved System England, Wales and Scotland

Masonry E-WM-19 and Robust Detail Lightweight aggregate cavity masonry wall (parged and drylined) with MonarFloor 103 70 V-WM-19 England, Wales Bridgestop system and Scotland Separating walls

62 Technical Advice Centre Tel: 0115 945 6123 04

Solutions Build method Detail / Wall type Category Description Page Detail

Superior solutions have Timber E-WT-1 and Robust Detail Timber frame without sheathing board 99 66 the potential to exceed V-WT-1 England, Wales the regulatory acoustic and Scotland performance requirement by 5 dB or more. They reduce the Steel E-WS-3 Robust Detail Modular build steel frame 100 67 chances of site test failure England and Wales Superior and are the perfect choice for E-WS-4 Steel frame 101 68 high performing or prestige performance developments. Proprietary British Gypsum GypWall QUIET IWL 102 69 Approved System England, Wales and Scotland

Masonry E-WM-19 and Robust Detail Lightweight aggregate cavity masonry wall (parged and drylined) with MonarFloor 103 70 V-WM-19 England, Wales Bridgestop system and Scotland Separating walls Separating

Email: [email protected] british-gypsum.com 63 04 Construction details – Rooms for residential purposes / conversions only 1 Masonry walls

DriLyner SI masonry PSR B160018 17 wall lining Improvement when lining to one side of a core masonry element (mass per unit area circa 200kg/m2) with plaster R +Ctr 53 dB w the other side Rw 60 dB 52mm Gyproc TriLine

Rw = 13 dB and Rw + Ctr = 9 dB

British Gypsum Approved System England and Wales Pre-Completion Testing required

NB Sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum. Separating walls

GypLyner UNIVERSAL masonry PSR B226003 18 wall lining Improvement when lining to one side of a core masonry element (mass per unit area circa 200kg/m2) with plaster R +Ctr 55 dB w the other side Rw 60 dB GypLyner UNIVERSAL, minimum 35mm cavity, with 2 x 12.5mm Gyproc SoundBloc, 25mm Isover Acoustic Partition Roll (APR 1200)

Rw = 13 dB and Rw + Ctr = 11 dB

British Gypsum Approved System England and Wales Pre-Completion Testing required

NB Sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

64 Technical Advice Centre Tel: 0115 945 6123 04

Construction details – Rooms for residential purposes / conversions only (cont’d) 1 Timber frame walls

Timber stud and PSR A046007 19 Gypframe RB1 Resilient Bar Overall construction nominal width 151mm 38mm x 75mm timber stud at 600mm Rw+Ctr 51 dB centres with Gypframe RB1 Resilient Bar Rw 58 dB at 600mm centres fixed to one side of 90 mins BS the stud 75mm Isover Acoustic Partition Roll (APR 1200) in the cavity Lined with a double layer of 15mm Gyproc SoundBloc

British Gypsum Approved System England and Wales Pre-Completion Testing required Separating walls Separating

NB For existing timber stud, partitions lined with lath and plaster, this specification could be used after complete removal of the lath and plaster. If the lath and plaster is in good condition then it could remain in place on the non-resilient bar side, with the double layer 15mm Gyproc SoundBloc screw-fixed through the lath and plaster into the timber framing.

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to Flanking details pages 162 - 165

Email: [email protected] british-gypsum.com 65 04 Construction details – Residential / conversions only (cont’d) 1 Steel frame walls

GypWall CLASSIC PSR A206243 20 Overall construction nominal width 208mm Gypframe 146 S 50 ‘C’ Studs at 600mm centres Rw+Ctr 53 dB R 59 dB w 50mm Isover Acoustic Partition Roll (APR 1200) in the cavity 90 mins BS Lined with a double layer of 15mm Maximum Gyproc SoundBloc height 7900mm at 600mm centres

British Gypsum Approved System England and Wales Pre-Completion Testing required

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled,or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to Flanking details pages 162 - 165 Separating walls

GypWall QUIET SF PSR A316008 21 Overall construction nominal width 138mm Gypframe 70 S 50 ‘C’ Studs at 600mm centres with Gypframe RB1 Resilient Rw+Ctr 53 dB R 61 dB Bar at 600mm centres fixed to one side w of the stud 60 mins BS 50mm Isover Acoustic Partition Roll (APR 1200) positioned in the cavity Maximum height Lined each side with a double layer of 4000mm at 12.5mm Gyproc SoundBloc 600mm centres or Lined with a double layer of 15mm Gyproc DuraLine for 120 minutes fire resistance British Gypsum Approved System England and Wales Pre-Completion Testing required

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled,or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to Flanking details pages 162 - 165

66 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Residential / conversions only (cont’d) 1 Steel frame walls

GypWall QUIET IWL PSR A216006 22 Overall construction nominal width 250mm Minimum cavity width 190mm

Rw+Ctr 52 dB Gypframe ‘I’ Studs minimum 48mm R 63 dB w depth (no bracing between leaves)

120 mins BS 100mm Isover Acoustic Partition Roll (APR 1200) in the cavity Maximum height Lined with a double layer of 15mm 2800mm at Gyproc FireLine 600mm centres using 48mm British Gypsum Approved System Gypframe England, Wales and Scotland ‘I’ Studs1 Pre-Completion Testing required

1 For other stud sizes / maximum heights, contact the Saint-Gobain Technical Academy.

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and walls Separating filled,or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to Flanking details pages 151 - 161

Email: [email protected] british-gypsum.com 67 04 Construction details – Standard performance 2 Masonry walls

E-WM-1 Masonry – dense aggregate blockwork 23 (Thistle plaster)

Overall construction nominal RD width 300mm Dense aggregate cavity block wall minimum 100mm blocks (density 1850 - 2300kg/m3) Minimum 75mm cavity between leaves Finished with 13mm Thistle plaster

Robust Detail England and Wales

Refer to Flanking details pages 138 - 146 Separating walls

E-WM-1 Masonry – dense aggregate blockwork 24 (Thistle plaster and cavity insulation)

RD Overall construction nominal width 300mm Dense aggregate cavity block wall, minimum 100mm blocks (density 1850 - 2300kg/m3) Minimum 75mm cavity between leaves 75mm Isover RD Party Wall Roll in the cavity Finished with 13mm Thistle plaster

Robust Detail England and Wales

Refer to Flanking details pages 138 - 146

68 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Standard performance (cont’d) 2 Masonry walls

E-WM-9 Masonry – dense aggregate blockwork 25 (Gyproc Soundcoat Plus and Gyproc plasterboard)

RD Overall construction nominal width 295mm 215mm wide single course block wall flat laid (density 1850 - 2300kg/m3) Nominal 15mm (minimum 13mm) sand / cement render1 Drylined with 15mm Gyproc SoundBloc using DriLyner BASIC system

Robust Detail walls Separating England and Wales

1 Sand / cement render may shrink on drying, usually with some cracking, which can appear several days after application. Therefore, care must be taken to ensure full drying is complete before drylining.

E-WM-10 Masonry – aircrete thin-joint blockwork 26 (Gyproc Soundcoat Plus and Gyproc plasterboard)

RD Overall construction nominal width 336mm Aircrete cavity block wall, minimum 100mm blocks (density 600 - 800kg/m3) Wall ties must be Ancon Building Products Staifix HRT4 Minimum 75mm cavity Nominal 8mm (minimum 6mm) Gyproc Soundcoat Plus Drylined with 12.5mm Gyproc WallBoard using DriLyner BASIC system Replace 12.5mm Gyproc WallBoard with 12.5mm Robust Detail Gyproc Habito for enhanced robustness England and Wales and fixing capability

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 69 04 Construction details – Standard performance (cont’d) 2 Masonry walls

E-WM-12 Masonry – Plasmor ‘Aglite Ultima’ 27 (Gyproc Soundcoat Plus and Gyproc plasterboard)

RD Overall construction nominal width 336mm Plasmor ‘Aglite Ultima’ block wall, minimum 100mm blocks (density 1050kg/m3) Minimum 75mm cavity between leaves Nominal 8mm (minimum 6mm) Gyproc Soundcoat Plus Drylined with 12.5mm Gyproc WallBoard using DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for Robust Detail enhanced robustness England and Wales and fixing capability

Refer to page 231 for Gyproc Habito finishing options Separating walls

Solid masonry 28 (wall type 1) Dense aggregate blocks laid flat Finished with 13mm Thistle plaster Guidance finish on each face Construction Minimum total mass per unit area 415kg/m2

Guidance Construction England and Wales

70 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Standard performance (cont’d) 2 Masonry walls

Dense aggregate cavity masonry 29 (wall type 2.1)

Dense aggregate cavity block wall, minimum 50mm cavity Guidance between leaves Construction Finished with 13mm Thistle plaster finish on each face Total mass per unit area 415kg/m2 (minimum)

Guidance Construction walls Separating England and Wales

Refer to Flanking details pages 138 - 146

Lightweight aggregate cavity masonry 30 (wall type 2.2)

Lightweight aggregate cavity block wall, minimum 75mm cavity Guidance Construction between leaves Finished with 13mm Thistle plaster finish on each face Total mass per unit area 300g/m2 (minimum)

Guidance Construction England and Wales

Refer to Flanking details pages 138 - 146

Email: [email protected] british-gypsum.com 71 04 Construction details – Standard performance (cont’d) 2 Masonry walls

Masonry between independent panels (wall type 3.1) with 31 GypLyner IWL Core masonry element minimum, mass per unit area 300kg/m2 Guidance Construction Lined each side with GypLyner IWL Lined with a double layer of 12.5mm Gyproc WallBoard TEN each side, or 12.5mm Gyproc SoundBloc The lining should be set 10mm away from the masonry core, utilising a Gypframe 48 I 50 ‘I’ Stud Maximum height of 2700mm when using Gypframe 48 I 50 ‘I’ Studs at 600mm centres

Lining cavity width of 60mm when Replace outer layer with using Gypframe 48 I 50 ‘I’ Studs 12.5mm Gyproc Habito for enhanced robustness and fixing capability British Gypsum Approved System England and Wales Pre-Completion Testing required Refer to page 231 for Gyproc Habito finishing options Separating walls

Cavity masonry wall PSR B160032 32 (Thistle plaster) Overall construction width 306mm Twin leaf 100mm lightweight aggregate blocks with minimum DnTw 56 dB 80mm cavity (1600kg/m3) Minimum 13mm Thistle plaster to both sides

British Gypsum Approved System England, Wales and Scotland Pre-Completion Testing required

Refer to Flanking details pages 138 - 146

72 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Standard performance (cont’d) 2 Masonry walls

Cavity masonry wall PSR B160012 (Gyproc Soundcoat Plus 0033 and Gyproc plasterboard)

Overall construction width 341mm

DnTw 56 dB Twin leaf 100mm lightweight aggregate blocks (1600kg/m3) with minimum 100mm cavity 8mm Gyproc Soundcoat Plus and 12.5mm Gyproc WallBoard on dabs to both sides

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

British Gypsum Approved System

England, Wales and Scotland walls Separating Pre-Completion Testing required

Refer to Flanking details pages 138 - 146 Refer toRefer page to 231 Flanking for Gyproc details Habito pages finishing 000 - 000 options

Cavity masonry wall PSR ADEW005 (Gyproc Soundcoat Plus 34 and Gyproc plasterboard)

Overall construction width 341mm

DnTw 56 dB Twin leaf 100mm dense aggregate blocks (2000kg/m3) with minimum 100mm cavity 8mm Gyproc Soundcoat Plus and 12.5mm Gyproc WallBoard on dabs to both sides

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

British Gypsum Approved System England, Wales and Scotland Pre-Completion Testing required

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 73 04 Construction details – Standard performance (cont’d) 2 Steel frame walls

E-WS-1 Steel frame 35 For use in lightweight steel frame housing or flats / apartments Minimum cavity width 200mm

RD Loadbearing studs (by others) Overall construction nominal Min. 60 mins width 263mm BS1 50mm Isover Frame Batt 32 positioned between the frames or 65mm Isover Acoustic Partition Roll (APR 1200) positioned between the studs in each frame Board options: Inner layer of 19mm Gyproc Plank, outer layer of 12.5mm Gyproc WallBoard each side, or Double layer of 15mm Gyproc SoundBloc each side

Robust Detail England and Wales 1 Subject to manufacturers’ substantiation based on their loadbearing stud.

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options Separating walls

E-WS-2 Steel frame PSR A216007 GypWall QUIET IWL 36 (Non-loadbearing)

Overall construction nominal width 250mm RD Minimum cavity width 190mm Min. 90 mins BS Gypframe ‘I’ Studs minimum 60mm depth (no bracing between leaves) Maximum height 3900mm at 100mm Isover Acoustic Partition Roll 600mm centres (APR 1200) positioned between using Gypframe the frames 60 I 70 ‘I’ Studs Board options: Double layer of 15mm Gyproc SoundBloc each side (for 90 minutes BS and EN fire resistance) or Overboarded with one layer of 12.5mm Gyproc FireLine each side (for Robust Detail 120 minutes BS and EN fire resistance) England and Wales

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used , and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with Robust Details Limited.

Refer to Flanking details pages 151 - 161

74 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Standard performance (cont’d) 2 Steel frame walls

GypWall CLASSIC with PSR A206A243 37 Gypframe AcouStuds Overall construction nominal width 208mm Gypframe 146 AS 50 AcouStud at Rw+Ctr 56 dB 600mm centres Rw 61 dB 50mm Isover Acoustic Partition Roll 90 mins BS (APR 1200) in the cavity

Maximum Lined with a double layer of 15mm height Gyproc SoundBloc each side, 8100mm at or Double layer of 15mm 600mm centres Gyproc DuraLine for 120 minutes fire resistance

British Gypsum Approved System England and Wales Pre-Completion Testing required

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and walls Separating filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to Flanking details pages 162 - 165

GypWall QUIET PSR A216009 PSR A216010 38 Overall construction nominal width 200mm Two frames of 48mm Gypframe ‘C’ Stud at 600mm centres, cross

Rw+Ctr 53 dB braced at 1200mm centres Rw 62 dB Cavity width of 140mm 90 mins BS 50mm Isover Acoustic Partition Roll (APR 1200) positioned between Maximum height the frames 7500mm at Lined with a double layer of 15mm 600mm centres, Gyproc SoundBloc each side, cross-braced at 1200mm or Double layer of 15mm Gyproc centres FireLine for 120 minutes fire resistance British Gypsum Approved System England and Wales Pre-Completion Testing required

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to Flanking details pages 151 - 161

Email: [email protected] british-gypsum.com 75 04 Construction details – Standard performance (cont’d) 2 Steel frame walls

GypWall QUIET SF PSR A316009 39 Overall construction nominal width 148mm 70mm Gypframe ‘C’ Studs at 600mm centres with Gypframe RB1 Resilient Bar R +Ctr 54 dB w at 600mm centres fixed to one side of R 62 dB w the studs 90 mins BS 50mm Isover Acoustic Partition Roll (APR 1200) positioned in the cavity Maximum height Lined with a double layer of 15mm 4200mm at Gyproc SoundBloc each side 600mm centres or Double layer of 15mm Gyproc DuraLine for 120 minutes fire resistance British Gypsum Approved System England and Wales Pre-Completion Testing required

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to Flanking details pages 162 - 165 Separating walls

GypWall QUIET SF – with additional service zone 40 created with GypLyner UNIVERSAL

Base separating wall, GypWall QUIET SF Rw+Ctr 54 dB Rw 62 dB A wall lining with:

90 mins BS Minimum 70mm cavity Minimum 50mm Isover Acoustic Maximum Partition Roll (APR 1200) in the cavity height 4200mm at Single layer of 15mm Gyproc SoundBloc 600mm centres installed on one or both sides of the base GypWall QUIET SF construction British Gypsum Approved System This solution can be used without England and Wales lowering the acoustic performance of GypWall QUIET SF Pre-Completion Testing required

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to Flanking details pages 162 - 165

76 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Standard plus performance 3 Masonry walls

E-WM-2 Masonry - lightweight aggregate 41 blockwork (Thistle plaster)

Overall construction nominal width 300mm RD Lightweight aggregate cavity block Hea 2 wall minimum 100mm blocks (density 1350 - 1600kg/m3) 1 Minimum 75mm cavity between leaves Credit Finished with 13mm Thistle plaster Code for Sustainable Homes

Robust Detail walls Separating England and Wales

Refer to Flanking details pages 138 - 146

E-WM-2 Masonry – lightweight aggregate 42 blockwork (with Thistle plaster and cavity insulation) RD Overall construction nominal width 300mm Hea 2 Lightweight aggregate cavity block wall, minimum 100mm blocks 1 3 Credit (density 1350 - 1600kg/m ) Minimum 75mm cavity Code for between leaves Sustainable Homes 75mm Isover RD Party Wall Roll in the cavity Finished with 13mm Thistle plaster

Robust Detail England and Wales

Refer to Flanking details pages 138 - 146

Email: [email protected] british-gypsum.com 77 04

Construction details – Standard plus performance (cont’d)

Choosing plasters

Thistle plasters provide technical solutions, developed to meet the changing needs of housebuilders and homeowners. Whether you choose the two-coat systems, or use a plaster skim on drylined walls, you can select from our range of products to deliver a multitude of solutions.

Choose from extra durable plasters that protect against scuffs and knocks, to plasters specially designed for different types of backgrounds.

Thistle plasters - creating wall solutions for modern homes. Separating walls

78 Technical Advice Centre Tel: 0115 945 6123 04

Construction details – Standard plus performance (cont’d)

Thistle plaster performance benefits

Airtightness – reduce heat loss Thermal mass

Air leakage can seriously downgrade the overall thermal Thermal mass usage in building design can help to cut CO2 performance of a home. Unwanted drafts, and uncontrolled emissions by reducing the heating and cooling demands of air flow through gaps, are estimated to be the cause of the building. It may be used as part of the SAP calculations. considerable energy loss from modern homes. This results in higher heating bills and higher CO2 emissions. With How thermal mass is incorporated into the design depends Thistle plaster linings many of these gaps and cracks are on the building use. It will generally slow down the rate at filled automatically and air loss considerably reduced. which internal temperatures rise or fall. A ‘thermally heavy’ building heats up more slowly, and retains its heat for longer, Airtightness testing of new dwellings is now mandatory for with the effect that it is cooler during the heating period developments of over two units under Approved Document (day) but warmer during the cooling period (night). This Part L of the national Building Regulations in England and can be very beneficial for buildings such as residential care Wales and Section 6 of the Scottish Building Standards. homes, where a fairly constant temperature is needed. A sample of each type of dwelling must be tested and be within the air leakage rate stated in the dwelling’s SAP Thistle plaster is ideal for use where thermal mass is an calculations. Thistle plaster finishes will help to achieve integral part of the design of a building. Plaster provides the the required standards, making homes more affordable for desired decorative finish whilst also enabling efficient heat homeowners year after year. transfer between the air and the fabric of the building.

The benefits of Thistle plaster – don’t just take our word for it

“Direct plastering is the most effective way of providing walls Separating airtightness for masonry walls…” BS EN 13914-2:2005: Design considerations and essential principles for internal plastering

“Gyproc Ireland commissioned BSRIA to carry out tests using Gyproc Hard Coat (Thistle Hardwall) with a skim finish applied to block wall. The results showed air leakage of 0.034m3/hr.m2 at 50Pa, well under the 0.6 Passive House Standards. This essentially shows that applying a plaster finish dramatically reduces the porosity, thereby increasing the airtightness of the wall”. BSRIA Air leakage tests B26698

“The Stamford Brook P11 project included investigation into airtightness on a large scale housing project. The results showed that masonry cavity construction could easily achieve the target air permeability rate of 5m3/hr.m2 at 50Pa, and that there was nothing intrinsically difficult in achieving levels as low as 2. In principle, masonry construction with a parged or wet plastered inner surface linked to airtight window and door components and an air barrier in the roof and ground floor is quite capable of delivering very low levels of airtightness. A terrace of four very low energy wet plastered dwellings were, in fact, delivering levels below 1.3, five or six years after completion”. Stamford Brook development research – Leeds Metropolitan University, Centre for the Built Environment

Email: [email protected] british-gypsum.com 79 04

Construction details – Standard plus performance (cont’d)

Thistle plaster installation benefits

Easy to use Whether you are using two-coat plaster or skimming plasterboard, you’ll find Thistle plasters easy to use: – Great consistency: Use straight from the bag and add clear water for reliable consistency. It’s much harder to achieve a consistent performance with site mixed material (e.g. sand and cement) – Easy to handle: Standard 25kg bags are easy to handle and carry, even in confined spaces. This is really helpful when working upstairs as it can be a “one man lift” – Low waste: With plaster you can just mix what you need. No off-cuts to worry about and, correctly stored, part bags can generally be used on the next job – Stability: With Thistle undercoat plasters there’s very little shrinkage. There is no danger of cracks appearing days or weeks later due to shrinkage of the plaster

“TAS regularly receives reports concerning the problem of the final plaster (skim) coating cracking and shelling off cement-based undercoats. Because of the inherent nature of Portland cement, most rendering products shrink on drying out. If a final coat is applied too early before the undercoat has sufficiently dried out, then the problem of shelling is likely to occur. The length of time needed for the undercoat to dry out will depend on

Separating walls many factors including the wetness of the background, undercoat thickness and air humidity and temperature” Building Employers Confederation – Technical Advisory Service Bulletin

80 Technical Advice Centre Tel: 0115 945 6123 04 Separating walls Separating NEW INFO REQUIRED

Email: [email protected] british-gypsum.com 81 04 Thistle Plaster selector guide Undercoat solid plaster

What is the background surface?

High suction Low multiboard Aircrete blocks Aircrete bricks Common Medium-density blocks Dense blocks with Engineering bricks joints raked & Plasterboard F Glasroc Cast in situ & pre-cast concrete / tiled surfaces Painted Metal lathing Thickness applied – walls Thickness applied – ceilings per bag hand applied Coverage 11mm) (at per bag) (litres requirement Water Dry set 11mm) weight (at

NOT ON WHEN Thistle HardWall SMOOTH BRIDGING LOW COLUMNS High impact SUCTION AND LINTELS BLOCKS

resistance for 2 most masonry 2 backgrounds. Can 11mm 8mm 3.0m be spray applied 15 9.3kg/m

NOT ON WHEN Thistle ToughCoat SMOOTH BRIDGING LOW COLUMNS High coverage for SUCTION AND LINTELS BLOCKS

most masonry 2 backgrounds. Can 2 be spray applied 11mm 8mm 3.5m 17.5 8.5kg/m

Thistle Browning

For solid USE IN

Two coat Two EXTREME

backgrounds CASES 2 Separating walls Separating walls with adequate key 2 11mm 8mm 3.5m 17.5 8.4kg/m

Thistle BondingCoat

For smooth and USE ON USE ON MR SMOOTH BOARDS 2 low suction LOW SUCTION 2 backgrounds BLOCKS 11mm 8mm 2.75m 14 12.1kg/m

Thistle Universal

OneCoat USE ON USE ON MR SMOOTH BOARD For hand or spray 13mm LOW 13mm

SUCTION at 2 application to BLOCKS at most backgrounds 2 One coat 13mm 10mm 2.25m 15 15kg/m

Thistle plasters should only be applied to backgrounds where the minimum temperature will remain at 2°C or above until dry.

Setting times: Thistle undercoat plasters – 1½ to 2 hours.

Thistle GypPrime Thistle Bond-It Suction control primer used to reduce suction on very Bonding agent for smooth low suction dry backgrounds. Use diluted (up to 5 parts water to one backgrounds. Apply undiluted, in one part Thistle GypPrime) or undiluted if severe suction coat. Plaster when dry. (Not to be used control is required. Plaster is applied after Thistle with Thistle HardWall) GypPrime has soaked into the background. Use Thistle Bond-It where you see this Bonding agent Suction control Use Thistle GypPrime where you see this symbol symbol

Recommended for use

82 Technical Advice Centre Tel: 0115 945 6123 04

Thistle Plaster selector guide (continued) Undercoat solid plaster Skim finish plaster

What is the background surface? What is the background surface? suction High suctionsuction Low multiboard Aircrete blocks Aircrete bricks Common Medium-density blocks Dense blocks with Engineering bricks joints raked & Plasterboard F Glasroc Cast in situ & pre-cast concrete / tiled surfaces Painted Metal lathing Thickness applied – walls Thickness applied – ceilings per bag hand applied Coverage 11mm) (at per bag) (litres requirement Water Dry set 11mm) weight (at Dry undercoats Damp undercoats Plasterboard smooth concrete Flat, Waterproofed undercoats cement-based Thickness applied 2mm) per bag (at Coverage requirement Water per bag) (litres Dry set weight 2mm thickness) (at

NOT ON WHEN Thistle MultiFinish DAMPEN Thistle HardWall SMOOTH BRIDGING BACKGROUND

LOW COLUMNS A versatile plaster for skim finishing FIRST 2 High impact SUCTION AND LINTELS USE ON BLOCKS MR BOARDS undercoats and plasterboards 2 resistance for 2 most masonry 2 backgrounds. Can 2mm 10m 11.5 3.4kg/m 11mm 8mm 3.0m be spray applied 15 9.3kg/m Thistle BoardFinish

NOT ON WHEN For low to medium suction backgrounds 2 Thistle ToughCoat SMOOTH BRIDGING USE ON LOW COLUMNS MR BOARDS

especially plasterboard 2 High coverage for SUCTION AND LINTELS BLOCKS most masonry 2 2mm 10m 11.5 3.4kg/m Separating walls Separating backgrounds. Can walls Separating 2 be spray applied Thistle SprayFinish 11mm 8mm 3.5m 17.5 8.5kg/m 2 Essential finish Essential Gypsum finish plaster for spray or USE ON MR BOARDS Thistle Browning hand application 2

For solid USE IN 2mm 11m 12 2.4kg/m Two coat Two EXTREME backgrounds CASES 2 with adequate key 2 Thistle DuraFinish

A versatile plaster that is 60% tougher 2 11mm 8mm 3.5m 17.5 8.4kg/m

than standard skim plasters 2 Thistle BondingCoat 2mm 10m 12 3.4kg/m For smooth and USE ON USE ON MR SMOOTH BOARDS 2 DAMPEN low suction LOW Thistle PureFinish BACKGROUND SUCTION 2 backgrounds FIRST 2 BLOCKS Finish plaster containing ACTIVair technology USE ON MR BOARDS

for finishing undercoat plasters and 2

11mm 8mm 2.75m 14 12.1kg/m plasterboard Thistle Universal 2mm 10m 11.5 3.4kg/m

OneCoat USE ON USE ON MR Thistle UniFinish1 SMOOTH BOARD 13mm

For hand or spray 2 LOW 13mm The plaster that works without PVA

SUCTION at 2 application to at BLOCKS finish Performance 2 most backgrounds 2 2mm 10m 12 3.4kg/m One coat 13mm 10mm 2.25m 15 15kg/m

Thistle plasters should only be applied to backgrounds where the minimum temperature will remain at 2°C or above until dry (except for Thistle DuraFinish which should remain at 5°C or above until dry). On flat surfaces, 2mm is recommended. If the surface is very uneven, consider dubbing it out with an undercoat.

Thistle Magnetic Plaster Thistle DriCoat A Thistle plaster that attracts magnets leaving a quality Cement based plaster for replastering after surface for internal walls and a durable base for applying a damp proof course. Finished with Thistle decorative finishes. Can be used to finish a wide range BoardFinish. Coverage is 3.25m2 per bag. of backgrounds, including undercoat plasters and plasterboard. A minimum of 3mm thickness should be applied and coverage is 5.1m2 per bag. Specialist plasters

1 See british-gypsum.com/thistle-unifinish for full details.

Email: [email protected] british-gypsum.com 83 04 Construction details – Standard plus performance (cont’d) 3 Masonry walls

E-WM-3 Masonry – dense aggregate blockwork (render 43 and Gyproc plasterboard)

Overall construction nominal width 336mm RD Dense aggregate cavity block wall, Hea 2 minimum 100mm blocks (density 1850 - 2300kg/m3) 1 Minimum 75mm cavity between leaves Credit Nominal 8mm (minimum 6mm) Gyproc Soundcoat Plus Code for Sustainable Drylined with 12.5mm Gyproc WallBoard Homes using DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability Robust Detail England and Wales

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options Separating walls Separating walls

E-WM-4 Masonry – lightweight aggregate 44 blockwork (Gyproc Soundcoat Plus and Gyproc plasterboard)

RD Overall construction nominal width 336mm Hea 2 Lightweight aggregate cavity block wall, minimum 100mm blocks 1 (density 1350 - 1600kg/m3) Credit Minimum 75mm cavity between leaves

Code for Nominal 8mm (minimum 6mm) Sustainable Gyproc Soundcoat Plus Homes Drylined with 12.5mm Gyproc WallBoard using DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness Robust Detail and fixing capability England and Wales

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

84 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Standard plus performance (cont’d) 3 Masonry walls

E-WM-5 Masonry – Besblock ‘Star Performer’ cellular 45 blockwork (Gyproc Soundcoat Plus and Gyproc plasterboard)

Overall construction nominal RD width 336mm

Hea 2 Dense aggregate Besblock ‘Star Performer’ cellular cavity block 1 wall minimum 100mm Credit Minimum 75mm cavity between leaves Nominal 8mm (minimum 6mm) Code for Gyproc Soundcoat Plus Sustainable Homes Drylined with 12.5mm Gyproc WallBoard using DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard with 12.5mm Separating walls Separating Gyproc Habito for Robust Detail walls Separating enhanced robustness and fixing capability England and Wales

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

E-WM-6 Masonry – aircrete blockwork 46 (Gyproc Soundcoat Plus and Gyproc plasterboard)

RD Overall construction nominal width 336mm Hea 2 Aircrete cavity block wall, minimum 100mm blocks 1 (density 600 - 800kg/m3) Credit Minimum 75mm cavity between leaves

Code for Nominal 8mm (minimum 6mm) Sustainable Gyproc Soundcoat Plus Homes Drylined with 12.5mm Gyproc WallBoard using DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness Robust Detail and fixing capability England and Wales

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 85 04 Construction details – Standard plus performance (cont’d) 3 Masonry walls

E-WM-8 Masonry – lightweight aggregate 47 blockwork (35mm Isover RD35 and Gyproc plasterboard) RD Overall construction nominal width 320mm Hea 2 Lightweight aggregate cavity block wall, minimum 100mm blocks 1 3 Credit (density 1350 - 1600kg/m ) Minimum 75mm cavity between leaves Code for Sustainable 35mm Isover RD35 in the cavity Homes Drylined with 12.5mm Gyproc WallBoard TEN, 15mm Gyproc WallBoard Replace wall lining with or 12.5mm Gyproc SoundBloc 12.5mm Gyproc Habito using DriLyner BASIC system for enhanced robustness and fixing capability Robust Detail England and Wales

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options Separating walls Separating walls

E-WM-15 Masonry – aircrete blockwork 48 (35mm Isover RD35 and Gyproc plasterboard)

RD Overall construction nominal width 320mm Aircrete cavity block wall, Hea 2 minimum 100mm blocks (density 600 - 800kg/m3) 1 Credit Minimum 75mm cavity between leaves 35mm Isover RD35 in the cavity Code for Sustainable Drylined with 12.5mm Homes Gyproc WallBoard TEN, 15mm Gyproc WallBoard or 12.5mm Gyproc SoundBloc using DriLyner BASIC system Replace wall lining with 12.5mm Gyproc Habito for enhanced robustness Robust Detail and fixing capability England and Wales

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

86 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Standard plus performance (cont’d) 3 Masonry walls

E-WM-26 Masonry – Besblock ‘Star Performer’ 49 dense aggregate cellular blockwork (Isover RD Party Wall Roll RD and Gyproc plasterboard)

Overall construction nominal Hea 2 width 336mm 1 Dense aggregate Besblock ‘Star Credit Performer’ cellular cavity block wall minimum 100mm Code for Minimum 100mm cavity Sustainable between leaves Homes 100mm Isover RD Party Wall Roll in the cavity Drylined with 12.5mm Gyproc WallBoard using DriLyner BASIC system Separating walls Separating Separating walls Separating

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for Robust Detail enhanced robustness and fixing capability England and Wales

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 87 04 Construction details – Standard plus performance (cont’d) 3 Timber frame walls

E-WT-2 and V-WT-2 Timber 50 frame with sheathing board Overall construction nominal width 300mm

RD Minimum 240mm width between the inner facings of the linings Min. Minimum 50mm gap between 60 mins BS sheathing panels

Hea 2 65mm Isover Acoustic Partition Roll (APR 1200) or 90mm Isover Frame Batt 32 1 positioned between the studs in Credit each timber frame Code for Board options: Sustainable Inner layer of 19mm Gyproc Plank, Homes outer layer of 12.5mm Gyproc WallBoard each side, or Double layer of 15mm Gyproc SoundBloc each side, or Double layer of 15mm Gyproc FireLine each side, or Inner layer of 19mm Gyproc Plank, outer layer of 12.5mm Gyproc FireLine Replace outer layer of Separating walls Separating walls each side 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito Robust Detail for enhanced robustness England, Wales and Scotland and fixing capability

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with Robust Details Limited. Based on 80% Load Ratio.

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

88 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Standard plus performance (cont’d) 3 Timber frame walls

E-WT-3 and V-WT-3 Timber frame – ElecoFrame 51 prefabricated panels

Overall construction nominal width 300mm Cavity width minimum 240mm with a gap of minimum 50mm between frames (must not be braced by any diagonal bracing) Ties between frames not more than 40mm x 3mm at 1200mm (minimum) centres horizontally, one row of ties per storey height vertically 65mm Isover Acoustic Partition Roll (APR 1200) or 90mm Isover Frame Batt 32 positioned between the studs in each timber frame Separating walls Separating Separating walls Separating Board options: Replace outer layer of Inner layer of 19mm Gyproc Plank 12.5mm Gyproc WallBoard and outer layer of 12.5mm with 12.5mm Gyproc Habito for enhanced robustness Gyproc WallBoard each side, and fixing capability or Double layer of 15mm Gyproc SoundBloc each side, or Double layer of 15mm Gyproc FireLine each side, or Inner layer of 19mm Gyproc Plank and outer layer of 12.5mm Robust Detail Gyproc FireLine each side England, Wales and Scotland

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 89 04 Construction details – Standard plus performance (cont’d) 3 Steel frame walls

GypWall CLASSIC with PSR A206A255 52 Gypframe AcouStuds Overall construction nominal width 208mm Gypframe 146 AS 50 AcouStud at Rw+Ctr 57 dB

Rw 61 dB 600mm centres 150mm Isover Acoustic Partition Roll 90 mins BS (APR 1200) in the cavity Maximum Lined with a double layer of 15mm height Gyproc SoundBloc each side 8100mm at or Double layer of 15mm 600mm centres Gyproc DuraLine for 120 minutes fire resistance

Hea 2 1 Credit

Code for Sustainable

Separating walls Homes British Gypsum Approved System England and Wales Pre-Completion Testing required

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to Flanking details pages 162 - 165

90 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Standard plus performance (cont’d) 3 Steel frame walls

GypWall QUIET PSR A216011 53 Overall construction nominal width 250mm Two frames of 48mm Gypframe ‘C’ Stud at 600mm centres, cross R +Ctr 57 dB w braced at 1200mm centres Rw 63 dB Cavity width of 190mm 90 mins BS 75mm Isover High Performance Maximum Acoustic Slab positioned between height the frames 7500mm at 600mm centres, Lined with a double layer of 15mm cross-braced Gyproc SoundBloc each side at 1200mm or Double layer of 15mm centres Gyproc DuraLine for 120 minutes fire resistance Separating walls Separating Hea 2 1 Credit

Code for Sustainable British Gypsum Approved System Homes England, Wales and Scotland Pre-Completion Testing required

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to Flanking details pages 151 - 161

Email: [email protected] british-gypsum.com 91 04 Construction details – Standard plus performance (cont’d) 3 Steel frame walls

GypWall QUIET IWL PSR A216014 54 Overall construction nominal width 200mm Two frames of Gypframe 48 I 50 ‘I’ Studs at 600mm centres Rw+Ctr 58 dB R 66 dB w Cavity width of 140mm wide 50mm Isover Acoustic Partition Roll 90 mins BS (APR 1200) positioned in the cavity Maximum Lined with a double layer of 15mm height Gyproc SoundBloc each side 2800mm at 600mm centres

Hea 2 1 Credit

Code for Sustainable Separating walls Separating walls Homes British Gypsum Approved System England, Wales and Scotland Pre-Completion Testing required

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to Flanking details pages 151 - 161

92 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Superior performance 4 Masonry walls

E-WM-11 Masonry – lightweight aggregate 55 blockwork with 100mm cavity (Gyproc Soundcoat Plus and Gyproc plasterboard) RD Overall construction nominal Hea 2 width 361mm Lightweight aggregate cavity block 3 wall, minimum 100mm blocks Credits (density 1350 - 1600kg/m3) Minimum 100mm cavity Code for between leaves Sustainable Homes Nominal 8mm (minimum 6mm) Gyproc Soundcoat Plus Drylined with 12.5mm Gyproc WallBoard using DriLyner BASIC system Replace 12.5mm Gyproc WallBoard with 12.5mm Separating walls Separating Gyproc Habito for walls Separating Robust Detail enhanced robustness England, Wales and Scotland and fixing capability

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

E-WM-13 Masonry – aircrete thin-joint 56 untied blockwork (Gyproc Soundcoat Plus and Gyproc plasterboard) RD Overall construction nominal Hea 2 width 336mm Aircrete cavity block wall, minimum 3 100mm blocks (density 600 - 800kg/m3) Credits No wall ties are to be inserted in the separating wall Code for Sustainable Minimum 75mm cavity between leaves Homes Nominal 8mm (minimum 6mm) Gyproc Soundcoat Plus Drylined with 12.5mm Gyproc Replace 12.5mm Gyproc WallBoard using DriLyner BASIC system WallBoard with 12.5mm Gyproc Habito for Robust Detail enhanced robustness England and Wales and fixing capability

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 93 04 Construction details – Superior performance (cont’d) 4 Masonry walls

E-WM-14 and V-WM-14 Masonry – lightweight aggregate 57 blockwork with 100mm cavity (35mm Isover RD35 and Gyproc plasterboard) RD Overall construction nominal width 345mm Hea 2 Lightweight aggregate cavity block wall, minimum 100mm blocks 3 3 Credits (density 1350 - 1600kg/m ) Minimum 100mm cavity Code for between leaves Sustainable Homes 35mm Isover RD35 in the cavity Drylined with 12.5mm Gyproc WallBoard TEN, 15mm Gyproc WallBoard or 12.5mm Gyproc Replace wall lining with 12.5mm Gyproc Habito SoundBloc using DriLyner BASIC system for enhanced robustness and fixing capability Robust Detail England, Wales and Scotland

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options Separating walls Separating walls

E-WM-16 Masonry – dense aggregate blockwork 58 (Gyproc Soundcoat Plus and Gyproc plasterboard)

Hea 2 Overall construction nominal width 361mm 3 Dense aggregate cavity block wall, Credits minimum 100mm blocks (density 1850 - 2300kg/m3) Code for Sustainable Minimum 100mm cavity between leaves Homes Nominal 8mm (minimum 6mm) Gyproc Soundcoat Plus Drylined with 12.5mm Gyproc WallBoard using the DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for Robust Detail enhanced robustness England and Wales and fixing capability

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

94 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Superior performance (cont’d) 4 Masonry walls

E-WM-17 Masonry – lightweight aggregate blockwork 59 (Isover RD Party Wall Roll and Gyproc plasterboard)

Overall construction nominal Hea 2 width 325mm 3 Lightweight aggregate cavity block Credits wall, minimum 100mm blocks (density 1350 - 1600kg/m3) Code for Minimum 75mm cavity between leaves Sustainable Homes 75mm Isover RD Party Wall Roll in the cavity Drylined with 12.5mm Gyproc WallBoard TEN, 15mm Gyproc WallBoard or 12.5mm Gyproc SoundBloc using the DriLyner BASIC system Replace wall lining with 12.5mm Gyproc Habito Separating walls Separating Separating walls Separating Robust Detail for enhanced robustness England and Wales and fixing capability

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

E-WM-18 Masonry – dense aggregate blockwork 60 (Isover RD Party Wall Roll and Thistle plaster)

Hea 2 Overall construction nominal width 325mm 3 Dense aggregate cavity block wall, Credits minimum 100mm blocks (density 1850 - 2300kg/m3) Code for Sustainable Minimum 100mm cavity Homes between leaves 100mm Isover RD Party Wall Roll in the cavity Finished with 13mm Thistle plaster

Robust Detail England and Wales

Refer to Flanking details pages 138 - 146

Email: [email protected] british-gypsum.com 95 04 Construction details – Superior performance (cont’d) 4 Masonry walls

E-WM-20 and V-WM-20 Masonry – lightweight 61 aggregate blockwork (Isover RD Party Wall Roll and Gyproc plasterboard) Hea 2 Overall construction nominal 3 width 350mm Credits Lightweight aggregate cavity block wall, minimum 100mm blocks Code for (density 1350 - 1600kg/m3) Sustainable Homes Minimum 100mm cavity between leaves 100mm Isover RD Party Wall Roll in the cavity Drylined with 12.5mm Gyproc WallBoard TEN, 15mm Gyproc WallBoard or 12.5mm Gyproc SoundBloc using the Replace wall lining with DriLyner BASIC system 12.5mm Gyproc Habito for enhanced robustness Robust Detail and fixing capability England, Wales and Scotland

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options Separating walls Separating walls

E-WM-21 and V-WM-21 Masonry – lightweight 62 aggregate blockwork (with Thistle Plaster)

Hea 2 Overall construction nominal width 325mm 3 Lightweight aggregate cavity block Credits wall, minimum 100mm blocks (density 1850 - 2300kg/m3) Code for Minimum 100mm cavity Sustainable Homes between leaves 100mm Isover RD Party Wall Roll in the cavity Finished with 13mm Thistle plaster

Robust Detail England, Wales and Scotland

Refer to Flanking details pages 138 - 146

96 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Superior performance (cont’d) 4 Masonry walls

E-WM-24 Masonry – aircrete blockwork 63 (Isover RD Party Wall Roll and Gyproc plasterboard)

Hea 2 Overall construction nominal width Aircrete cavity block wall, minimum 3 100mm blocks (density 600 - 800kg/m3) Credits Minimum 100mm cavity between leaves Code for Sustainable 100mm Isover RD Party Wall Roll Homes in the cavity Drylined with 12.5mm Gyproc WallBoard using the DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard with 12.5mm Separating walls Separating Gyproc Habito for walls Separating enhanced robustness Robust Detail and fixing capability England and Wales

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

E-WM-25 Masonry – Porotherm blockwork (render 64 and Gyproc plasterboard)

Overall construction nominal width Hea 2 Porotherm cavity clay block wall, minimum 100mm blocks 3 Minimum 100mm cavity Credits between leaves

Code for 100mm Isover RD Party Wall Roll Sustainable in the cavity Homes Nominal 4mm (minimum 3mm) Porotherm Ecoparge Drylined with 12.5mm Gyproc WallBoard using the DriLyner BASIC system

Robust Detail England and Wales

Refer to Flanking details pages 138 - 146

Email: [email protected] british-gypsum.com 97 04 Construction details – Superior performance (cont’d) 4 Masonry walls

Masonry walls and PSR B226005 65 GypLyner UNIVERSAL lining Core masonry element mass per unit area minimum 200kg/m2, e.g. 100mm high density aggregate blocks

Rw+Ctr 59 dB GypLyner UNIVERSAL wall lining to one Rw 66 dB side of wall with minimum 85mm cavity (framing at 600mm centres) Hea 2 Lined with double layer of 12.5mm 3 Gyproc SoundBloc, 50mm Isover Credits Acoustic Partition Roll (APR 1200) in the cavity Code for Other side lined with either Sustainable 12.5mm Gyproc WallBoard on the Homes DriLyner BASIC system or 13mm Thistle plaster finish British Gypsum Approved System England, Wales and Scotland Nominal width 232mm (drylined) or 223mm (plastered) Pre-Completion Testing required

NB Sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum. Separating walls Separating walls

98 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Superior performance (cont’d) 4 Timber walls

E-WT-1 and V-WT-1 Timber frame without 66 sheathing board

Overall construction nominal width 300mm RD Cavity width minimum 240mm, gap of Min. minimum 50mm between frames 60 mins BS 65mm Isover Acoustic Partition Roll (APR 1200) Hea 2 or 90mm Isover Frame Batt 32 positioned between the studs 3 in each timber frame Credits Board options: Code for Inner layer of 19mm Gyproc Plank, Sustainable outer layer of 12.5mm Homes Gyproc WallBoard each side, or Double layer of 15mm Gyproc SoundBloc each side, Replace outer layer of 12.5mm Separating walls Separating or Double layer of 15mm Gyproc WallBoard with walls Separating Gyproc FireLine each side, 12.5mm Gyproc Habito for or Inner layer of 19mm Gyproc Plank, enhanced robustness and fixing capability outer layer of 12.5mm Gyproc FireLine each side

Robust Detail England, Wales and Scotland

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 99 04 Construction details – Superior performance (cont’d) 4 Steel frame

E-WS-3 Modular build 67 steel frame Only for use in lightweight steel frame housing or flats / apartments

RD Overall construction nominal width 264mm Min. Minimum 72mm or 100mm 1 60 mins BS loadbearing studs (by others)

Hea 2 Minimum 40mm gap between sheathing panels 3 Minimum 75mm mineral Isover TS48 Credits Slab (45kg/m3) positioned between the studs Code for 72mm studs Sustainable Double layer of 15mm Rigidur H Homes 100mm studs Robust Detail Double layer of 12.5mm Rigidur H England and Wales

1 Subject to manufacturers’ substantiation based on their loadbearing stud.

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used , and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with Robust Details Limited. Separating walls Separating walls Refer to Flanking details pages 151 - 161

100 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Superior performance (cont’d) 4 Steel frame

E-WS-4 Steel frame 68 For use in lightweight steel frame housing or flats / apartments Minimum cavity width 250mm

RD Overall construction nominal width 313mm Min. Minimum 75mm loadbearing ‘C’ studs 60 mins BS1 (by others) Hea 2 90mm Isover Frame Batt 32 positioned between the frames 3 Board options: Credits Inner layer of 19mm Gyproc Plank, outer layer of 12.5mm Code for Gyproc WallBoard each side, Sustainable or Double layer of 15mm Homes Gyproc SoundBloc each side Replace outer layer of 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for Separating walls Separating enhanced robustness and walls Separating Robust Detail fixing capability England and Wales

1 Subject to manufacturers’ substantiation based on their loadbearing stud.

NB Sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 101 04 Construction details – Superior performance (cont’d) 4 Steel frame

GypWall QUIET IWL PSR A216013 69 Overall construction nominal width 250mm Two frameworks of Gypframe 60 I 50 ‘I’ Stud Rw+Ctr 62 dB

Rw 70 dB Cavity width of 190mm wide 100mm Isover Acoustic Partition Roll 90 mins BS (APR 1200) in the cavity Maximum Lined with a double layer of 15mm height Gyproc SoundBloc each side 3300mm at 600mm centres

Hea 2 3 Credits British Gypsum Approved System Code for England, Wales and Scotland Sustainable Pre-Completion Testing required Homes

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used , and Separating walls Separating walls the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with Robust Details Limited.

Refer to Flanking details pages 151 - 161

102 Technical Advice Centre Tel: 0115 945 6123 04 Construction details – Superior performance (cont’d) 4 Masonry walls

E-WM-19 and V-WM-19 Masonry – dense or 70 lightweight aggregate blockwork (with Gyproc Soundcoat Plus Hea 2 and Gyproc plasterboard)

Overall construction nominal 4 width 361mm Credits Dense or lightweight aggregate Code for cavity block wall, minimum Sustainable 100mm blocks, with MONARFLOOR Homes BRIDGESTOP system Minimum 100mm cavity between leaves Nominal 8mm (minimum 6mm) Gyproc Soundcoat Plus Drylined with 12.5mm Separating walls Separating Gyproc WallBoard using the walls Separating DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for Robust Detail enhanced robustness and fixing capability England, Wales and Scotland

Refer to Flanking details pages 138 - 146 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 103 104 Technical Advice Centre Tel: 0115 945 6123

05 Separating floors 105

O5 Separating floors living safe and comfortable quiet, Creating apartments. adjoining between environments 05 Separating floors 106 performance levels. systems canhelpprovide solutionsfor separating floorstomeet regulatory andenhancedacoustic Discover more onlegislation England, throughout Wales andScotland andhowour inthissection, Separating floors 05 Legislation and guidance

England and Wales - national Building Regulations Approved Document E

Approved Document E (ADE) gives guidance on how to provide reasonable standards of sound insulation in dwellings and other residential buildings. It covers both new-build and refurbishment or conversion, and includes minimum standards of performance for separating floors. The standards below have applied for all new-build homes and purpose-built rooms for residential purposes since July 2004.

Where applicable Minimum airborne Maximum impact sound insulation sound transmission

(site test result) DnTw + Ctr (site test result) LnTw

Separating floors between new homes and purpose-built 45 dB 62 dB rooms for residential purposes

Separating floors between rooms created by a change 43 dB 64 dB of use or conversion

NB Following the devolution of powers in 31st December 2011, it is possible that separate Approved Documents will be published for Wales. Until such time, current guidance continues to apply.

Complying with the regulations In England and Wales, housebuilders can follow one of two routes to demonstrate compliance for new-build houses and apartments: – Using ‘Robust Detail’ constructions – Using manufacturers’ proprietary systems or ADE ‘Guidance Constructions’ and verifying by Pre-Completion Testing

Robust Detail constructions Robust Detail (RD) constructions can be used in new houses and apartments as an alternative to Pre-Completion Testing. British Gypsum versions of RD constructions can be found floors Separating within the construction details later in this section. If you are following the RD route, you must register each plot, with details of the details you intend to use, and pay a fee. You will then be given a registration certificate to hand to your building control authority before work starts.

If you are building to either the Code for Sustainable Homes, or EcoHomes, RDs may entitle you to additional credits under the Health and Wellbeing category – check the Robust Details Handbook for the most up-to-date details.

Email: [email protected] british-gypsum.com 107 05 Separating floors 108 Technical Advice Centre Tel: 0115 9456123

05

Legislation and guidance (cont’d)

England and Wales - national Building Regulations Approved Document E

Pre-Completion Testing Where appropriate Robust Details are not used, Test results only apply to the particular constructions tested, manufacturers’ proprietary systems, or Approved Document but are indicative of the performance of others of the same E Guidance Constructions can be used and verified by type, in the same development. Pre-Completion Testing. This is the only means of compliance allowed for rooms purpose-built for residential Once likely completion times are known, Building Control purposes and conversion or refurbishment projects. will ask for one set of tests on the first house, flat or residential room scheduled for completion in each group Pre-Completion Testing ensures the required performance or sub-group, regardless of development size. If the of separating wall and floor constructions is being achieved development is only a single home, it must be tested. on-site, prior to completion. It is not required for internal space division within dwellings – walls between living Failure in any one of the individual airborne of impact sound spaces in the same home, corridors, stairwells, or hallways. tests will result in failure of the set of tests. Appropriate remedial treatment must then be carried out to the If this route is chosen: satisfaction of Building Control, and will result in an increase – Separating constructions in 10% of all dwellings, or in testing rates until they are satisfied that the problem has construction types, must be tested been solved. – Tests should be carried out once the separating construction is complete, except for decoration. In the case of impact sound insulation testing, without any soft floor covering, such as carpet or foam-backed vinyl Separating floors Separating

Junctions Developers should ensure that all the guidance contained within this publication, and supporting regulations and legislation, are followed and should pay particular care with flanking construction and junctioning details. Poor detailing may prevent full design performance from being achieved on-site. Take care at junctions between the separating floor and external walls, other separating structures, penetrations and door openings. Pre-Completion Testing exposes poor flanking detail and inadequate separating floor specification. Good detailing and specification is essential to provide a margin of safety on-site.

For guidance see page 135 Flanking details

Where additional performance is needed either as an additional margin of safety or for higher quality developments, see our Standard plus and Superior solutions on pages 130-133.

Email: [email protected] british-gypsum.com 109 05 Separating floors 110 Technical Advice Centre Tel: 0115 9456123 – – rooms for residential and purposes conversions: remains the only means compliance of for purpose-built Post-Completion The apartments. Testing route, however, standards 5performance Section for new-build houses and Scotland can use three one of routes to comply with Since January 2012, housebuilders and in developers regulations the with Complying fabric. the from dissipatehelp moisture that components day, permeable the of with techniques pre-1919 built buildings of using construction parts or buildings -generally buildings *Traditional a change use of and conversions (traditional buildings*) homes or rooms createdSeparatingby between floors buildings*) traditional for residential and purposes conversions (not including purpose-built homes, new Separatingrooms between floors Where applicable buildings’*.‘traditional standardsThe now apply below for all separating constructions floor in new-build homes andor converted abuilding, of buildings,occupied and parts from attached to alevel that will threaten not the health occupants. of This was the first majorstandardsof review for more than 20 years.Its aim is to limitsound transmission from differently soundof insulation for separating in homes. floors versionA new Technical the of Domestic 5was published Handbook 2010, Section in October which increased the standards Scotland –Domestic Technical Handbook Section 5: Noise Legislation and guidance (cont’d) work starts. work to handcertificate to your buildingbefore control authority to use, and pay You afee. will then given be aregistration must register details each with plot, the of RD(s) you intend later in you are If this following section. the RD route, you foundconstructions can be within details the construction Post-Completion Testing. British Gypsum versions RD of inused houses new and as apartments an alternative to Since 2012, Robust Detail (RD) constructions can be constructions Detail Robust –

U U U Post-Completion Testing Post-Completion Testing sing ‘Other Constructions’ and by verifying sing ‘Example Constructions’ and by verifying sing ‘Robust constructions Detail’

(site test result) D (site result) test Minimum airborne airborne Minimum sound insulation insulation sound 56 dB 53 dB nTw

sound transmission transmission sound (site test result) L (site result) test Maximum impact impact Maximum 56 dB 58 dB nTw

05

Legislation and guidance (cont’d)

Scotland – Domestic Technical Handbook Section 5: Noise

Example constructions These are constructions developed to repeatedly achieve required design performance levels, if built right with correctly designed flanking details. Use of these constructions does not guarantee regulatory performance levels will be achieved, and the onus is therefore on the housebuilder to demonstrate compliance by Post-Completion Testing on site (see below).

Other constructions These include manufacturers’ proprietary solutions and new, or innovative, constructions not considered to be ‘Example Constructions’. Again, the onus is on the housebuilder to demonstrate compliance by Post-Completion Testing.

Post-Completion Testing Post-Completion Testing is carried out when the building is complete, with doors, access hatches and windows fitted. Impact testing of separating floors must be carried out before laying a bonded resilient floor covering, such as a carpet.

To achieve the required approval, homes should be tested as below:

Type of Construction Number of attached Number of tests for separating floors dwellings (flats or maisonettes)

New-build using 2-20 2 ‘Example Constructions’ 21-40 3

Over 40 1 extra for every 20 flats or maisonettes (or part thereof)

New-build using 2-10 2 ‘Other Constructions’ 11-20 3

21-30 4

Over 30 1 extra for every 10 flats or floors Separating maisonettes (or part thereof)

If a test fails due to the construction of the separating floor or associated flanking elements, other untested rooms may be affected. This will result in additional testing requirements, over and above those in the table above. It may be prudent to seek specialist advice to identify and remedy any problems.

Junctions Developers should ensure that all the guidance contained within this publication, and supporting regulations and legislation, are followed and should pay particular care with flanking construction and junctioning details. Poor detailing may prevent full design performance from being achieved on-site. Take care at junctions between the separating floor and external walls, other separating structures, penetrations and door openings. Post-Completion Testing exposes poor flanking detail and inadequate separating floor specification. Good detailing and specification are essential to provide a margin of safety on-site.

For guidance see page 135 Flanking details

Where additional performance is needed either as an additional margin of safety or for higher quality developments, see our Standard plus and Superior solutions on pages 130-133.

Email: [email protected] british-gypsum.com 111 05 System reference for separating floors

Solutions Build method Detail / Floor type Category Description Page Detail

These constructions are Timber Proprietary British Gypsum Timber joist with GypFloor SILENT and CasoLine MF incorporating acoustic hangers 116 British Gypsum Approved Approved System Systems which, provided England and Wales they are built correctly, have 1 the potential to achieve the Proprietary Timber joist with GypFloor SILENT and Gypframe RB1 Resilient Bar ceiling 116 minimum standards laid Conversions down in Approved Document E (England and Wales) for only separating floor constructions Proprietary Timber joist with GypFloor SILENT and existing lath and plaster ceiling 117 created by material change of use or conversion.

The following ‘Robust Detail’, Concrete E-FC-1 Robust Detail Pre-cast concrete planks with floating floor 118 ‘Guidance’ and ‘Example’ England and Wales constructions are capable E-FC-2 Reinforced in-situ concrete with floating floor 118 of meeting the minimum 2 standards laid down in E-FC-4 Pre-cast concrete planks with screed laid on IsoRubber resilient layer 120 Approved Document E (England and Wales) and E-FC-5 Pre-cast concrete planks with screed laid on YELOfon HD10+ resilient layer 120 Standard Technical Handbook Section performance 5 (Scotland) for separating E-FC-6 Beam and block floor with pre-cast or in-situ edge beams. Screed laid on Regupol E48 121 floors in new-build houses resilient layer system and apartments, purpose built rooms for residential E-FC-7 Beam and block floor with pre-cast or in-situ edge beam and floating floor treatment 121 purposes, and conversion projects. Robust Details, E-FC-9 Pre-cast concrete planks with directly applied screed and IsoRubber 122 however, offer proven sound E-FC-11 Pre-cast concrete planks with screed laid on Icopal-Monarfloor Tranquilt resilient layer 122 performance, and avoid the need for testing on site. E-FC-12 200mm pre-cast concrete planks with screed laid on Thermal Economics IsoRubber 123 Base HP3 resilient layer

E-FC-13 Pre-cast concrete planks with screed laid on InstaCoustic InstaLay 65 resilient layer 123

Floor type 1.1C Guidance Construction In-situ concrete slab with ceiling and soft covering 124 England and Wales Floor type 1.2B Pre-cast concrete planks with ceiling and soft covering 124

Floor type 2.1C In-situ concrete slab with ceiling and floating floor 125 Separating floors

Floor type 2A Example Construction Pre-cast concrete planks with screed laid on resilient layers and bonded resilient 126 Scotland floor cover

Floor type 2B Beam and block floor with pre-cast or in-situ edge beam and floating floor treatment 126

Timber E-FT-3 Robust Detail Metal web timber joists and floating floor treatment 127 England and Wales E-FT-6 Metal web timber joists and Cellecta ScreedBoard floating floor treatment 127

Floor type 3.1A Guidance Construction Timber joist with platform floor and independent ceiling 128 England and Wales

Floor type 3A Example Construction Timber solid joists and floating floor treatment 128 Scotland Floor type 3B Timber I-joists and floating floor treatment 129

112 Technical Advice Centre Tel: 0115 945 6123 05

Solutions Build method Detail / Floor type Category Description Page Detail

These constructions are Timber Proprietary British Gypsum Timber joist with GypFloor SILENT and CasoLine MF incorporating acoustic hangers 116 71 British Gypsum Approved Approved System Systems which, provided England and Wales they are built correctly, have the potential to achieve the Proprietary Timber joist with GypFloor SILENT and Gypframe RB1 Resilient Bar ceiling 116 72 minimum standards laid Conversions down in Approved Document E (England and Wales) for only separating floor constructions Proprietary Timber joist with GypFloor SILENT and existing lath and plaster ceiling 117 73 created by material change of use or conversion.

The following ‘Robust Detail’, Concrete E-FC-1 Robust Detail Pre-cast concrete planks with floating floor 118 74 ‘Guidance’ and ‘Example’ England and Wales constructions are capable E-FC-2 Reinforced in-situ concrete with floating floor 118 75 of meeting the minimum standards laid down in E-FC-4 Pre-cast concrete planks with screed laid on IsoRubber resilient layer 120 76 Approved Document E (England and Wales) and E-FC-5 Pre-cast concrete planks with screed laid on YELOfon HD10+ resilient layer 120 77 Standard Technical Handbook Section performance 5 (Scotland) for separating E-FC-6 Beam and block floor with pre-cast or in-situ edge beams. Screed laid on Regupol E48 121 78 floors in new-build houses resilient layer system and apartments, purpose built rooms for residential E-FC-7 Beam and block floor with pre-cast or in-situ edge beam and floating floor treatment 121 79 purposes, and conversion projects. Robust Details, E-FC-9 Pre-cast concrete planks with directly applied screed and IsoRubber 122 80 however, offer proven sound E-FC-11 Pre-cast concrete planks with screed laid on Icopal-Monarfloor Tranquilt resilient layer 122 performance, and avoid the 81 need for testing on site. E-FC-12 200mm pre-cast concrete planks with screed laid on Thermal Economics IsoRubber 123 82 Base HP3 resilient layer

E-FC-13 Pre-cast concrete planks with screed laid on InstaCoustic InstaLay 65 resilient layer 123 83 Separating floors Separating

Floor type 1.1C Guidance Construction In-situ concrete slab with ceiling and soft covering 124 84 England and Wales Floor type 1.2B Pre-cast concrete planks with ceiling and soft covering 124 85

Floor type 2.1C In-situ concrete slab with ceiling and floating floor 125 86

Floor type 2A Example Construction Pre-cast concrete planks with screed laid on resilient layers and bonded resilient 126 87 Scotland floor cover

Floor type 2B Beam and block floor with pre-cast or in-situ edge beam and floating floor treatment 126 88

Timber E-FT-3 Robust Detail Metal web timber joists and floating floor treatment 127 89 England and Wales E-FT-6 Metal web timber joists and Cellecta ScreedBoard floating floor treatment 127 90

Floor type 3.1A Guidance Construction Timber joist with platform floor and independent ceiling 128 91 England and Wales

Floor type 3A Example Construction Timber solid joists and floating floor treatment 128 92 Scotland Floor type 3B Timber I-joists and floating floor treatment 129 93

Email: [email protected] british-gypsum.com 113 05

System reference for separating floors

Solutions Build method Detail / Floor type Category Description Page Detail

Steel E-FS-2 Robust Detail UltraBEAM metal joists and floating floor treatment 129 94 England, Wales and Scotland

Standard Plus solutions Concrete E-FC-8 Robust Detail Pre-cast concrete planks with screed laid on resilient layers and bonded 130 95 provide performance over England and resilient floor cover and above the minimum Wales requirement. They allow a 3 margin of safety to reduce Timber E-FT-1 and V-FT-1 Robust Detail Timber I-joists and floating floor treatment 131 96 the chance of site test failure England, Wales Standard due to local installation or E-FT-2 and V-FT-2 and Scotland Timber solid joists and floating floor treatment 131 97 detailing issues. plus E-FT-4 Robust Detail 132 98 performance England and Wales E-FT-5 132 99

Superior solutions have Concrete E-FC-10 Robust Detail In-situ concrete slab with IsoRubber Top 133 100 the potential to exceed England and Wales the regulatory acoustic performance requirement by Steel / Concrete E-FS-1 and V-FS-1 Robust Detail Steel deck, in-situ concrete and floating floor treatment 133 101 4 5 dB or more. They reduce the Composite England, Wales chances of site test failure and Scotland Superior and are the perfect choice for high performing or performance prestige developments. Separating floors

114 Technical Advice Centre Tel: 0115 945 6123 05

Solutions Build method Detail / Floor type Category Description Page Detail

Steel E-FS-2 Robust Detail UltraBEAM metal joists and floating floor treatment 129 94 England, Wales and Scotland

Standard Plus solutions Concrete E-FC-8 Robust Detail Pre-cast concrete planks with screed laid on resilient layers and bonded 130 95 provide performance over England and resilient floor cover and above the minimum Wales requirement. They allow a margin of safety to reduce Timber E-FT-1 and V-FT-1 Robust Detail Timber I-joists and floating floor treatment 131 96 the chance of site test failure England, Wales Standard due to local installation or E-FT-2 and V-FT-2 and Scotland Timber solid joists and floating floor treatment 131 97 detailing issues. plus E-FT-4 Robust Detail 132 98 performance England and Wales E-FT-5 132 99

Superior solutions have Concrete E-FC-10 Robust Detail In-situ concrete slab with IsoRubber Top 133 100 the potential to exceed England and Wales the regulatory acoustic performance requirement by Steel / Concrete E-FS-1 and V-FS-1 Robust Detail Steel deck, in-situ concrete and floating floor treatment 133 101 5 dB or more. They reduce the Composite England, Wales chances of site test failure and Scotland Superior and are the perfect choice for high performing or performance prestige developments. Separating floors Separating

Email: [email protected] british-gypsum.com 115 05 Construction details – Conversions only 1 Timber joist floors

Timber joist with PSR C106026 GypFloor SILENT and 71 CasoLine MF incorporating acoustic hangers

GypFloor SILENT comprising 21mm Rw+Ctr 55 dB

Lnw 51 dB chipboard with 19mm Gyproc Plank Rw 63 dB on Gypframe SIF Floor Channels

60 mins BS Timber joists at 450mm or 600mm centres 100mm Isover Acoustic Partition Roll (APR 1200) in the cavity

CasoLine MF ceiling lining, incorporating Gypframe Acoustic Hangers, suspended beneath joists to give a 277mm cavity lined with a double layer of 15mm Gyproc SoundBloc British Gypsum Approved System England, Wales and Scotland Pre-Completion Testing required

Timber joist with PSR C204001 GypFloor SILENT and 72 Gypframe RB1 Resilient Bar ceiling

GypFloor SILENT comprising 21mm R +Ctr 51 dB w chipboard with 19mm Gyproc Plank Lnw 55 dB

Separating floors on Gypframe SIF Floor Channels Rw 63 dB 100mm Isover Acoustic Partition Roll 60 mins BS (APR 1200) in the cavity Gypframe RB1 Resilient at 450mm centres to underside of joists lined with an inner layer of 19mm Gyproc Plank and outer layer of 12.5mm Gyproc SoundBloc

British Gypsum Approved System England and Wales Pre-Completion Testing required

116 Technical Advice Centre Tel: 0115 945 6123 05 Construction details – Conversions only (cont’d) 1 Timber joist floors

Timber joist with PSR G104032 GypFloor SILENT and existing 73 lath and plaster ceiling

GypFloor SILENT comprising 21mm t&g floor boarding with 19mm R +Ctr 43 dB w Gyproc Plank on Gypframe SIF Lnw 63 dB Rw 54 dB Floor Channels Cavity bridged between joists 60 mins BS (minimum width 50mm) by 12.5mm Glasroc F MULTIBOARD resting on 100mm wide x 12.5 Glasroc F MULTIBOARD strips, screw-fixed to each joist flush with the bottom edge British Gypsum Approved System 100mm Isover Acoustic Partition Roll (Test and Declare only)1 (APR 1200) in the cavity England and Wales Existing lath and plaster ceiling Pre-Completion Testing required

1 Test and Declare option Where it is necessary to retain the existing features in a building, e.g. ornate ceiling in a historic building it may not be possible to achieve the stipulated regulatory standard. Therefore, it is permitted to test on site and declare the performance achieved subject to Building Control acceptance. Separating floors Separating

Email: [email protected] british-gypsum.com 117 05 Construction details – Standard performance 2 Concrete floors

E-FC-1 Pre-cast concrete 74 planks with floating floor A Robust Detail performing floating floor system which must achieve a minimum lab performance of rd Δ RD 17 dB impact Directly applied minimum 40mm sand / cement screed Minimum 150mm pre-cast concrete floor plank with minimum surface mass of 300kg/m2

CasoLine MF or GypLyner UNIVERSAL ceiling providing minimum 150mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard or GypLyner UNIVERSAL ceiling providing minimum 75mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard TEN or 12.5mm Robust Detail Gyproc SoundBloc England and Wales

Refer to Flanking details pages 166 - 167

E-FC-2 Reinforced in-situ 75 concrete with floating floor A Robust Detail performing floating floor system which must achieve a minimum lab performance of rd Δ RD 17 dB impact Minimum 250mm depth in-situ Separating floors concrete floor slab with minimum density of 2400kg/m3 without screed or Minimum 200mm depth in-situ concrete floor slab, minimum density 2400kg/m3 with minimum 40mm screed directly applied

CasoLine MF or GypLyner UNIVERSAL ceiling providing minimum 150mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard or GypLyner UNIVERSAL ceiling providing minimum 75mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard TEN or 12.5mm Robust Detail Gyproc SoundBloc England and Wales

Refer to Flanking details page 160

118 Technical Advice Centre Tel: 0115 945 6123 05 Construction details – Standard performance (cont’d) 2 Robust details - New-build

Floating floor treatments for E-FC-1, E-FC-2, E-FC-7, E-FS-1, E-FS-2

All floating floor treatments:

– Must achieve a minimum laboratory performance of rd Δ Lw 17 dB impact – Must be installed in accordance with the manufacturers’ instructions – Require minimum 5mm foamed polyethylene resilient flanking strips around the perimeter of the flooring board to isolate floor from walls and skirting

FFT1 - Resilient composite deep batten system – Minimum 18mm t&g flooring board – Resilient composite deep battens 70mm1 – Ensure any services do not bridge the resilient layer (min.) – Battens may have the resilient layer at the top or bottom – 20mm levelling screed required with E-FC-7 – 25mm Isover Acoustic Partition Roll (APR 1200) required with E-FS-2

FFT2 - Resilient cradle and batten system – Minimum 18mm t&g flooring board – Cradle and batten

50mm1 – Ensure any services do not bridge the resilient layer (min.) – 25mm Isover Acoustic Partition Roll (APR 1200) 10mm (min.) required with E-FC-7

FFT3 - Resilient composite standard batten system – Minimum 18mm t&g flooring board – Resilient composite standard battens 45mm1 – Ensure any services do not bridge the resilient layer (min.) – Battens may have the resilient layer at the top or bottom floors Separating – 20mm levelling screed required with E-FC-7

FFT4 - Resilient overlay platform floor system – Proprietary platform system inclusive of resilient layer – Greater than equal to 16kg/m2 mass per unit area (Isover RD Acoustic Slab) – No services to be installed in the floor system – Cannot be used with E-FC-7

FFT5 - Resilient overlay shallow platform system – Minimum 9mm t&g flooring board – Resilient layer to be bonded to flooring board – No services to be installed in the floor system – Cannot be used with E-FC-7

1 Void dimension indicated is when floor is loaded to 25kg/m2.

Email: [email protected] british-gypsum.com 119 05 Construction details – Standard performance (cont’d) 2 Concrete floors

E-FC-4 Pre-cast concrete planks with screed laid on 76 IsoRubber resilient layer

Minimum 65mm sand / cement screed, or minimum 40mm proprietary screed RD (nominal 80kg/m2 mass per unit area) 6mm IsoRubber layer with IsoEdge flanking strip Minimum 150mm pre-cast concrete floor plank with minimum surface mass of 300kg/m2

CasoLine MF or GypLyner UNIVERSAL ceiling providing minimum 150mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard (to be used for 150mm minimum depth concrete planks) or CasoLine MF or GypLyner UNIVERSAL ceiling providing minimum 100mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard (only to Robust Detail be used for 200mm minimum depth England and Wales concrete planks)

Refer to Flanking details pages 166 - 167

E-FC-5 Pre-cast concrete planks with screed laid on YELOfon 77 HD10+ resilient layer

Minimum 65mm sand / cement screed

RD YELOfon HD10+ with E-strip perimeter edging and J-strip tape for jointing Separating floors Minimum 150mm pre-cast concrete floor plank with minimum surface mass of 300kg/m2

CasoLine MF or GypLyner UNIVERSAL ceiling providing minimum 150mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard (to be used for 150mm minimum depth concrete planks) or CasoLine MF or GypLyner UNIVERSAL ceiling providing minimum 100mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard (only to Robust Detail be used for 200mm minimum depth England and Wales concrete planks)

Refer to Flanking details pages 166 - 167

120 Technical Advice Centre Tel: 0115 945 6123 05 Construction details – Standard performance (cont’d) 2 Concrete floors

E-FC-6 Beam and block floor with pre-cast or in-situ edge 78 beams. Screed laid on Regupol E48 resilient layer system RD Minimum 65mm sand / cement screed 8mm Regupol E48 0.2mm (minimum) waterproof membrane Beam and block, minimum 100mm thick dense aggregate infill blocks, minimum 50mm concrete topping, minimum 300kg/m2 combined mass per unit area

CasoLine MF or GypLyner UNIVERSAL ceiling providing minimum 300mm between top of beam and ceiling board, 50mm Isover Acoustic Partition Robust Detail Roll (APR 1200) in the ceiling cavity, England and Wales lined with a single layer of 12.5mm Gyproc WallBoard TEN Refer to Flanking details pages 166 - 167

E-FC-7 Beam and block floor with pre-cast or in-situ 79 edge beam and floating floors Separating floor treatment

RD A Robust Detail performing floating floor system which must achieve a minimum lab performance of rd Δ 17 dB impact Beam and block, minimum 100mm thick dense aggregate infill blocks, minimum 50mm concrete topping, minimum 300kg/m2 combined mass per unit area

CasoLine MF or GypLyner UNIVERSAL ceiling providing minimum 300mm between top of beam and ceiling board, 25mm Isover Acoustic Partition Roll (APR 1200) in the ceiling cavity, lined with a single layer of 12.5mm Robust Detail Gyproc WallBoard TEN England and Wales

Refer to Flanking details pages 166 - 167

Email: [email protected] british-gypsum.com 121 05 Construction details – Standard performance (cont’d) 2 Concrete floors

E-FC-9 Pre-cast concrete planks with directly applied 80 screed and IsoRubber

3mm Thermal Economics IsoRubber floor covering (bonded with IsoBond adhesive) RD Minimum 65mm sand / cement screed, or minimum 40mm proprietary screed (nominal 80kg/m2 mass per unit area) Minimum 150mm pre-cast concrete floor planks with minimum surface mass of 300kg/m2

CasoLine MF or GypLyner UNIVERSAL ceiling providing: minimum 150mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard (150mm minimum depth concrete planks) or minimum 100mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard (200mm minimum depth concrete planks) Robust Detail England and Wales

Refer to Flanking details pages 166 - 167

E-FC-11 Pre-cast concrete planks with screed laid 81 on Icopal-MONARFLOOR TRANQUILT resilient layer

RD Minimum 65mm sand / cement screed, or minimum 40mm proprietary screed 2

Separating floors (nominal 80kg/m mass per unit area) 10mm Icopal-MONARFLOOR TRANQUILT resilient layer Minimum 150mm pre-cast concrete floor planks with minimum mass per unit area of 300kg/m2

CasoLine MF or GypLyner UNIVERSAL ceiling providing: minimum 150mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard (150mm minimum depth concrete planks) or minimum 100mm ceiling void, lined with a single layer of 12.5mm Robust Detail Gyproc WallBoard (200mm minimum England and Wales depth concrete planks)

Refer to Flanking details pages 166 - 167

122 Technical Advice Centre Tel: 0115 945 6123 05 Construction details – Standard performance (cont’d) 2 Concrete floors

E-FC-12 Pre-cast concrete with screed laid on 82 Economics IsoRubber Base HP3 resilient layer

RD Minimum 65mm sand / cement screed, or minimum 40mm proprietary screed (nominal 80kg/m2 mass per unit area) 3mm IsoRubber Base HP3 layer with IsoEdge flanking strip Minimum 150mm pre-cast concrete floor planks with minimum mass per unit area of 300kg/m2

CasoLine MF or GypLyner UNIVERSAL ceiling providing: minimum 150mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard (150mm minimum depth concrete planks) or minimum 100mm ceiling void, lined with a single layer of 12.5mm Robust Detail Gyproc WallBoard (200mm minimum England and Wales depth concrete planks)

Refer to Flanking details pages 166 - 167

E-FC-13 Pre-cast concrete planks with screed laid on 83 InstaCoustic Instalay 65 floors Separating resilient layer

RD Minimum 65mm sand / cement screed, or minimum 40mm proprietary screed (nominal 80kg/m2 mass per unit area) InstaLay 65 layer with InstaLay 65 edge strip Minimum 150mm pre-cast concrete floor planks with minimum mass per unit area of 300kg/m2

CasoLine MF or GypLyner UNIVERSAL ceiling providing: minimum 150mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard (150mm minimum depth concrete planks) or minimum 100mm ceiling void, lined with a single layer of 12.5mm Robust Detail Gyproc WallBoard (200mm minimum England and Wales depth concrete planks)

Refer to Flanking details pages 166 - 167

Email: [email protected] british-gypsum.com 123 05 Construction details – Standard performance (cont’d) 2 Concrete floors

In-situ concrete slab with ceiling and soft covering 84 (floor type 1.1C)

Bonded soft floor covering essential

Guidance In-situ concrete slab, minimum Construction surface mass 365kg/m2 including any bonded screed

GypLyner UNIVERSAL ceiling providing minimum 25mm ceiling void full-fill with Isover Acoustic Partition Roll (APR 1200) in the cavity or CasoLine MF ceiling providing minimum 100mm ceiling void full-fill with Isover Acoustic Partition Roll (APR 1200) in the cavity, lined with a single layer of 12.5mm Gyproc WallBoard TEN or 12.5mm Gyproc SoundBloc Guidance Construction England and Wales Pre-Completion Testing required

Refer to Flanking details page 160

Pre-cast concrete planks with ceiling and soft 85 covering (floor type 1.2B)

Pre-cast concrete planks, minimum surface mass 365kg/m2 including any Guidance Construction bonded screed

Separating floors All floor joints fully grouted. Bonded soft floor covering essential Gypframe RB1 Resilient Bar on timber battens, full-fill with Isover Acoustic Partition Roll (APR 1200) in the cavity, lined with a single layer of 12.5mm Gyproc WallBoard TEN or 12.5mm Gyproc SoundBloc

Guidance Construction England and Wales Pre-Completion Testing required

Refer to Flanking details pages 166 - 167

124 Technical Advice Centre Tel: 0115 945 6123 05 Construction details – Standard performance (cont’d) 2 Concrete floors

In-situ concrete slab with ceiling and floating floor 86 (floor type 2.1C)

Floating floor treatment essential

Guidance In-situ concrete slab, minimum Construction surface mass 300kg/m2 including any bonded screed

GypLyner UNIVERSAL ceiling providing minimum 25mm ceiling void full-fill with Isover Acoustic Partition Roll (APR 1200) in the cavity or CasoLine MF ceiling providing minimum 100mm ceiling void full-fill with Isover Acoustic Partition Roll (APR 1200) in the cavity lined with a single layer of 12.5mm Gyproc WallBoard TEN or 12.5mm Gyproc SoundBloc Guidance Construction England and Wales Pre-Completion Testing required

Refer to Flanking details page 160 Separating floors Separating

Email: [email protected] british-gypsum.com 125 05 Construction details – Standard performance (cont’d) 2 Concrete floors

Pre-cast concrete floor slabs 87 (floor type 2A) Minimum 3mm bonded resilient floor covering

Example 65mm sand cement screed Construction Isolating layer (number 2) minimum 5mm foamed polyethylene layer (30-36kg/m3) Isolating layer (number 1) minimum 25mm mineral wool batt (140kg/m3), e.g. Isover RD Floor Slab, or 25mm expanded or extruded polystyrene insulation board 200mm pre-cast concrete floor slabs (minimum weight 365kg/m2) 150mm ceiling void

CasoLine MF ceiling Example Construction Scotland 12.5mm Gyproc SoundBloc or Gyproc WallBoard TEN Post-Completion Testing required

Refer to Flanking details pages 166 - 167

Pre-cast concrete floor slabs 88 (floor type 2B) 18mm (minimum) t&g chipboard walking surface (minimum weight 15kg/m2) Example Construction Timber battens with resilient strip

Separating floors attached to the underside 25mm Isover Acoustic Partition Roll (APR 1200) 50mm screed 200mm pre-cast concrete floor slabs 150mm deep ceiling void

CasoLine MF ceiling 12.5mm Gyproc SoundBloc or Gyproc WallBoard TEN

Example Construction Scotland Pre-Completion Testing required

Refer to Flanking details pages 166 - 167

126 Technical Advice Centre Tel: 0115 945 6123 05 Construction details – Standard performance (cont’d) 2 Timber joist floors

E-FT-3 Mitek Posi-Joist or Prestoplan PresWeb metal 89 web joists with floating floor

A sub-deck of 18mm OSB and an FFT1 Robust Detail approved floating RD floor system Minimum 253mm Posi-Joist or PresWeb metal web joists 100mm Isover Acoustic Partition Roll (APR 1200) in the joist cavity Gypframe RB1 Resilient Bar ceiling at 400mm centres, lined with double layer of 15mm Gyproc SoundBloc or Gypframe RB1 Resilient Bar ceiling at 400mm centres, lined with an inner layer of 19mm Gyproc Plank and an outer layer of 12.5mm Gyproc WallBoard TEN or 12.5mm Gyproc SoundBloc Robust Detail England and Wales

Refer to Flanking details pages 168 - 169

E-FT-6 Metal webjoists and Cellecta ScreedBoard 28 90 floating floor floors Separating

Cellecta ScreedBoard 28 RD A sub deck of 18mm OSB 253mm (minimum) metal web joists (only the following metal web joists may be used; MiTek Posi-Joist, Prestoplan PresWeb, WOLF easi-joist, Gang Nail ecojoist, ITW Alpine SpaceJoist) 100mm Isover Acoustic Partition Roll (APR 1200) in the joist cavity Gypframe RB1 Resilient Bar ceiling at 400mm centres, lined with an inner layer of 19mm Gyproc Plank and an outer layer of 12.5mm Gyproc WallBoard TEN or 12.5mm Gyproc SoundBloc or Double layer of 15mm Gyproc SoundBloc can be used Robust Detail CasoLine MF or GypLyner UNIVERSAL ceiling England and Wales providing minimum 150mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard Refer to Flanking details pages 168 - 169

Email: [email protected] british-gypsum.com 127 05 Construction details – Standard performance (cont’d) 2 Timber joist floors

Timber joist with platform floor and independent 91 ceiling (floor type 3.1A)

Walking surface of 18mm t&g chipboard, bonded to 19mm Guidance Construction Gyproc Plank Resilient layer of 25mm Isover Sound Deadening Floor Slab laid over 15mm OSB board to top of joists Timber joists at 450mm centres or 600mm centres 100mm Isover Acoustic Partition Roll (APR 1200) in the ceiling cavity Independent timber joist ceiling (a clearance of at least 100mm should be left between the top of the ceiling joists and the underside of the base floor) lined with a double layer of Guidance Construction 12.5mm Gyproc WallBoard TEN or England and Wales a double Gyproc SoundBloc Pre-Completion Testing required

Refer to Flanking details pages 168 - 169

Timber solid joists 92 (floor type 3A) 18mm (minimum) t&g chipboard walking surface (minimum density 600kg/m3) Example Construction 19mm Gyproc Plank

Separating floors Floating Floor Treatment that achieves: 60 mins BS rd Δ Rw >17 dB; rd Δ Rw+Ctr >13 dB; and

rd Δ Lw >16 dB 65mm Isover Acoustic Partition Roll (APR 1200) 15mm timber deck Minimum 220mm timber solid joists at maximum 400mm centres 100mm Isover Acoustic Partition Roll (APR 1200) Gypframe RB1 Resilient Bar Example Construction Scotland Double layer of 15mm Gyproc SoundBloc Pre-Completion Testing required

Refer to Flanking details pages 168 - 169

128 Technical Advice Centre Tel: 0115 945 6123 05 Construction details – Standard performance (cont’d) 2 Timber joist floors

Timber I joists 93 (floor Type 3B) 18mm (minimum) t&g chipboard walking surface (minimum density 600kg/m3) Example Construction 19mm Gyproc Plank Floating Floor Treatment that achieves:

rd Δ Rw >17 dB; rd Δ Rw+Ctr >13 dB; and

rd Δ Lw >16 dB 25mm Isover Acoustic Partition Roll (APR 1200) 15mm timber deck Minimum 240mm timber I joists at maximum 480mm centres 100mm Isover Acoustic Partition Roll (APR 1200) Example Construction Gypframe RB1 Resilient Bar at Scotland 400mm centres Pre-Completion Testing required Double layer of 15mm Gyproc SoundBloc Refer to Flanking details pages 168 - 169

E-FS-2 UltraBEAM metal joist with floating floor 94 floors Separating A Robust Detail performing floating floor treatment which must achieve a minimum lab performance of RD 17 dB impact Minimum sub-deck of 22mm wood based board (minimum density 600kg/m3) Minimum 225mm UltraBEAM metal joists 100mm Isover Acoustic Partition Roll (APR 1200) in the joist cavity Gypframe RB1 Resilient Bar ceiling at 450mm centres, lined with an inner layer of 19mm Gyproc Plank and an outer layer of 12.5mm Gyproc WallBoard TEN or 12.5mm Gyproc SoundBloc or double Robust Detail layers of 15mm Gyproc SoundBloc can England and Wales be used

Refer to Flanking details pages 168 - 169

Email: [email protected] british-gypsum.com 129 05 Construction details – Standard plus performance 3 Concrete floors

E-FC-8 Pre-cast concrete planks with screed laid on 95 resilient layers and bonded resilient floor cover

RD Minimum 4.5mm bonded resilient floor covering Minimum 65mm sand / cement screed Hea 2 or minimum 40mm proprietary screed 2 1 (nominal 80 kg/m mass per unit area) Credit 5mm foamed polyethylene layer (30 - 36 kg/m2) Code for 25mm mineral wool batt (140 kg/m3 Sustainable mass per unit area) or 25mm EPS Homes (flooring grade SD) or extruded polystyrene insulation Minimum 150mm pre-cast concrete floor planks with minimum surface mass of 300kg/m2

CasoLine MF or GypLyner UNIVERSAL ceiling providing minimum 150mm ceiling void, lined with a single layer of 12.5mm Gyproc SoundBloc or 12.5mm Gyproc WallBoard TEN (to be specified for 150mm minimum depth concrete planks) or CasoLine MF or GypLyner UNIVERSAL ceiling providing minimum 100mm ceiling void, lined with a single layer of 12.5mm Gyproc SoundBloc or 12.5mm Gyproc WallBoard TEN (to be specified for 200mm minimum depth concrete planks) Robust Detail England and Wales Separating floors

Refer to Flanking details pages 166 - 167

130 Technical Advice Centre Tel: 0115 945 6123 05 Construction details – Standard plus performance (cont’d) 3 Timber joist floors

E-FT-1 and V-FT-1 Engineered timber I joist 96 with floating floor

A sub-deck of 15mm OSB and an FFT1 Robust Detail approved floating RD floor system Minimum 240mm depth engineered Hea 2 timber I joist 100mm Isover Acoustic Partition Roll 1 (APR 1200) in the joist cavity Credit Gypframe RB1 Resilient Bar ceiling Code for at 400mm centres, lined with an Sustainable inner layer of 19mm Gyproc Plank Homes and an outer layer of 12.5mm Gyproc WallBoard TEN or 12.5mm Gyproc SoundBloc or Double layer of 15mm Gyproc SoundBloc can be used Robust Detail England, Wales and Scotland

Refer to Flanking details pages 168 - 169

E-FT-2 and V-FT-2 Solid timber joist with floating floor 97 floors Separating A sub-deck of 15mm OSB and an FFT1 Robust Detail approved floating floor system RD Solid timber joists (minimum 220mm) at maximum 400mm centres Hea 2 100mm Isover Acoustic Partition Roll (APR 1200) in the joist cavity 1 Credit Gypframe RB1 Resilient Bar ceiling at 400mm centres, lined with an Code for inner layer of 19mm Gyproc Plank Sustainable and an outer layer of 12.5mm Homes Gyproc WallBoard or Double layer of 15mm Gyproc SoundBloc can be used

Robust Detail England, Wales and Scotland

Refer to Flanking details pages 168 - 169

Email: [email protected] british-gypsum.com 131 05 Construction details – Standard plus performance (cont’d) 3 Timber joist floors

E-FT-4 Finn joists with Gyvlon 98 SoundBar screed 40mm Gyvlon SoundBar screed Minimum 500 gauge polythene Hea 2 34mm Finnforest SoundBar board Minimum 15mm wood based board 1 (minimum density 600kg/m3) Credit 220mm Finnjoists Code for 100mm Isover Acoustic Partition Roll Sustainable (APR 1200) in the joist cavity Homes Gypframe RB1 Resilient Bar ceiling, at 400mm centres, lined with a double layer of 15mm Gyproc SoundBloc

GypLyner UNIVERSAL ceiling, providing a minimum 100mm ceiling void, lined with a single layer of 12.5mm Gyproc WallBoard Robust Detail England and Wales

Refer to Flanking details pages 168 - 169

E-FT-5 Engineered timber I joist with Cellecta 99 ScreedBoard floating floor

Cellecta ScreedBoard floating floor

Hea 2 18mm thick timber deck Minimum 240mm timber I joists Separating floors 1 100mm Isover Acoustic Partition Roll Credit (APR 1200) Code for Gypframe RB1 Resilient Bar ceiling Sustainable at 400mm centres, lined with an inner Homes layer of 19mm Gyproc Plank and an outer layer of 12.5mm Gyproc WallBoard TEN or 12.5mm Gyproc SoundBloc or Double layer of 15mm Gyproc SoundBloc can be used

Robust Detail England and Wales

Refer to Flanking details pages 168 - 169

132 Technical Advice Centre Tel: 0115 945 6123 05 Construction details – Standard plus performance (cont’d) 4 Concrete floors

E-FC-10 In-situ concrete slab 100 with IsoRubber 3mm IsoRubber floor covering (bonded with IsoBond adhesive)

RD Minimum 175mm depth in-situ concrete floor slab, with minimum density 2400kg/m3

CasoLine MF or GypLyner UNIVERSAL Hea 2 ceiling providing 150mm ceiling void, lined with a single layer of 12.5mm 3 Gyproc SoundBloc Credits or 12.5mm Gyproc WallBoard TEN

Code for Sustainable Homes

Robust Detail England and Wales

ReferRefer to Flanking to Flanking details details pages page 000 160 - 000

E-FS-1 and V-FS-1 In-situ concrete on metal decking 101 with floating floor floors Separating

A Robust Detail performing floating floor system which must achieve RD a minimum lab performance of 17 dB impact Minimum 80mm concrete cover at shallowest point, minimum 130mm at Hea 2 deepest point of metal deck In-situ concrete slab, minimum density 3 of 2200kg/m3, supported on a profiled Credits metal deck

Code for CasoLine MF or GypLyner UNIVERSAL Sustainable ceiling providing minimum 300mm Homes from the concrete floor surface to the underside of the ceiling, and lined with a single layer of 12.5mm Gyproc WallBoard TEN Robust Detail or 12.5mm Gyproc SoundBloc England, Wales and Scotland

Email: [email protected] british-gypsum.com 133

06

Flanking details

Addressing the performance of individual O6separating wall and floor constructions, and the details Flanking flanking sound paths formed by the junctions between them.

135 06 Flanking details

Good design and installation practice should be followed to ensure the specified acoustic performance is achieved on site. This section gives you the design principles to eliminate or minimise flanking sound transmission. Find out more information on the interface between commonly specified details within residential construction. Flanking details

136 06 Flanking details 137 ypsum.com british-g . White Book

Email: [email protected] * The handbook also gives guidance on which Robust Detail separating floorsand walls can usedbe apartments.in For the full comprehensive Robust Detail construction details, please refer to the latest Robust Details Handbook, or for for or Handbook, Details Robust latest the to refer please construction Detail details, Robust comprehensive full For the The to refer please details, Gypsum proprietary British This section is not intended to fully describe the wall and floor specifications, specifications, floor and wall the describe fully to intended not is section This of a selection between interface the of principles the show to but commonly specifiedelements. Both national Building Regulations Approved Document E and Robust Detail construction details contain information to to information contain construction Detail details Robust E and Approved Document Regulations Building Both national formedthe by paths sound flanking the and floorconstructions, and wall separating performance of individual the address information. of that of examples number a small provides chapter This elements. betweenjunctions separating these Construction meeting national Building Regulation standards is of little use if sound energy can reach adjacent rooms or or rooms adjacent of little energy reach is if can sound use standards Regulation Building national Construction meeting resistance. with least paths sound byhomes taking Flanking details For Robust Details compliance, reference to the flanking details given in the Robust Detail handbook must followed.* be handbook Robust Detail the in given details flanking the to reference compliance, Details For Robust demanded. being Testing Pre-Completion to lead may advice design this follow to Failure In all cases, good design and installation practice should be followed. It is imperative that measures to eliminate or minimise minimise or eliminate to measures that imperative It be is practice followed. should installation and cases, gooddesign all In correctly products installed builder. the that by are and stage design the at considered are transmission sound flanking not Regulations Building of national requirements the performance and of acoustic limitation to lead so do may to Failure met. being 06 Cavity masonry walls

Flanking details 102 - 146 are taken from Robust Detail construction methods, typically E-WM-1 and E-WM-20. For further information, please refer to the Robust Details handbook or visit www.robustdetails.com

E -WM-1 External wall Plan junction 102 1 1 Masonry outer leaf 2 2 External wall cavity 3 (minimum 50mm) 3 Inner leaf where there is no separating floor, e.g. for houses – Minimum 100mm concrete 4 block 1350kg/m3 to 1600kg/m2 or 1850kg/m3 to 2300kg/m3 or aircrete block 450kg/m3 to 800kg/m3 – Internal finish 13mm Thistle plaster or 12.5mm Gyproc WallBoard or Gyproc ThermaLine laminate Inner leaf where there is a separating floor, e.g. for flats / apartments – If using a Robust Detail floor, check that wall and floor are compatible 4 Close cavity with an Isover Cavity Barrier unless it is fully filled with non combustible insulation – Tooth or tie walls together

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options Flanking details

138 Technical Advice Centre Tel: 0115 945 6123 06

Cavity masonry walls (cont’d)

Internal floor junction – Section timber floor supported 103 on joist hangers

1 Floor to comply with Building Regulations Requirement E2

1

Refer to pages 51 - 104 Refer to pages 105 - 134

E-WM-1 Internal floor Section 104 junction 1 Floor to comply with national Building Regulations Approved Document E clause E2 2 Internal floors should not be 1 continuous between dwellings 2 Floor construction – Timber joists built in with all voids around the joist filled

with mortar. The joint interface details Flanking between the joist and the mortar sealed with flexible sealant (refer to Robust Details) – Beam and block floor with all voids filled with mortar – Concrete planks with all voids between planks and blockwork filled with mortar or flexible sealant

Refer to pages 51 - 104 Refer to pages 105 - 134

Email: [email protected] british-gypsum.com 139 06

Cavity masonry walls (cont’d)

E-WM-1 Separating floor Section junction 105 1 1 Plaster complete wall surface 2 Minimum 5mm resilient flanking 2 strip between walking surface and wall lining 3 3 Concrete planks with all voids between planks and 4 blockwork filled with mortar or flexible sealant 4 Separating floor must not be continuous between dwellings Separating floor – If using a Robust Detail floor, check that wall and floor are compatible

Refer to pages 51 - 104 Refer to pages 105 - 134

E-WM-1 Roof junction – Section pitched roof without 1 106 room-in-the-roof

1 Junction between separating wall and roof filled with Isover mineral wool 2 Cavity masonry separating wall 2 continuous to underside of roof covering External wall cavity closed at eaves level with a suitable flexible material, e.g. mineral wool. If a rigid material is used, then it should only 3 be bonded to one leaf 3 Minimum 100mm Isover Acoustic

Flanking details Partition Roll (APR 1200) mineral wool insulation (between ceiling joists), subject to thermal performance requirements

Refer to pages 51 - 104 Refer to pages 105 - 134

140 Technical Advice Centre Tel: 0115 945 6123 06

Cavity masonry walls (cont’d)

E-WM-1 Ground floor junction Section 107 1 Plaster complete wall surface down to finished floor level 1 2 Ground floor not continuous between dwellings 3 Ground floor construction

– Timber joists built in with all 2 voids around the joists filled with mortar. The joint interface 3 between the joist and the mortar sealed with flexible sealant – Beam and block floor with all 225mm 4 (min.) voids filled with mortar – Concrete planks with all voids between planks and blockwork filled with mortar or flexible sealant – Ground bearing slab 4 Cavity separating wall continuous to foundation, cavity fill may be provided below minimum clear cavity indicated. Continuous raft foundations between dwellings are not acceptable. Solid walls which support separating walls are only acceptable where each ground floor (not timber joists) is built into one side of the separating wall and breaks the vertical continuation of the wall and the minimum clear cavity indicated is maintained.

Refer to pages 51 - 104 Refer to pages 105 - 134 Flanking details Flanking

Email: [email protected] british-gypsum.com 141 06

Cavity masonry walls (cont’d)

E-WM-1 Roof junction – Section pitched roof with 1 108 room-in-the-roof 2 1 Junction between separating wall and roof filled with Isover 3 mineral wool 2 Minimum 100mm Isover Frame Batt 35 mineral wool insulation subject to thermal performance requirement 3 One layer of Gyproc ThermaLine 4 laminate, and one layer of 15mm Gyproc WallBoard subject to thermal performance requirements or Two layers of 12.5mm Gyproc WallBoard 4 Masonry cavity separating wall continuous to underside of roof covering External wall cavity closed at eaves level with a suitable flexible material, e.g. mineral wool. If a rigid material is used, then it should only be bonded to one leaf

Refer to pages 51 - 104 Refer to pages 105 - 134

E-WM-20 Internal floor Section junction – timber floor 109 supported on joist hangers 1

1 100mm Isover RD Party Wall Roll 2 Floor to comply with national 2 Building Regulations Approved Document E clause E2 3 Continuous horizontal ribbon of adhesive

3 Replace wall lining with 12.5mm Gyproc Habito for enhanced robustness and fixing capability Flanking details

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

142 Technical Advice Centre Tel: 0115 945 6123 06

Cavity masonry walls (cont’d)

E-WM-20 External Plan wall junction 110 1 1 Masonry outer leaf 2 3 2 Minimum 50mm External wall cavity 3 Inner leaf where there is no separating floor, e.g for houses 5 – Minimum 100mm concrete block 1350kg/m3 to 1600kg/m2 4 or aircrete block 450kg/m3 to 800kg/m3 – Internal finish 13mm Thistle plaster or 12.5mm Gyproc WallBoard or Gyproc ThermaLine laminate Inner leaf where there is a separating floor, e.g. for flats / apartments – If using a Robust Detail floor, check that wall and floor are compatible 4 Close cavity with an Isover Cavity Barrier unless it is fully filled with non combustible insulation 5 100mm Isover RD Party Wall Roll – Tooth or tie walls together

Replace wall lining with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options Flanking details Flanking

Email: [email protected] british-gypsum.com 143 06

Cavity masonry walls (cont’d)

E-WM-20 Internal floor Section 111 junction 1 1 100mm Isover RD Party Wall Roll 2 Floor to comply with national Building Regulations Approved Document E clause E2 2 3 Internal floors should not be continuous between dwellings Floor construction 3 – Timber joists built in with all voids around the joist filled with mortar. The joint interface between the joist and the mortar sealed with flexible sealant (refer to Robust Details) – Beam and block floor with all voids filled with mortar – Concrete planks with all voids between planks and Replace wall lining with blockwork filled with mortar 12.5mm Gyproc Habito or flexible sealant for enhanced robustness and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

E-WM-20 Separating floor Section 112 junction 1 1 100mm Isover RD Party Wall Roll 2 Minimum 5mm resilient flanking 2 strip between walking surface and wall lining 3 3 Concrete planks with all voids between planks and blockwork filled with mortar or 4 flexible sealant 4 Separating floor must not be continuous between dwellings 5 Continuous horizontal ribbon of adhesive 5 Flanking details

Replace wall lining with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

144 Technical Advice Centre Tel: 0115 945 6123 06

Cavity masonry walls (cont’d)

E-WM-20 Ground floor Section 113 junction 1 100mm Isover RD Party Wall Roll 1 2 Ground floor not continuous between dwellings 3 Ground floor construction 2 – Timber joists built in with all voids around the joists filled with mortar. The joint 3 interface between the joist and the mortar sealed with 4 flexible sealant 225mm (min.) – Beam and block floor with all voids filled with mortar – Concrete planks with all voids between planks and blockwork filled with mortar or flexible sealant Replace wall lining with 12.5mm Gyproc Habito – Ground bearing slab for enhanced robustness and fixing capability 4 Cavity separating wall continuous to foundation, cavity fill may be provided below minimum clear cavity indicated. Continuous raft foundations between dwellings are not acceptable. Solid walls which support separating walls are only acceptable where each ground floor (not timber joists) is built into one side of the separating wall and breaks the vertical continuation of the wall and the minimum clear cavity indicated is maintained.

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options Flanking details Flanking

Email: [email protected] british-gypsum.com 145 06

Cavity masonry walls (cont’d)

E-WM-20 Roof junction – Section pitched roof without 1 114 room-in-the-roof

1 Junction between separating wall and roof filled with Isover mineral wool 2 Cavity masonry separating wall continuous to underside of 2 roof covering External wall cavity closed at eaves level with a suitable flexible material, e.g. mineral wool. If a rigid 3 material is used, then it should only be bonded to one leaf 3 Minimum 100mm Isover Acoustic 4 Partition Roll (APR 1200) mineral wool insulation (between ceiling joists), subject to thermal Replace wall lining with performance requirements 12.5mm Gyproc Habito for enhanced robustness 4 100mm Isover RD Party Wall and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

E-WM-20 Roof junction – Section pitched roof with 1 115 room-in-the-roof 2 1 Junction between separating 3 wall and roof filled with Isover mineral wool 2 Minimum 100mm Isover Frame Batt 35 mineral wool insulation subject to thermal performance requirement 4 3 One layer of 12.5mm Gyproc ThermaLine laminate and one layer of 15mm Gyproc WallBoard 4 Cavity masonry separating 5 wall continuous to underside of roof covering Flanking details External wall cavity closed at eaves level with a suitable flexible material, e.g. mineral wool. If a rigid Replace wall lining with material is used, then it should only 12.5mm Gyproc Habito be bonded to one leaf for enhanced robustness and fixing capability 5 100mm Isover RD Party Wall

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

146 Technical Advice Centre Tel: 0115 945 6123 06 Twin frame timber stud walls

Flanking details 116 - 121 are taken from Robust Detail construction methods, typically E-WT-1 (England and Wales) and V-WT-1 (Scotland). For further information, please refer to the Robust Details handbook or visit www.robustdetails.com

E-WT-1 External wall Plan 1 1 Masonry outer leaf 116 2 (minimum 100mm thick) 3 2 External wall cavity 4 (minimum 50mm) 3 Sheathing board (where necessary) 4 Inner leaf where there is no 5 separating floor, e.g. for houses One layer of 12.5mm Gyproc WallBoard 6 Inner leaf where there is a separating floor, e.g. for flats / apartments If using a Robust Detail floor, check that wall and floor are compatible and use two layers of 12.5mm Gyproc WallBoard

5 Close cavity with an Isover Replace 12.5mm Gyproc Cavity Barrier WallBoard with 12.5mm 6 Seal all perimeter joints with Gyproc Habito for enhanced robustness Gyproc jointing materials or caulk and fixing capability with Gyproc Sealant

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

E-WT-1 Separating floor Section junction 117 1 1 Minimum 5mm resilient strip between walking surface and wall lining 2 Floor decking may run under sole plates 2 3 3 Floor joists may span in 4 either direction 5 4 Close spaces between floor 6 joists with full depth timber blocking where joists are at right details Flanking angles to wall 7 5 Close cavity with an Isover Cavity Barrier 6 Separating floor If using a Robust Detail floor, refer to Robust Details for floating floor Replace 12.5mm Gyproc and ceiling options WallBoard with 12.5mm 7 Seal all perimeter joints with Gyproc Habito for Gyproc jointing materials or caulk enhanced robustness and fixing capability with Gyproc Sealant

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 147 06

Twin frame timber stud walls (cont’d)

E-WT-1 Ground floor junction Section 118 Timber floor, beam and block, pre-cast concrete plank, or cast in-situ concrete suspended slab 1 1 Flexible or acoustic sealant between wall lining and floor 2 2 Ground floors not continuous between dwellings 3 3 Ground floor constructions – Timber floor joists: ° May span in either direction ° Floor decking may run under sole plates ° Close spaces between floor joists with full depth timber blocking where joists are at right angles to wall – Beam and block floor with all voids filled with mortar – Pre-cast concrete planks with all voids between planks and blockwork filled with mortar or flexible sealant – Cast in-situ concrete suspended slab

Raft foundation Section 1 5mm foamed resilient flanking strip between walking surface and wall lining 1 2 Flexible or acoustic sealant between wall lining and floor 3 A floating floor treatment must be 3 used (for ground floor floating floor treatments mineral wool insulation 2 is not required between the battens or cradle system) 4 4 Concrete raft - mass per unit area of 365kg/m2 (minimum)

Flanking details Replace outer layer of 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

148 Technical Advice Centre Tel: 0115 945 6123 06

Twin frame timber stud walls (cont’d)

E-WT-1 Roof junction – Section pitched roof without 1 119 room-in-the-roof 2 1 Junction between separating wall and roof filled with mineral wool 2 Cavity separating wall continuous 3 to underside of roof 4 External wall cavity closed at eaves level with a suitable flexible material, e.g mineral wool. If a rigid material is used, then it should only be bonded to one leaf 5 3 Wall lining above ceiling can be reduced to two layers of 12.5mm 6 Gyproc WallBoard. 4 No insulation is required in cavity above ceiling Replace outer layer of 12.5mm 5 100mm Isover Acoustic Partition Gyproc WallBoard Roll (APR 1200) mineral wool with 12.5mm insulation between ceiling joists Gyproc Habito 6 Seal all perimeter joints with for enhanced Gyproc jointing materials or caulk robustness and with Gyproc Sealant Refer to pages 51 - 104 Refer to pages 105 - 134 fixing capability Refer to page 231 for Gyproc Habito finishing options

E-WT-1 Roof junction – Section pitched roof with 1 120 room-in-the-roof 2 1 Junction between separating wall 3 and roof filled with mineral wool 4 2 Minimum 100mm Isover Frame Batt 35 insulation subject to thermal performance requirements 3 One layer of Gyproc ThermaLine laminate and one layer of 15mm 5 Gyproc WallBoard subject to thermal performance requirements Flanking details Flanking 4 Seal all perimeter joints with Gyproc jointing materials or caulk with Gyproc Sealant 5 Cavity separating wall continuous to underside of roof

Replace outer External wall cavity closed at layer of 12.5mm eaves level with a suitable flexible Gyproc WallBoard material, e.g mineral wool. If a rigid with 12.5mm material is used, then it should only Gyproc Habito be bonded to one leaf for enhanced – Not currently permitted within robustness and Refer to pages 51 - 104 Refer to pages 105 - 134 Robust Details fixing capability Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 149 06

Twin frame timber stud walls (cont’d)

E-WT-1 Service and sockets in Plan 121 the separating wall Electrical sockets, switches, etc. 1 Provide two or more layers of Gyproc plasterboard, i.e a double layer of 15mm Gyproc SoundBloc or a single layer of 19mm Gyproc Plank and a single layer of 12.5mm Gyproc WallBoard to 1 enclose electrical boxes Stagger sockets, switches, etc. on each side of the wall (Approved Document E recommends minimum 150mm edge to edge) Alternatively, Hilti putty pads can be used Plan

Electrical sockets, switches, etc. 1 Alternatively provide a service void 1 on surface of separating wall. This is the preferred method where more than one socket, switch, etc. are close together, e.g. in a kitchen Studs or battens used to create the service zone should be securely fixed back to the separating wall structure.

Piped services Plan 1 Service void within separating wall 2 Provide two or more layers of Gyproc plasterboard, i.e a double layer of 15mm Gyproc SoundBloc or a single layer of 19mm Gyproc Plank and a single layer of 12.5mm Gyproc WallBoard to enclose pipes 1

Stagger services on each side 2 of wall such that they are not positioned in opposite bays Flanking details Replace outer layer of 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability NB This detail is not applicable for SVPs or gas pipes.

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

150 Technical Advice Centre Tel: 0115 945 6123 06 Twin frame steel stud walls

Flanking details 122 - 138 are taken from Robust Detail construction methods, typically E-WS-1. For further information, please refer to the Robust Details handbook or visit www.robustdetails.com

E-WS-1 External wall junction Plan 1 1 Masonry outer leaf 122 2 (minimum 100mm thick) 2 External wall cavity 3 (minimum 50mm) 4 3 Fill the void between studs with Isover Steel Frame Infill Batts, 6 for 600mm (minimum) from separating wall 5 4 Inner leaf - one layer of 12.5mm Gyproc WallBoard 5 Seal all perimeter joints with Gyproc jointing materials or caulk with Gyproc Sealant 6 Close cavity with a flexible cavity stop Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

E-WS-1 Staggered external Plan wall junction 123 1 1 Masonry outer leaf 2 (minimum 100mm thick) 3 2 External wall cavity (minimum 50mm) 3 Fill the void between studs 6 with Isover Steel Frame Infill Batts, for 600mm (minimum) from 5 separating wall

4 Inner leaf - one layer of 12.5mm details Flanking Gyproc WallBoard

5 Seal all perimeter joints with 4 Gyproc jointing materials or caulk with Gyproc Sealant

6 Close cavity with a flexible Replace 12.5mm Gyproc cavity stop WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

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Twin frame steel stud walls (cont’d)

E-WS-1 Internal floor junction Section 124 1 Lightweight steel internal floor to comply with national Building Regulations Approved Document E clause E2 2 – Floor joists may span in either direction 3

– Internal floors should not be 1 continuous between dwellings 4 2 Flexible or acoustic sealant between wall lining and floor 3 Close spaces between floor 5 joists where joists are at right angles to wall 4 Seal all perimeter joints with Gyproc jointing materials or caulk with Gyproc Sealant Replace 12.5mm Gyproc 5 Fill the void between studs with WallBoard with 12.5mm Gyproc Habito for mineral wool batt for minimum enhanced robustness 300mm down from ceiling and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

E-WS-1 Internal wall junction Plan 125 1 Where required internal wall to comply with national Building Regulations Approved Document E clause E2 1 2 Seal all perimeter joints with Gyproc jointing materials or caulk 2 with Gyproc Sealant 3 Separating wall lining continuous 3

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability Flanking details

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

152 Technical Advice Centre Tel: 0115 945 6123 06

Twin frame steel stud walls (cont’d)

E-WS-1 Ground floor Section 126 junction 1 Flexible or acoustic sealant between wall lining and floor

2 Ground floors not continuous 1 between dwellings 2 3 Ground floor constructions 3 – Beam and block floor with all voids filled with mortar – Concrete planks with all voids between planks and blockwork filled with mortar or flexible sealant Replace 12.5mm Gyproc – Cast in-situ concrete WallBoard with 12.5mm suspended slab Gyproc Habito for enhanced robustness – Ground bearing slab and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

E-WS-1 Raft foundation Section 127 1 Minimum 5mm resilient flanking strip 1 2 A floating floor treatment must be 2 used (for ground floor floating floor 3 treatments mineral wool insulation is not required between the battens or cradle system) 4 3 Flexible or acoustic sealant between wall lining and floor

4 Concrete raft - mass per unit area details Flanking of 365kg/m2 (minimum)

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 153 06

Twin frame steel stud walls (cont’d)

E-WS-1 Roof junction – Section pitched roof without 1 128 room-in-the-roof 2 1 Junction between separating wall and roof filled with flexible closer 3 2 Cavity separating wall continuous to underside of roof 3 Wall lining above ceiling – two or more layers of 12.5mm Gyproc WallBoard, both sides, all joints staggered External wall cavity closed at 4 eaves level with a suitable flexible material, e.g. mineral wool. If a rigid 5 material is used, then it should only be bonded to one leaf 4 Minimum 100mm Isover Acoustic Replace 12.5mm Gyproc Partition Roll (APR 1200) mineral WallBoard with 12.5mm 3 wool insulation, 10kg/m Gyproc Habito for (minimum) between ceiling enhanced robustness joists, subject to thermal and fixing capability performance requirements 5 Seal all perimeter joints with Gyproc jointing materials or caulk with Gyproc Sealant

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options Flanking details

154 Technical Advice Centre Tel: 0115 945 6123 06

Twin frame steel stud walls (cont’d)

E-WS-1 Services and sockets Plan 129 in the separating wall Electrical sockets, switches, etc. 1 1 Provide two or more layers of Gyproc plasterboard, i.e a double 2 layer of 15mm Gyproc SoundBloc or a single layer of 19mm Gyproc Plank and a single layer of 12.5mm Gyproc WallBoard to enclose electrical boxes Stagger sockets, switches, etc. on each side of the wall (Approved Document E recommends minimum 150mm edge to edge) 2 Fire resistant seal where required by national Building Regulations Approved Document B – Alternatively, Hilti Putty Pads Plan can be used

1 Electrical sockets, switches, etc. 1 Service void on surface of separating wall. This is the preferred method where more than one socket, switch, etc are close together, e.g. in a kitchen Studs or battens used to create the service zone should be securely fixed back to the separating wall structure

Piped services Plan 1 Stagger services on each side of wall such that they are not 1 positioned in opposite bays details Flanking

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

NB This detail is not applicable for SVPs or gas pipes.

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

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Twin frame steel stud walls (cont’d)

Flanking details 130 - 138 are taken from Robust Detail construction methods, typically E-WS-2. For further information, please refer to the Robust Details handbook or visit www.robustdetails.com

E-WS-2 External wall Plan 130 junction – steel or timber 1 frame inner leaf (at concrete 2 column position) 3

1 Masonry outer leaf or pre-cast 600mm panels (minimum 100mm thick) 4 2 External wall cavity (minimum 50mm) 5 3 Inner leaf Two layers of 12.5mm 6 Gyproc WallBoard and minimum 600mm 50mm Isover Steel Frame Infill 7 Batts placed between studs or One layer of 12.5mm Gyproc WallBoard TEN or Gyproc SoundBloc and minimum 50mm Isover Steel Frame Infill Batts placed between all studs 4 Continuous vertical ribbon of adhesive between corner of column and lining. Avoid joints in outer layer at edge of column 5 Frames fixed through 20mm mineral fibre or minimum 5mm foamed polyethylene resilient strip into the concrete column 6 Seal all perimeter joints with Gyproc jointing materials or caulk with Gyproc Sealant 7 Close cavity with an Isover Cavity Barrier between outer leaf and column

Refer to pages 51 - 104 Refer to pages 105 - 134 Flanking details

156 Technical Advice Centre Tel: 0115 945 6123 06

Twin frame steel stud walls (cont’d)

Details shown are for GypWall QUIET IWL walls, but the principles shown are also applicable to GypWall QUIET.

E-WS-2 External wall Plan 131 junction – masonry inner 1 leaf (at a concrete column 2 position) 3 1 Masonry outer leaf or pre-cast panels (minimum 100mm thick) 4 2 External wall cavity (minimum 50mm) - clear, fully filled or partially filled with insulation 5

3 Inner leaf 6 Minimum 100mm concrete block (1350kg/m3 to 1600kg/m3 or 7 1850kg3 to 2300kg/m3) – Internal finish - 13mm Thistle plaster or 12.5mm Gyproc WallBoard 4 Continuous vertical ribbon of adhesive between corner of column and lining. Avoid joints in outer layer at edge of column 5 Frames fixed through 20mm mineral wool or 5mm foamed polyethylene resilient strip into the concrete column 6 Seal all perimeter joints with Gyproc jointing materials or caulk with Gyproc Sealant 7 Close cavity with an Isover Cavity Barrier, unless it is fully filled, between outer leaf and column

Refer to pages 51 - 104 Refer to pages 105 - 134 Flanking details Flanking

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Twin frame steel stud walls (cont’d)

E-WS-2 External (flanking) Plan 132 wall junction – steel or 1 timberframe inner leaf (not 2 at concrete column position) 3

– option 1 600mm

1 Masonry outer leaf or pre-cast panels (minimum 100mm thick) 2 External wall cavity (minimum 50mm) 3 Inner leaf 4 Two layers of 12.5mm 600mm Gyproc WallBoard and minimum 5 50mm Isover Acoustic Partition Roll (APR 1200) placed between studs for first 600mm 4 Seal all perimeter joints with Gyproc jointing materials or caulk with Gyproc Sealant 5 Close cavity with an Isover Cavity Barrier between outer leaf and column Refer to pages 51 - 104 Refer to pages 105 - 134

E-WS-2 External wall Plan 133 junction – steel or timber 1 frame inner leaf (not at 2 concrete column position) 3 – option 2

1 Masonry outer leaf or pre-cast panels (minimum 100mm thick) 2 External wall cavity (minimum 50mm)

3 Inner leaf 4 One layer of 12.5mm 5 Gyproc WallBoard TEN and minimum 50mm mineral wool placed between studs

4 Rips of 12.5mm Gyproc WallBoard TEN Flanking details or Gyproc SoundBloc 5 Close cavity with an Isover Cavity Barrier between outer leaf and column

Refer to pages 51 - 104 Refer to pages 105 - 134

158 Technical Advice Centre Tel: 0115 945 6123 06

Twin frame steel stud walls (cont’d)

E-WS-2 Separating wall to Plan 134 separating wall junction 1 Gypframe GA5 Internal Fixing Angle at internal corners 2 Fully fill void with Isover Acoustic Partition Roll (APR 1200) 1 3 Seal all perimeter joints with Gyproc jointing materials or caulk 2 with Gyproc Sealant

3

Refer to pages 51 - 104 Refer to pages 105 - 134

E-WS-2 Separating wall to Plan 135 separating wall junction 1 Minimum 50mm between 1 Gypframe ‘I’ Studs and masonry 2 2 Masonry leaf 3 (minimum 100mm thick)

3 Gypframe GA5 Internal Fixing 4 Angle at internal corners 4 Fully fill void with Isover Acoustic Partition Roll (APR 1200) 5 Flanking details Flanking 5 Seal all perimeter joints with Gyproc jointing materials or caulk with Gyproc Sealant

Refer to pages 51 - 104 Refer to pages 105 - 134

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Twin frame steel stud walls (cont’d)

E-WS-2 Separating floor Plan junction – in-situ concrete 136 floor E-FC-2 1 1 Minimum 5mm resilient flanking strip between walking surface and floor lining 2

2 Flexible or acoustic sealant 3 between wall lining and floor 4 3 20mm mineral fibre or 5mm foamed polyethylene resilient strip 5 and Gyproc Sealant 6 4 Steel angle to seal void each side of deflection head 5 Gyproc CoreBoard to create dropped soffit for deflection head 6 Seal all perimeter joints with a Gyproc jointing materials or caulk with Gyproc Sealant

Refer to pages 51 - 104 Refer to pages 105 - 134

E-WS-2 Internal wall junction Plan 137 1 Internal wall to comply with national Building Regulations Approved Document E clause E2 2 Seal all perimeter joints with 1 Gyproc jointing materials or caulk with Gyproc Sealant 2 3 Separating wall lining continuous 3 Flanking details

Refer to pages 51 - 104 Refer to pages 105 - 134

160 Technical Advice Centre Tel: 0115 945 6123 06

Twin frame steel stud walls (cont’d)

E-WS-2 Sockets in the Plan 138 separating wall Electrical sockets, switches, etc. 1 Provide two or more layers of 1 Gyproc plasterboard, i.e. a double layer of 15mm Gyproc SoundBloc or a single layer of 19mm 2 Gyproc Plank and a single layer of 12.5mm Gyproc WallBoard 2 Fire-resistant seal where required by national Building Regulations Approved Document B – Stagger sockets, switches, etc on each side of the wall such that they are not positioned in opposite bays – Alternatively, Hilti Putty Pads can be used

Electrical sockets, switches, etc. Plan 1 Service void on surface of separating wall. This is the preferred method where more than 1 one socket, switch, etc are close together, e.g. in a kitchen – Studs or batterns used to create the service zone should be securely fixed back to the separating wall structure

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability Flanking details Flanking Refer to pages 51 - 104 Refer to pages 105 - 134

Email: [email protected] british-gypsum.com 161 06 Single frame steel stud walls

Flanking details 139 - 144 are taken from British Gypsum’s recommended proprietary details.

External wall junction Plan

139 1

A 1 Masonry leaf 365kg/m2 (minimum)

Plan

1 2 B 1 Masonry leaf less than 365kg/m2

2 GypLyner UNIVERSAL wall system 35mm minimum cavity 25mm Isover Acoustic Partition Roll (APR 1200) lining two layers of Gyproc SoundBloc

Refer to pages 51 - 104 Refer to pages 105 - 134 Flanking details

162 Technical Advice Centre Tel: 0115 945 6123 06

Single frame steel stud walls (cont’d)

Details shown are for GypWall QUIET SF, but the principles shown are applicable to other single frame Gypframe steel stud walls, for example GypWall CLASSIC. 140 Separating floor junction Section

2 A 1 In-situ slab minimum 365kg/m 1 2 Ceiling solution as specified

2

Section

1 B 1 Slab with floating floor system

2 2 In-situ slab less than 365kg/m 2 3 GypLyner UNIVERSAL ceiling system 35mm minimum cavity 25mm Isover Acoustic Partition Roll (APR 1200) Lining two layers of 12.5mm Gyproc SoundBloc 3

Refer to pages 51 - 104 Refer to pages 105 - 134 Flanking details Flanking

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Single frame steel stud walls (cont’d)

Roof junction – Section pitched roof without 1 141 room-in-the-roof

1 Junction between separating wall and roof filled with mineral wool 2 2 Separating wall continuous to underside of roof 3 Seal all perimeter joints with Gyproc jointing materials or caulk with Gyproc Sealant

3

Refer to pages 51 - 104 Refer to pages 105 - 134

Separating wall to separating Plan 142 wall junction 1 Gypframe GA5 Internal Fixing 1 Angle at internal corners Flanking details

Refer to pages 51 - 104 Refer to pages 105 - 134

164 Technical Advice Centre Tel: 0115 945 6123 06

Single frame steel stud walls (cont’d)

Internal wall junction Plan 143 1 Internal wall to comply with national Building Regulations Approved Document E clause E2 2 Seal all perimeter joints with Gyproc jointing materials or caulk 1 with Gyproc Sealant 2 3 Separating wall lining continuous 3

Refer to pages 51 - 104 Refer to pages 105 - 134

Services and sockets in the A B 144 separating wall Electrical sockets, switches, etc. 1 3 A 1 Provide two layers of Gyproc plasterboard (as per GypWall QUIET SF wall lining 2 specification) to enclose electrical boxes Stagger sockets, switches, etc. on each side of the wall (Approved Document E recommends minimum 150mm edge to edge) Flanking details Flanking 2 Fire-resistant seal where required by national Building Regulations Approved Document B – Alternatively, Hilti Putty Pads can be used B Electrical sockets, switches, piped services, etc. 3 Service void on surface of separating wall. This is the preferred method where more than one socket, switch, etc. are close together, e.g. in a kitchen Refer to pages 51 - 104 Refer to pages 105 - 134

Email: [email protected] british-gypsum.com 165 06 Masonry floors Flanking details 145 - 147 are taken from Robust Detail construction methods E-FC-1, E-FC-4 and E-FC-5. For further information, including the correct installation details of resilient layers and screed, please refer to the Robust Details handbook or visit www.robustdetails.com

E-FC-1 External wall junction Section 1 1 Masonry outer leaf 145 2 2 External wall cavity 3 (minimum 50mm) 4 5 3 Minimum 100mm inner leaf concrete block (1350kg/m3 to 1600kg/m3 or 1850 to 2300kg/m3) 6 4 12.5mm Gyproc WallBoard or 7 13mm Thistle plaster 5 Minimum 5mm resilient flanking 8 strip between walking surface and wall lining 6 Close cavity with an Isover Cavity Barrier unless it is fully filled with Replace 12.5mm Gyproc WallBoard with 12.5mm built in mineral wool insulation Gyproc Habito for 7 Concrete planks to be built enhanced robustness and fixing capability into wall – Wall must not be continuous between storeys – Planks must not abut inner leaf – All voids between planks and blockwork filled with mortar or flexible sealant 8 Continuous horizontal ribbon of adhesive

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options Flanking details

166 Technical Advice Centre Tel: 0115 945 6123 06

Masonry floors (cont’d)

E-FC-1 Services Section 1 146 1 Minimum 25mm mineral wool (minimum 10kg/m3) around pipe 2 All voids around pipes sealed 3 Pipe boxed with two layers of 12.5mm Gyproc WallBoard 2

3

Replace wall lining with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

E-FC-1 Separating wall Section junction – pre-cast units 147 1 1 Minimum 5mm resilient flanking strip between walking surface and wall lining 2 2 Close cavity with an Isover Cavity Barrier 3 3 Concrete planks to be built into wall 4 – Wall must not be continuous between storeys

– Planks must not abut details Flanking separating wall Replace wall lining with – All voids between planks and 12.5mm Gyproc Habito blockwork filled with mortar or for enhanced robustness flexible sealant and fixing capability 4 Continuous horizontal ribbon of adhesive

NB Under the current Robust Details scheme, lightweight separating walls (framed or aircrete block) are not permitted with this type of floor.

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 167 06 Timber joist floors Flanking details 148 - 151 are taken from Robust Detail construction methods, typically E-FT-1 and E-FT-2 (England and Wales) and V-FT-1 and V-FT-2 (Scotland). For further information, please refer to the Robust Details handbook or visit www.robustdetails.com

E-FT-1 External wall junction Section 1 1 Masonry outer leaf 148 2 2 External wall cavity 3 (minimum 50mm) 3 Two layers 12.5mm 4 Gyproc WallBoard

4 Minimum 5mm resilient flanking 5 strip between walking surface and 6 wall lining Replace outer 7 layer of 12.5mm 5 Joists may span in either direction Gyproc WallBoard with 12.5mm 6 Close spaces between floor joists Gyproc Habito with full depth timber blocking 8 for enhanced where joists are at right angles to robustness and the wall fixing capability 7 Close cavity with an Isover Cavity Barrier 8 Seal all perimeter joints with Gyproc jointing materials or caulk 1 Within Robust Details a Rip Liner is described as a small section of wall with Gyproc Sealant lining material or any board material fitted in advance of the main wall lining – Rip Liner1 between floor and to allow the installation of the floating floor treatment. British Gypsum wall lining recommends a Gyproc Moisture Resistant plasterboard is used for this purpose or a specialist board for increased impact resistance.

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

E-FT-1 Separating wall Section 149 1 Minimum 5mm resilient flanking strip between walking surface and wall lining 1 2 Joists may span in either direction 2 3 Close spaces between floor joists with full depth timber blocking 3 where joists are at right angles to the wall 4 Seal all perimeter joints with Gyproc jointing materials or caulk 4 with Gyproc Sealant 5 5 Close cavity with an Isover Cavity Barrier – Rip Liner1 between floor and wall lining Flanking details Replace outer layer of 12.5mm Gyproc WallBoard 1 Within Robust Details a Rip Liner is described as a small section of wall with 12.5mm Gyproc lining material or any board material fitted in advance of the main wall lining Habito for enhanced to allow the installation of the floating floor treatment. British Gypsum robustness and recommends a Gyproc Moisture Resistant plasterboard is used for this fixing capability purpose or a specialist board for increased impact resistance.

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

168 Technical Advice Centre Tel: 0115 945 6123 06

Timber joist floors (cont’d)

E-FT-1 Internal wall Section 150 (load-bearing) 1 Seal all perimeter joints with 1 Gyproc jointing materials or caulk with Gyproc Sealant 2 Where required internal wall to 2 comply with national Building Regulations Approved Document E clause E2 3 Minimum 5mm resilient flanking strip between walking surface and wall lining 3

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

E-FT-1 Internal wall Section (non load-bearing) 151 1 1 Gypframe RB1 Resilient Bar 2 nogging 3 2 Seal all perimeter joints with Gyproc jointing materials or caulk with Gyproc Sealant 4 3 Headplate fixed to Gypframe RB1 Resilient Bar nogging 4 Where required internal wall to

comply with national Building details Flanking Regulations Approved Document E clause E2

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Refer to pages 51 - 104 Refer to pages 105 - 134 Refer to page 231 for Gyproc Habito finishing options

Email: [email protected] british-gypsum.com 169 06 Flanking details

170 Technical Advice Centre Tel: 0115 945 6123 07

Creating perfect O7living spaces Shaping spaces for living, with internal lining solutions that enhance lifestyles Creating perfect perfect Creating living spaces living

171 07 Creating perfect living spaces

Discover how we are working within the residential industry to facilitate differentiation, through new, innovative, lifestyle-oriented products. Learn how our ‘Rooms made for you’ offer provides flexibility, easy personalisation of rooms, and the reduction of noise transfer within a home. Read more about legislation on internal walls and floors, acoustic ceilings and finishing solutions, plus use our handy system reference guide to aid specification. Finally, find out how you can work with us to develop the next generation of products for homeowners; adding value to your business, and your customers’ lives. living spaces Creating perfect 172 07 Introduction

Homes are required to perform to two extremes. They need to provide shelter, comfort, warmth, flexibility and an aesthetic quality. In conjunction with that, they need to be durable, energy efficient and safe.

These spaces are where people carry out the most personal parts of their lives. The environments where our children play and learn, where we sit on the sofa and enjoy a film, socialise with friends in the kitchen and, if we have time, enjoy a relaxing soak in the bath.

All these activities can happen at the same time without homeowners worrying that they will be disturbing anyone else in their home.

We can give specification support and guidance on a range of solutions to meet the functional design and performance requirements of the national Building Regulations for modern home interiors, providing fit-for-purpose solutions.

If you are looking for more from your new development, take a look at our new ‘Rooms made for you’ range which offers solutions that provide real benefits to the way homeowners live in their home. Creating perfect perfect Creating living spaces living

[email protected] british-gypsum.com 173 07 Internal walls living spaces Creating perfect 174 Technical Advice Centre Tel: 0115 945 6123 07 Legislation and guidance

England and Wales - National Building Regulations Approved Document E

Approved Document E (ADE) gives guidance on how to provide reasonable standards of sound insulation in dwellings and other residential buildings within England and Wales.

The aim of the standard is to improve the acoustic environment by reducing noise transmission both between, and within, all residential dwellings. Therefore, in addition to specifying levels of sound insulation for separating constructions, national Building Regulations Approved Document E also includes a required level of sound insulation for internal constructions.

Requirement E2 states: Dwelling-houses, flats and rooms for residential purposes shall be designed and constructed in such a way that (a) Internal walls between a bedroom or a room containing a water closet, and other rooms; and (b) Internal floors provide reasonable resistance to sound.

The majority of internal walls and floors must achieve Rw 40 dB.

Element of construction Minimum airborne sound insulation

(laboratory test result) Rw

Internal wall between a bathroom, or WC, and a habitable room 40 dB

Internal wall between a bedroom and another room within the dwelling 40 dB

However, internal walls which include a door are exempt from this requirement.

Complying with the regulations Pre-Completion Testing is not required for internal wall constructions in England or Wales. Building Control check internal constructions at plan stage to ensure the details specified will meet this required performance.

In England and Wales, housebuilders can follow one of two routes to demonstrate compliance for new-build houses and apartments: – Using Guidance Constructions, or – Using manufacturers’ proprietary systems

Guidance Constructions Guidance Constructions are shown in this section incorporating British Gypsum products, where appropriate. These details are British Gypsum versions of Guidance Constructions, which, provided they are built correctly, are deemed to achieve the regulatory requirements.

Manufacturers’ Proprietary Systems British Gypsum Approved Systems have been laboratory tested and have shown they have the potential to achieve the required performance criteria for internal wall construction within new-build houses and flats, provided they are built correctly. Creating perfect perfect Creating living spaces living

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Legislation and guidance (cont’d)

Scotland – Domestic Technical Handbook Section 5: Noise

On the 1st October 2010 a new version of the Domestic Technical Handbook Section 5: Noise, came into force in Scotland. This version was introduced following the first major review, for over 20 years, of the design performance requirements of previous technical handbooks.

Section 5 not only aims to limit sound transmission emanating from attached buildings; from October 2010, it also covers sound from within the same dwelling if occupants are in rooms where they would expect to have some degree of peace and quiet.

Standard 5.2 states:

Every building, must be designed and constructed in such a way to limit the transmission of source noise from normal domestic type activities, through a wall or floor, between a room and internal space where noise is likely to occur, to a level that will not cause inconvenience to the building occupants.

Standard 5.2 applies to an internal wall or floor forming a room in a dwelling, or a room in a residential building, which is capable of being used for sleeping.

The majority of internal walls and floors must achieve Rw 43 dB.

Element of construction Minimum airborne sound insulation

(laboratory test result) Rw

An internal wall or floor forming a room in a dwelling which is capable 43 dB of being used for sleeping

It does not apply to a wall between an en-suite bathroom and the room it serves.

Complying with the regulations Generic Internal Constructions Post-Completion Testing is not required for internal wall Generic Internal Constructions are shown in this section constructions in Scotland. Building Control check internal incorporating British Gypsum products, where appropriate. constructions at plan stage to ensure the details specified These details are British Gypsum versions of Generic Internal will meet the required performance. Constructions, which, provided they are built correctly, are deemed to achieve the regulatory requirements. In Scotland, housebuilders can follow one of two routes to demonstrate compliance for new-build houses and Manufacturers’ Proprietary Systems apartments; British Gypsum Approved Systems have been laboratory – Using Generic Internal Constructions, or tested and have shown they have the potential to achieve – Using manufacturers’ proprietary systems the required performance criteria for internal wall construction within new-build houses and flats, provided they are built correctly. Creating perfect perfect Creating living spaces living

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Solutions Build method Detail / Floor type Category Description Page Detail

Standard Internal wall solutions to meet Steel Proprietary British Gypsum GypWall CLASSIC incorporating Gypframe 48 S 50 ‘C’ studs and insulation 182 acoustic minimum national Building Approved System Regulations requirements in Proprietary England and Wales GypWall CLASSIC incorporating Gypframe 70 50 ‘C’ studs 182 performance England and Wales.

(England and Proprietary GypWall RAPID dB Plus incorporating 43 AS 50 AcouStuds 183 Wales) Proprietary GypWall RAPID dB Plus incorporating 43 AS 50 AcouStuds and Gypframe GWR2 184 Nogging Channels

Wall type A Guidance Construction GypWall CLASSIC incorporating Gypframe 48 S 50 ‘C’ studs and insulation 185 England and Wales Wall type B GypWall CLASSIC incorporating 48 S 50 ‘C’ studs or Gypframe 70 50 ‘C’ studs 185

Masonry Wall type C Guidance Construction Aggregate block wall minimum 120kg/m2 (excluding finish) lined with the 189 England and Wales DriLyner BASIC system or 13mm Thistle plaster

Wall type D Aircrete block wall minimum 75kg/m2 (including finish) lined with the 189 DriLyner BASIC system or minimum 90kg/m2 (including finish) lined with 13mm Wall type D Thistle plaster

Timber Proprietary British Gypsum 63mm timber studs 192 Approved System Proprietary England and Wales 63mm timber studs with insulation 192

Proprietary 63mm timber studs with insulation 193

Wall type A Guidance Construction 75mm timber studs with insulation 194 England and Wales Wall type B 75mm timber studs 194 living spaces Creating perfect 178 Technical Advice Centre Tel: 0115 945 6123 07

Solutions Build method Detail / Floor type Category Description Page Detail

Standard Internal wall solutions to meet Steel Proprietary British Gypsum GypWall CLASSIC incorporating Gypframe 48 S 50 ‘C’ studs and insulation 182 152 acoustic minimum national Building Approved System Regulations requirements in Proprietary England and Wales GypWall CLASSIC incorporating Gypframe 70 50 ‘C’ studs 182 153 performance England and Wales. (England and Proprietary GypWall RAPID dB Plus incorporating 43 AS 50 AcouStuds 183 154 Wales) Proprietary GypWall RAPID dB Plus incorporating 43 AS 50 AcouStuds and Gypframe GWR2 184 155 Nogging Channels

Wall type A Guidance Construction GypWall CLASSIC incorporating Gypframe 48 S 50 ‘C’ studs and insulation 185 156 England and Wales Wall type B GypWall CLASSIC incorporating 48 S 50 ‘C’ studs or Gypframe 70 50 ‘C’ studs 185 157

Masonry Wall type C Guidance Construction Aggregate block wall minimum 120kg/m2 (excluding finish) lined with the 189 158 England and Wales DriLyner BASIC system or 13mm Thistle plaster

Wall type D Aircrete block wall minimum 75kg/m2 (including finish) lined with the 189 159 DriLyner BASIC system or minimum 90kg/m2 (including finish) lined with 13mm Wall type D Thistle plaster

Timber Proprietary British Gypsum 63mm timber studs 192 160 Approved System Proprietary England and Wales 63mm timber studs with insulation 192 161

Proprietary 63mm timber studs with insulation 193 162

Wall type A Guidance Construction 75mm timber studs with insulation 194 163 England and Wales Wall type B 75mm timber studs 194 164 Creating perfect perfect Creating living spaces living

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System reference for internal walls (cont’d)

Solutions Build method Detail / Floor type Category Description Page Detail

Standard Internal wall solutions to meet Steel Proprietary British Gypsum GypWall RAPID dB Plus incorporating 43 AS 50 AcouStuds and insulation 195 acoustic minimum national Building Approved System Regulations requirements Scotland performance Proprietary GypWall RAPID dB Plus incorporating 43 AS 50 AcouStuds, Gypframe GWR2 Nogging 196 in Scotland, or to provide Channels and insulation (Scotland) enhanced performance for / Standard homes in England and Wales. Wall type 2 Generic Internal GypWall CLASSIC incorporating 48 S 50 ‘C’ studs or Gypframe 70 50 ‘C’ studs 197 plus acoustic Construction Scotland performance Wall type 2A GypWall CLASSIC incorporating 48 S 50 ‘C’ studs or Gypframe 70 50 ‘C’ studs and insulation 197

(England and Masonry Wall type 3 Generic Internal Concrete block wall minimum 120kg/m2 (excluding finish) lined with the 198 Wales) Construction DriLyner BASIC system or 13mm Thistle Plaster Scotland Wall type 3A Aggregate block wall, density 1350–1600kg/m3, lined with the DriLyner BASIC system 198 or 13mm Thistle plaster

Wall type 3B Aggregate block wall, density 1800–2200kg/m3, lined with the DriLyner BASIC system 199 or 13mm Thistle plaster

Wall type 4 Aircrete block, density 680–800kg/m3, wall lined with the DriLyner BASIC system or 199 13mm Thistle plaster

Timber Proprietary British Gypsum 63mm timber studs with insulation 200 Approved System Scotland

Wall type 1 Generic Internal 75mm timber studs 200 Construction Wall type 1A Scotland 75mm timber studs with insulation 201

Superior Timber Proprietary British Gypsum Silent Wall 201 performance Approved System England, (England, Scotland and Scotland and Wales Wales) living spaces Creating perfect 180 Technical Advice Centre Tel: 0115 945 6123 07

Solutions Build method Detail / Floor type Category Description Page Detail

Standard Internal wall solutions to meet Steel Proprietary British Gypsum GypWall RAPID dB Plus incorporating 43 AS 50 AcouStuds and insulation 195 165 acoustic minimum national Building Approved System Regulations requirements Scotland performance Proprietary GypWall RAPID dB Plus incorporating 43 AS 50 AcouStuds, Gypframe GWR2 Nogging 196 166 in Scotland, or to provide Channels and insulation (Scotland) enhanced performance for / Standard homes in England and Wales. Wall type 2 Generic Internal GypWall CLASSIC incorporating 48 S 50 ‘C’ studs or Gypframe 70 50 ‘C’ studs 197 167 plus acoustic Construction Scotland performance Wall type 2A GypWall CLASSIC incorporating 48 S 50 ‘C’ studs or Gypframe 70 50 ‘C’ studs and insulation 197 168

(England and 2 Masonry Wall type 3 Generic Internal Concrete block wall minimum 120kg/m (excluding finish) lined with the 198 169 Wales) Construction DriLyner BASIC system or 13mm Thistle Plaster Scotland Wall type 3A Aggregate block wall, density 1350–1600kg/m3, lined with the DriLyner BASIC system 198 170 or 13mm Thistle plaster

Wall type 3B Aggregate block wall, density 1800–2200kg/m3, lined with the DriLyner BASIC system 199 171 or 13mm Thistle plaster

Wall type 4 Aircrete block, density 680–800kg/m3, wall lined with the DriLyner BASIC system or 199 172 13mm Thistle plaster

Timber Proprietary British Gypsum 63mm timber studs with insulation 200 173 Approved System Scotland

Wall type 1 Generic Internal 75mm timber studs 200 174 Construction Wall type 1A Scotland 75mm timber studs with insulation 201 175

Superior Timber Proprietary British Gypsum Silent Wall 201 176 performance Approved System England, (England, Scotland and Scotland and Wales Wales) Creating perfect perfect Creating living spaces living

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Steel frame walls

GypWall CLASSIC PSR A206033 (Gypframe 48 S 50 ‘C’ Studs 152 at 600mm centres, with insulation)

Overall construction nominal Rw 40 dB width 75mm 30 mins BS Gypframe 48 S 50 ‘C’ Studs at 600mm centres Maximum 25mm Isover Acoustic Partition Roll height 2500mm (APR 1200) in the cavity Lined with a single layer of 12.5mm Gyproc WallBoard each side

Replace 12.5mm Gyproc WallBoard with 12.5mm British Gypsum Approved System Gyproc Habito for enhanced robustness England and Wales and fixing capability

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to page 231 for Gyproc Habito finishing options

GypWall CLASSIC PSR A206164 (Gypframe 70 S 50 ‘C’ Studs 153 at 600mm centres, without insulation)

Overall construction nominal Rw 40 dB width 97mm 30 mins BS Gypframe 70 S 50 ‘C’ Studs at 600mm centres Maximum Lined with a single layer of 12.5mm height 3600mm Gyproc SoundBloc each side

Add an additional outer layer of 12.5mm Gyproc Habito for enhanced robustness and fixing capability British Gypsum Approved System England and Wales

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to page 231 for Gyproc Habito finishing options living spaces Creating perfect 182 Technical Advice Centre Tel: 0115 945 6123 07

Construction details – Standard performance (England and Wales) (cont’d)

Steel frame walls

GypWall RAPID dB Plus PSR A139A005 (Gypframe 43 AS 50 AcouStuds 154 at 450mm centres, without insulation)

Overall construction nominal Rw 40 dB width 75mm 30 mins BS 43mm Gypframe 43 AS 50 AcouStuds at 450mm centres Maximum Use Gypframe Floor & Ceiling Channel height 2700mm vertically at abutments in GypWall RAPID dB Plus rather than Gypframe stud section Lined with a single layer of 15mm Gyproc SoundBloc RAPID each side 32mm British Gypsum Drywall Screws are used to fix 15mm Gyproc SoundBloc RAPID in the GypWall RAPID dB Plus system The innovative door detailing of GypWall RAPID dB Plus means that overboarding is not required during installation and, as a result, plasterboard waste is British Gypsum Approved System considerably reduced England and Wales

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum. Creating perfect perfect Creating living spaces living

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Construction details – Standard performance (England and Wales) (cont’d)

Steel frame walls

GypWall RAPID dB Plus PSR A139A001 (Gypframe 43 AS 50 AcouStuds 155 at 900mm centres, without insulation)

Overall construction nominal Rw 40 dB width 75mm 30 mins BS 43mm Gypframe 43 AS 50 AcouStud at 900mm centres Maximum Use Gypframe Floor & Ceiling Channel height 2400mm vertically at abutments in GypWall RAPID dB Plus rather than Gypframe stud section Gypframe GWR2 Nogging Channel at mid-height Lined with a single layer of 15mm Gyproc SoundBloc RAPID each side 32mm British Gypsum Drywall Screws are used to fix 15mm Gyproc SoundBloc in the GypWall RAPID dB Plus system The innovative door detailing of GypWall RAPID dB Plus means that overboarding is not required during installation and, as a result, plasterboard waste is British Gypsum Approved System considerably reduced England and Wales

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum. living spaces Creating perfect 184 Technical Advice Centre Tel: 0115 945 6123 07

Construction details – Standard performance (England and Wales) (cont’d)

Steel frame walls

GypWall CLASSIC PSR A206154 156 (internal wall type A) Overall construction nominal width 100mm

Guidance Stud options: Construction Gypframe 48 S 50 ‘C’ Studs at 600mm centres or Gypframe 70 S 50 ‘C’ Studs 60 mins BS at 600mm centres Board options: Maximum Double layer of 12.5mm Gyproc height WallBoard TEN each side or Double layer 3400mm or of 12.5mm Gyproc SoundBloc each side 4600mm

Replace outer plasterboard layer with 12.5mm Gyproc Habito Guidance Construction for enhanced robustness and fixing capability England and Wales

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to page 231 for Gyproc Habito finishing options

GypWall CLASSIC PSR A206184 157 (internal wall type B) Overall construction nominal width 75mm

Guidance Maximum height 2500mm Construction (at 600mm centres) 2700mm (at 400mm centres) 30 mins BS Gypframe 48 S 50 ‘C’ Studs at 400mm or 600mm centres Maximum height 25mm Isover Acoustic Partition 2500mm or (APR 1200) in the stud cavity 2700mm Board options: Single layer of 12.5mm Gyproc WallBoard TEN each side or Single layer of 12.5mm Gyproc SoundBloc each side Replace plasterboard lining with 12.5mm Guidance Construction Gyproc Habito for enhanced robustness England and Wales and fixing capability

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and perfect Creating filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used spaces living throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum.

Refer to page 231 for Gyproc Habito finishing options [email protected] british-gypsum.com 185 07

Gypframe metal products The modern, engineered alternative to traditional timber and blockwork construction, Gypframe-based wall, ceiling and floor systems are quicker and easier to install, whilst meeting the highest performance requirements.

Up to 50% lighter than equivalent timber systems, and up to 70% lighter than blockwork, Gypframe metal products are easier to transport and offer a high strength to weight ratio for guaranteed performance and long life. Gypframe components are easy to cut on site, non-flammable and won’t rot, twist or warp. They can be stored outside and installed in any weather, making it easier to schedule work.

Gypframe profiles are manufactured using the patented UltraSTEEL® process and conform to EN 14195. The UltraSTEEL® process gives the components greater strength, makes fixing easier and improves screw retention and pull-out by up to 20%. That’s why only systems built using Gypframe metal components qualify for the British Gypsum SpecSure® lifetime system warranty – peace of mind that they will perform to specification throughout their entire installed life.

Isn’t it amazing the difference a few folds can make?

British Gypsum is committed to continuous product development. That’s why in 1998 we introduced the first folded edge channel exclusively for the housing market. Now, working in conjunction with our customers, we’ve brought that innovation to the entire market to ensure easier manual handling of our products and to contribute to on-site health and safety.

British Gypsum has now introduced folded edges to the entire Gypframe channel range to provide our customers with a full range of products that have a safer working edge. living spaces Creating perfect 186 Technical Advice Centre Tel: 0115 945 6123 07

Metal innovations by British Gypsum

1974 Introduced lightweight metal framing systems into the UK

1978 Launched MF7 ceiling system

1992 Developed the first dedicated housing system GypWall RAPID

1998 Introduced the first folded edge product for house building

Introduced the AcouStud, with a patented stud profile, for 2002 increased acoustic performance

2010 Introduced the new 50mm Gypframe folded edge channel

2012 Folded edges introduced to the entire range of Gypframe channels

2013 Gypframe metal awarded BES 6001 ‘Very Good’

Gypframe metal framing components have been certified ‘Very Good’ under BES 6001 – the first metal drylining components to achieve this.

They join British Gypsum’s wide range of certified products, including Gyproc plasterboards, Glasroc specialist boards and Thistle plasters. This means we’re now able to offer you a system solution where the majority of the constituent components (metal framing, plasterboard and plaster), achieve the ‘Very Good’ standard, earning points towards the Code for Sustainable Homes within the materials category (under issue MAT 2). Creating perfect perfect Creating living spaces living

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Glasroc H TILEBACKER Behind every perfect tile job

A high performance board specifically designed for use in wet areas such as bathrooms and kitchens.

Ready primed for direct tiling, Glasroc H TILEBACKER is up to a third lighter than cement boards and faster to install, leaving more time for tiling.

Quick and easy to install: – No power tools, pre-drilling or specialist fixings required, just score and snap to size. Simply screw in place with British Gypsum Drywall or Drywall Timber Screws – Easy to construct saving time and effort, no pre-treatment required – 12.5mm board can be fixed to masonry backgrounds using Gyproc Dri-Wall Adhesive and British Gypsum Nailable Plugs – You can use your current and favoured materials as it’s compatible with standard tile adhesives – Lighter board for manual handling and on-site logistics

It offers moisture and mould resistant properties, combined with superior dimensional stability, making it the high performance alternative to plywood and cement boards.

The range includes both 12.5mm and 6mm thick boards offering the full solution for floors and walls. The 6mm board can be curved to fit walls to a radius of 600mm and when used for floors it is also suitable for use with electric underfloor heating systems.

Compatible with all British Gypsum systems and no special framework required. For example, Glasroc H TILEBACKER 12.5mm can be used within the GypWall CLASSIC system, with studs at 600mm centres. This will then support up to 32kg/m2 of any tile type. living spaces Creating perfect 188 Technical Advice Centre Tel: 0115 945 6123 07

Construction details – Standard performance (England and Wales) (cont’d)

Masonry walls

Aggregate concrete block 120kg/m2 158 (internal wall type C)

Masonry block wall minimum 120kg/m2 Guidance Construction Finished with 13mm Thistle plaster (see pages 82 and 83) or drylined with 12.5mm Gyproc WallBoard using DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Guidance Construction England and Wales

Refer to page 231 for Gyproc Habito finishing options

Aircrete concrete block 159 (internal wall type D) Masonry non-loadbearing block wall, minimum 90kg/m2

Guidance Finished with 13mm Thistle plaster Construction both sides (see pages 82 and 83) or Masonry non-loadbearing block wall minimum 75kg/m2 Drylined with 12.5mm Gyproc WallBoard TEN using DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard TEN with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Guidance Construction

England and Wales perfect Creating living spaces living

Refer to page 231 for Gyproc Habito finishing options

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Choosing Thistle plasters

There are many factors to consider when choosing an internal wall finish for a new house or apartment.

What kind of performance do I need? What level of finish is required? How will the rooms be used? If you choose two-coat systems, they’ll help you meet regulations and environmental requirements, as well as mandatory airtightness standards. You can also be sure of a robust solid finish that will help improve sound performance and reduce air leakage.

Thistle plasters provide technical solutions, developed to meet the changing needs of housebuilders and homeowners. Whether you choose the two-coat systems or use a plaster skim on drylined walls, you can select from a range of different products. Thistle plasters provide the demanding lining finish properties you need from extra durable plasters that protect against scuffs and knocks, to plasters specifically designed for different types of background. Thistle plasters; creating wall solutions for modern homes. living spaces Creating perfect 190 Technical Advice Centre Tel: 0115 945 6123 07

Upgrading new homes Many homeowners prefer the reassuring feel of a solid wall finished with two-coat Thistle plaster. It’s easier to fix to, smooth to the touch and provides additional sound proofing to help stop noise problems within the home.

With Thistle plastered walls you can make every home feel special: – Give homeowners robust, solid walls throughout their home, or in selected rooms – Make fixing heavy objects easier, shelves in a study, for instance, or a 50" flat screen TV in the lounge – Resist minor knocks and enable any damage to be repaired quickly and easily – When it’s time to redecorate, wallpaper is easier to strip from plastered walls Creating perfect perfect Creating living spaces living

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Construction details – Standard performance (England and Wales) (cont’d)

Timber frame walls

Timber stud (600mm centres, PSR A026008 160 without insulation) Overall construction nominal width 93mm Minimum 63mm x 38mm Rw 40 dB non-loadbearing timber studs at 600mm centres 30 mins BS Timber noggings are normally required. Please seek advice from timber supplier Lined with a single layer of 15mm Gyproc SoundBloc each side

Add an additional outer layer of 12.5mm Gyproc Habito for enhanced robustness and fixing capability

British Gypsum Approved System England and Wales

Refer to page 231 for Gyproc Habito finishing options

Timber stud (600mm centres, PSR A026009 161 with insulation) Overall construction nominal width 88mm Minimum 63mm x 38mm Rw 40 dB non-loadbearing timber studs at 600mm centres 30 mins BS Timber noggings are normally required. Please seek advice from timber supplier 25mm Isover Acoustic Partition Roll (APR 1200) in the cavity Lined with a single layer of 12.5mm Gyproc SoundBloc each side

Add an additional outer layer of 12.5mm Gyproc Habito for enhanced robustness and fixing capability British Gypsum Approved System England and Wales

Refer to page 231 for Gyproc Habito finishing options living spaces Creating perfect 192 Technical Advice Centre Tel: 0115 945 6123 07

Construction details – Standard performance (England and Wales) (cont’d)

Timber frame walls

Timber stud (600mm centres, PSR A026012 162 with insulation) Overall construction nominal width 88mm Minimum 63mm x 38mm Rw 41 dB non-loadbearing timber studs at 600mm centres 30 mins BS Timber noggings are normally required. Please seek advice from timber supplier 65mm Isover Acoustic Partition Roll (APR 1200) in the cavity Lined with a single layer of 12.5mm Gyproc WallBoard each side

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability British Gypsum Approved System England and Wales

Refer to page 231 for Gyproc Habito finishing options Creating perfect perfect Creating living spaces living

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Construction details – Standard performance (cont’d)

Timber frame walls

Timber stud (internal wall PSR A026015 163 type A) Overall construction nominal width 125mm

Guidance Minimum 75mm x 38mm timber Construction stud at 600mm centres (loadbearing ratio 60%) Timber noggings are normally required. 60 mins BS Please seek advice from timber supplier Board options: Double layer of 12.5mm Gyproc WallBoard TEN each side or Double layer of 12.5mm Gyproc SoundBloc each side

Replace outer plasterboard layer with 12.5mm Gyproc Habito for enhanced robustness and fixing capability Guidance Construction England and Wales

Refer to page 231 for Gyproc Habito finishing options

Timber stud (internal wall PSR A026016 164 type B) Overall construction nominal width 100mm

Guidance Minimum 75mm x 38mm timber Construction stud at 600mm centres (loadbearing ratio 60%) 30 mins BS Timber noggings are normally required. Please seek advice from timber supplier 25mm Isover Acoustic Partition Roll (APR 1200) in the stud cavity Board options: Single layer of 12.5mm Gyproc WallBoard TEN each side or Single layer of 12.5mm Gyproc SoundBloc each side

Replace plasterboard lining with 12.5mm Gyproc Habito for Guidance Construction enhanced robustness England and Wales and fixing capability Refer to page 231 for Gyproc Habito finishing options living spaces Creating perfect 194 Technical Advice Centre Tel: 0115 945 6123 07 Construction details – Standard performance (Scotland) / Standard plus performance (England and Wales)

Steel frame walls

GypWall RAPID dB Plus PSR A139A006 (Gypframe 43 AS 50 AcouStuds 165 at 450mm centres, with insulation)

Overall construction nominal Rw 43 dB width 75mm 30 mins BS 43mm Gypframe 43 AS 50 AcouStud at 450mm centres Maximum Use Gypframe Floor & Ceiling Channel height 2700mm vertically at abutments in GypWall RAPID dB Plus rather than Gypframe stud section 25mm Isover Acoustic Partition Roll (APR 1200) in the cavity Lined with a single layer of 15mm Gyproc SoundBloc RAPID each side 32mm British Gypsum Drywall Screws are used to fix 15mm Gyproc SoundBloc in the GypWall RAPID dB Plus system The innovative door detailing of GypWall RAPID dB Plus means that overboarding is not required during installation and, as a result, plasterboard waste is British Gypsum Approved System considerably reduced England, Wales and Scotland

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum. Creating perfect perfect Creating living spaces living

[email protected] british-gypsum.com 195 07

Construction details – Standard performance (Scotland) / Standard plus performance (England and Wales) (cont’d) Steel frame walls

GypWall RAPID dB Plus PSR A139A003 (Gypframe 43 AS 50 AcouStuds 166 at 900mm centres, with insulation)

Overall construction nominal Rw 44 dB width 75mm 30 mins BS Gypframe 43mm 43 AS 50 AcouStuds at 900mm centres Maximum Gypframe GWR2 Nogging Channels height 2400mm at mid-height Use Gypframe Floor & Ceiling Channel vertically at abutments in GypWall RAPID dB Plus rather than Gypframe stud section 25mm Isover Acoustic Partition Roll (APR 1200) in the cavity Lined with a single layer of 15mm Gyproc SoundBloc RAPID each side 32mm British Gypsum Drywall Screws are used to fix 15mm Gyproc SoundBloc in the GypWall RAPID dB Plus system The innovative door detailing of GypWall RAPID dB Plus means that overboarding is not required during installation and, as a result, plasterboard waste is considerably British Gypsum Approved System reduced England, Wales and Scotland

NB The fire resistance and sound insulation performance are for imperforate partitions, walls and ceilings incorporating boards with all joints taped and filled, or skimmed according to British Gypsum’s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the company’s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum. living spaces Creating perfect 196 Technical Advice Centre Tel: 0115 945 6123 07

Construction details – Standard performance (Scotland) / Standard plus performance (England and Wales) (cont’d) Steel frame walls

GypWall CLASSIC incorporating 48 S 50 ‘C’ studs or Gypframe 167 70 S 50 ‘C’ studs (Internal wall type 2)

Generic Overall construction width 100mm Internal Minimum 48mm Gypframe 48 S 50 Construction ‘C’ Studs at 600mm centres

60 mins BS Double layer of 12.5mm Gyproc SoundBloc or double layer Maximum Gyproc WallBoard TEN to both sides height 3400mm Replace outer plasterboard layer with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Generic Internal Construction Scotland

Refer to page 231 for Gyproc Habito finishing options

GypWall CLASSIC incorporating 48 S 50 ‘C’ studs or Gypframe 168 70 50 ‘C’ studs and insulation (Internal wall type 2A)

Generic Overall construction width 75mm Internal Construction Minimum 48mm Gypframe 48 S 50 ‘C’ Studs at 600mm centres 30 mins BS 25mm Isover Acoustic Partition Roll (APR 1200) Maximum height Single layer of 12.5mm 2500mm Gyproc SoundBloc or Gyproc WallBoard TEN to both sides

Replace plasterboard lining with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Generic Internal Construction

Scotland perfect Creating living spaces living

Refer to page 231 for Gyproc Habito finishing options

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Construction details – Standard performance (Scotland) / Standard plus performance (England and Wales) (cont’d) Masonry walls

Aggregate concrete block 120kg/m2 169 (internal wall type 3)

Masonry block wall minimum 120kg/m2 Generic Internal Finished with 13mm Thistle plaster Construction (see pages 82 and 83) or drylined with 12.5mm Gyproc WallBoard using DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Generic Internal Construction Scotland

Refer to page 231 for Gyproc Habito finishing options

Aggregate concrete block 1350–1600kg/m3 170 (internal wall type 3A)

Aggregate block wall, density 1350–160kg/m3 Generic Internal Finished with 13mm Thistle plaster Construction (see pages 82 and 83) or drylined with 12.5mm Gyproc WallBoard using DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Generic Internal Construction Scotland

Refer to page 231 for Gyproc Habito finishing options living spaces Creating perfect 198 Technical Advice Centre Tel: 0115 945 6123 07

Construction details – Standard performance (Scotland) / Standard plus performance (England and Wales) (cont’d) Masonry walls

Aggregate concrete block 1800–2200kg/m3 171 (internal wall type 3B)

Aggregate block wall, density 1800–2200kg/m3 Generic Internal Finished with 13mm Thistle plaster Construction (see pages 82 and 83) or drylined with 12.5mm Gyproc WallBoard using DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Generic Internal Construction Scotland

Refer to page 231 for Gyproc Habito finishing options

Aircrete concrete block 172 (internal wall type 4) Masonry non-loadbearing block wall, minimum 90kg/m2

Generic Finished with 13mm Thistle plaster Internal both sides (see pages 82 and 83) Construction or Masonry non-loadbearing block wall minimum 75kg/m2 Drylined with 12.5mm Gyproc WallBoard TEN using DriLyner BASIC system

Replace 12.5mm Gyproc WallBoard TEN with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Generic Internal Construction

Scotland perfect Creating living spaces living

Refer to page 231 for Gyproc Habito finishing options

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Construction details – Standard performance (Scotland) / Standard plus performance (England and Wales) (cont’d) Timber frame walls

Timber stud PSR A026033 173 Overall construction width 93mm 63mm timber studs at 600mm centres 50mm Isover Acoustic Partition Roll

Rw 43 dB (APR 1200) Single layer of 15mm Gyproc SoundBloc 30 mins BS to both sides

Add an additional outer layer of 12.5mm Gyproc Habito for enhanced robustness and fixing capability

British Gypsum Approved System England, Wales and Scotland

Refer to page 231 for Gyproc Habito finishing options

Timber stud Generic Internal Construction 174 (Internal wall type 1)

Overall construction width 125mm Generic Internal 75mm timber studs at 600mm centres Construction Double layer of 12.5mm Gyproc SoundBloc or double layer of 60 mins BS Gyproc WallBoard TEN to both sides

Replace outer layer of 12.5mm Gyproc WallBoard with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Generic Internal Construction Scotland

Refer to page 231 for Gyproc Habito finishing options living spaces Creating perfect 200 Technical Advice Centre Tel: 0115 945 6123 07

Construction details – Standard performance (Scotland) / Standard plus performance (England and Wales) (cont’d) Timber frame walls

Timber stud Generic Internal Construction 175 (Internal wall type 1A)

Overall construction width 100mm

Generic 75mm timber studs at 600mm centres Internal Construction 25mm Isover Acoustic Partition Roll (APR 1200) 30 mins BS Single layer of 12.5mm Gyproc SoundBloc or Gyproc WallBoard TEN to both sides

Replace plasterboard lining with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

Generic Internal Construction Scotland

Refer to page 231 for Gyproc Habito finishing options

Silent Wall PSR A206231 176 Overall construction nominal width between 123mm and 132mm Gypframe 70 S 50 ‘C’ Studs or 63mm Silent Wall timber studs at 600mm centres performance levels (see 50mm Isover APR 1200 in the page 215) partition cavity Lined with a double layer of 15mm Gyproc SoundBloc

Replace outer layer with 12.5mm Gyproc Habito for enhanced robustness and fixing capability

British Gypsum Approved System England, Wales and Scotland perfect Creating living spaces living

Refer to page 231 for Gyproc Habito finishing options

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Header 2

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Internal floors living spaces Creating perfect 202 Technical Advice Centre Tel: 0115 945 6123 07 Legislation and guidance

England and Wales - National Building Regulations Approved Document E

Approved Document E (ADE) gives guidance on how to provide reasonable standards of sound insulation in dwellings and other residential buildings within England and Wales.

The aim of the standard is to improve the acoustic environment by reducing noise transmission both between, and within, all residential dwellings. Therefore, in addition to specifying levels of sound insulation for separating constructions, Building Regulations Approved Document E also includes a required level of sound insulation for internal constructions.

Requirement E2:

Dwelling-houses, flats and rooms for residential purposes shall be designed and constructed in such a way that internal floors provide reasonable resistance to sound.

Element of construction Minimum airborne sound transmission

(laboratory test result) Rw

Internal floor 40 dB

Complying with the regulations Pre-Completion Testing is not required for internal floor constructions in England or Wales. Building Control check internal constructions at plan stage to ensure the details specified will meet this required performance.

In England and Wales, housebuilders can follow one of two routes to demonstrate compliance for new-build houses and apartments: – Using Guidance Constructions, or – Using manufacturers’ proprietary systems

Guidance Constructions Guidance Constructions are shown in this section incorporating British Gypsum products, where appropriate. These details are British Gypsum versions of Guidance Constructions, which, provided they are built correctly, are deemed to achieve the regulatory requirements.

Manufacturers’ Proprietary Systems British Gypsum Approved Systems have been laboratory tested and have shown they have the potential to achieve the required performance criteria for internal wall construction within new-build houses and flats, provided they are built correctly. Creating perfect perfect Creating living spaces living

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Body copy living spaces Creating perfect 204 Technical Advice Centre Tel: 0115 945 6123 07

Legislation and guidance (cont’d)

Scotland – Domestic Technical Handbook Section 5: Noise

On the 1st October 2010 a new version of the Domestic Technical Handbook Section 5: Noise, came into force in Scotland. This version was introduced following the first major review, for over 20 years, of the design performance requirements of previous technical handbooks.

Section 5 not only aims to limit sound transmission emanating from attached buildings; from October 2010, it also covers sound from within the same dwelling if the occupants are in rooms where they would expect to have some degree of peace and quiet.

Standard 5.2:

Every building, must be designed and constructed in such a way to limit the transmission of source noise from normal domestic type activities, through a wall or floor, between a room and internal space where noise is likely to occur, to a level that will not cause inconvenience to the building occupants.

Standard 5.2 applies to an internal floor forming a room in a dwelling, or a room in a residential building, which is capable of being used for sleeping.

Element of construction Minimum airborne sound transmission

(laboratory test result) Rw

Internal floor 43 dB

Complying with the regulations Generic Internal Constructions Post-Completion Testing is not required for internal floor Generic Internal Constructions are shown in this section constructions in Scotland. Building Control check internal incorporating British Gypsum products, where appropriate. constructions at plan stage to ensure the details specified These details are British Gypsum versions of Generic Internal will meet the required performance. Constructions, which, provided they are built correctly, are deemed to achieve the regulatory requirements. In Scotland, housebuilders can follow one of two routes to demonstrate compliance for new-build houses and Manufacturers’ Proprietary Systems apartments: British Gypsum Approved Systems have been laboratory – Using Generic Internal Constructions, or tested and have shown they have the potential to achieve – Using manufacturers’ proprietary systems the required performance criteria for internal wall construction within new-build houses and flats, provided they are built correctly. Creating perfect perfect Creating living spaces living

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Solutions Build method Detail / Floor type Category Description Page Detail

Standard Internal floor solutions to Timber Proprietary British Gypsum Solid timber joist with 15mm Gyproc WallBoard ceiling lining 208 acoustic meet minimum national Approved System Building Regulations Proprietary England and Wales Engineered timber I joist with 15mm Gyproc WallBoard ceiling lining 208 performance requirements in England (England and and Wales Proprietary Solid timber joist with 12.5mm Gyproc SoundBloc ceiling lining 209 Wales) Proprietary Solid timber joist with 12.5mm Gyproc FireLine ceiling lining 209

Proprietary Solid timber joist with Gypframe RB2 SureFix Bar and 12.5mm Gyproc WallBoard 210 ceiling lining

Internal Guidance Construction Solid timber joist with insulation and 12.5mm Gyproc WallBoard TEN or 12.5mm 210 Floor type C England and Wales Gyproc SoundBloc ceiling lining

Concrete Internal Guidance Construction Concrete planks 211 Floor type A England and Wales

Internal Beam and block 211 Floor type B

Standard Internal floor solutions to Timber Proprietary British Gypsum Solid timber joist with Gypframe RB1 Resilient Bar and 12.5mm Gyproc WallBoard 212 acoustic meet minimum national Approved System ceiling lining Building Regulations England, Wales performance requirements in Scotland, and Scotland (Scotland) or to provide enhanced / Standard performance for homes in plus acoustic England and Wales Proprietary Engineered timber I joist with Gypframe RB1 Resilient Bar and 15mm Gyproc WallBoard 212 performance ceiling lining (England and Wales)

Proprietary Solid timber joist with Gypframe RB1 Resilient Bar or RB2 SureFix Bar and 12.5mm 213 Gyproc FireLine ceiling lining

Internal Generic Internal Solid timber joist with insulation and 12.5mm Gyproc WallBoard TEN or 12.5mm 213 Floor type 1 Construction Gyproc SoundBloc ceiling lining Scotland

Superior Delivering substantially Timber Proprietary British Gypsum Engineered timber I joist with Gypframe RB1 Resilient Bar and 15mm Gyproc SoundBloc 214 performance enhanced levels of sound Approved System ceiling lining insulation, so different England, Wales (England, Wales members of the family can and Scotland and Scotland) turn TV’s and stereos up loud, or enjoy a quiet’s night sleep, without any compromise living spaces Creating perfect 206 Technical Advice Centre Tel: 0115 945 6123 07

Solutions Build method Detail / Floor type Category Description Page Detail

Standard Internal floor solutions to Timber Proprietary British Gypsum Solid timber joist with 15mm Gyproc WallBoard ceiling lining 208 177 acoustic meet minimum national Approved System Building Regulations Proprietary England and Wales Engineered timber I joist with 15mm Gyproc WallBoard ceiling lining 208 178 performance requirements in England (England and and Wales Proprietary Solid timber joist with 12.5mm Gyproc SoundBloc ceiling lining 209 179 Wales) Proprietary Solid timber joist with 12.5mm Gyproc FireLine ceiling lining 209 180

Proprietary Solid timber joist with Gypframe RB2 SureFix Bar and 12.5mm Gyproc WallBoard 210 181 ceiling lining

Internal Guidance Construction Solid timber joist with insulation and 12.5mm Gyproc WallBoard TEN or 12.5mm 210 182 Floor type C England and Wales Gyproc SoundBloc ceiling lining

Concrete Internal Guidance Construction Concrete planks 211 183 Floor type A England and Wales

Internal Beam and block 211 184 Floor type B

Standard Internal floor solutions to Timber Proprietary British Gypsum Solid timber joist with Gypframe RB1 Resilient Bar and 12.5mm Gyproc WallBoard 212 185 acoustic meet minimum national Approved System ceiling lining Building Regulations England, Wales performance requirements in Scotland, and Scotland (Scotland) or to provide enhanced / Standard performance for homes in plus acoustic England and Wales Proprietary Engineered timber I joist with Gypframe RB1 Resilient Bar and 15mm Gyproc WallBoard 212 186 performance ceiling lining (England and Wales)

Proprietary Solid timber joist with Gypframe RB1 Resilient Bar or RB2 SureFix Bar and 12.5mm 213 187 Gyproc FireLine ceiling lining

Internal Generic Internal Solid timber joist with insulation and 12.5mm Gyproc WallBoard TEN or 12.5mm 213 188 Floor type 1 Construction Gyproc SoundBloc ceiling lining Scotland

Superior Delivering substantially Timber Proprietary British Gypsum Engineered timber I joist with Gypframe RB1 Resilient Bar and 15mm Gyproc SoundBloc 214 189 performance enhanced levels of sound Approved System ceiling lining insulation, so different England, Wales (England, Wales members of the family can and Scotland and Scotland) turn TV’s and stereos up loud, or enjoy a quiet’s night sleep, without any compromise Creating perfect perfect Creating living spaces living

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Timber joist floors

Solid timber joist PSR C106029 177 22mm t&g chipboard flooring Minimum 195mm deep solid joists at 600mm centres

Rw 40 dB Lined with a single layer of 15mm Gyproc WallBoard 30 mins BS

British Gypsum Approved System England and Wales

Engineered timber PSR C206015 178 I joist 22mm t&g chipboard flooring Minimum 240mm deep engineered I joists at 600mm centres Rw 41 dB Lined with a single layer of 15mm 30 mins BS Gyproc WallBoard When specifying engineered timber joists, please seek advice from the manufacturer regarding the specification of noggings

British Gypsum Approved System England and Wales

NB This is based on a test with a typical I joist. For I joists by specific manufacturers, consult them direct. living spaces Creating perfect 208 Technical Advice Centre Tel: 0115 945 6123 07

Construction details – Standard performance (England and Wales) (cont’d)

Timber joist floors

Solid timber joist PSR C016028 179 22mm t&g chipboard flooring Minimum 195mm deep solid joists at 600mm centres

Rw 42 dB Lined with a single layer of 12.5mm Gyproc SoundBloc 30 mins BS

British Gypsum Approved System England and Wales

Solid timber joist PSR C016009 180 22mm t&g chipboard flooring Minimum 195mm deep solid joists at 600mm centres Lined with a double layer of 12.5mm Rw 40 dB Gyproc FireLine

60 mins BS

British Gypsum Approved System England and Wales

Room-in-the-roof This construction meets current legislation (national Building Regulations Approved Document B) in situations where the internal floor construction in a room-in-the-roof is required to achieve perfect Creating living spaces living 60 minutes fire resistance.

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Construction details – Standard performance (England and Wales) (cont’d)

Timber joist floors

Solid timber joist and PSR C206006 181 Gypframe RB2 SureFix Bar 22mm t&g chipboard flooring Minimum 195mm deep solid joists at 600mm centres Rw 41 dB Gypframe RB2 SureFix Bars at 30 mins BS 450mm centres Lined with a single layer of 12.5mm Gyproc WallBoard

British Gypsum Approved System England and Wales

Post installation shrinkage of timber joists, if excessive, can cause fixing defects. The use of Gypframe RB2 SureFix Bar can eliminate the problem.

Solid timber joists 182 (Internal floor type C) Timber joist floor with wood based flooring minimum 15kg/m2 surface mass Guidance Construction 100mm Isover Acoustic Partition Roll (APR 1200) Board options: Lined with 12.5mm Gyproc WallBoard TEN or A single layer of 12.5mm Gyproc SoundBloc

Guidance Construction England and Wales living spaces Creating perfect 210 Technical Advice Centre Tel: 0115 945 6123 07

Construction details – Standard performance (England and Wales) (cont’d)

Masonry floors

Concrete plank 183 (Internal floor type A) Pre-cast concrete planks with mass per unit area minimum 180kg/m2

Guidance Optional screed Construction Optional ceiling finish, e.g. GypLyner UNIVERSAL or CasoLine MF, to accommodate services in the ceiling plenum, lined with 12.5mm Gyproc WallBoard

Guidance Construction England and Wales

Beam and block 184 (Internal floor type B) Beam and block floor, surface mass minimum 220kg/m2 Minimum 40mm bonded sand / Guidance Construction cement screed

GypLyner UNIVERSAL or CasoLine MF ceiling 25mm Isover Acoustic Partition Roll (APR 1200) in the cavity Board options: Lined with a single layer of 12.5mm Gyproc WallBoard TEN or A single layer of 12.5mm Gyproc SoundBloc

Guidance Construction Creating perfect perfect Creating

England and Wales spaces living

[email protected] british-gypsum.com 211 07 Construction details – Standard performance (Scotland) / Standard plus performance (England and Wales) Timber joist floors

Solid timber joists and PSR C206012 185 Gypframe RB1 Resilient Bar 22mm t&g chipboard flooring Minimum 195mm deep solid joists at

Rw 44 dB maximum 600mm centres Gypframe RB1 Resilient Bars at 30 mins BS 450mm centres Lined with a single layer of 12.5mm Gyproc WallBoard

British Gypsum Approved System England, Wales and Scotland

Post installation shrinkage of timber joists, if excessive, can cause fixing defects. The use of Gypframe RB1 Resilient Bar can eliminate the problem.

Engineered timber I with PSR C204008 186 Gypframe RB1 Resilient Bar 18mm (minimum) t&g chipboard walking surface (minimum weight 15kg/m2)

Rw 44 dB Minimum 240mm deep engineered I joists at 450mm centres Gypframe RB1 Resilient Bars at 450mm centres Single layer of 15mm Gyproc WallBoard

British Gypsum Approved System England, Wales and Scotland

For details regarding the fire resistance performance of this construction, advice should be sought from the I joist manufacturer. living spaces Creating perfect 212 Technical Advice Centre Tel: 0115 945 6123 07

Construction details – Standard performance (Scotland) / Standard plus performance (England and Wales) (cont’d) Timber joist floors

Solid timber joists and PSR C016031 187 Gypframe RB1 Resilient Bar 18mm t&g chipboard flooring, minimum 195mm deep solid joists at 450mm centres Rw 45 dB or 22mm t&g chipboard flooring minimum 195mm deep solid joists at 60 mins BS 600mm centres Gypframe RB1 Resilient Bars at 450mm centres Lined with a double layer of 12.5mm Gyproc FireLine

British Gypsum Approved System England, Wales and Scotland

Post installation shrinkage of timber joists, if excessive, can cause fixing defects. The use of Gypframe RB1 Resilient Bar can eliminate the problem.

Room-in-the-roof This construction meets current legislation (national Building Regulations Approved Document B) in situations where the internal floor construction in a room-in-the-roof is required to achieve 60 minutes fire resistance.

Solid timber joists 188 (Internal floor type C) Timber joist floor with wood based flooring minimum 15kg/m2 surface mass Generic Internal 100mm Isover Acoustic Partition Roll Construction (APR 1200) Lined with a double layer of 12.5mm Gyproc WallBoard TEN or a double layer of 12.5mm Gyproc SoundBloc

Generic Internal Construction Creating perfect perfect Creating

Scotland spaces living

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Timber joist floors

Silent Floor 189 22mm t&g chipboard flooring Minimum 240mm deep engineered I joists Silent Floor 100mm Isover Acoustic Partition Roll performance (APR 1200) levels (see page 236) Gypframe RB1 Resilient Bars at 450mm centres Lined with a double layer of 15mm Gyproc SoundBloc

British Gypsum Approved System England, Wales and Scotland living spaces Creating perfect 214 Technical Advice Centre Tel: 0115 945 6123 07

Construction details – Superior performance (cont’d)

Controlling the volume

Delivering substantially enhanced levels of sound insulation, our enhanced ceiling systems enable different members of the family to turn it up loud or enjoy a quiet night’s sleep without any compromise.

At home with noise Restoring harmony Some things just need to be enjoyed loud! The simple fact is that activities in the home are not always compatible and one person’s enjoyment is another person’s Having friends round, listening to music, watching films, pet hate, with noise being the most common complaint cheering on the football, playing video games or practising among families. Construction details 176 and 189 provides a instruments, our enhanced partition and ceiling solutions, substantial improvement over a standard building regulation meeting Silent Floor performance levels, can let families floor, giving families the possibility to enjoy their home in do all these without worrying that they’re disturbing more ways than one. anybody else. The British Gypsum difference Peace and quiet The secret of our partition and ceiling systems lies in the Noise breakthrough from other rooms can be annoying for resiliently mounted ceilings and Gyproc SoundBloc linings. anyone. This is especially true for people working nightshifts These solutions outperform standard details by up to 15 dB - or lodging in rented rooms. Equally, there are some areas a substantial improvement. of the home, such as nurseries, studies, bedrooms, and personal libraries, where quietness is especially valued. Silent Wall and Floor performance ensures everyone has the peace they need. Creating perfect perfect Creating living spaces living

[email protected] british-gypsum.com 215 07 Acoustic ceilings living spaces Creating perfect 216 Technical Advice Centre Tel: 0115 945 6123 07 Acoustic ceilings

A ceiling is unlike any other area within a building. The look you create will remain untouched, uncluttered and unaffected by any other objects, and as such the ceiling can play a major role in your creative vision for the space. A well-designed ceiling can enhance the way an area looks, sounds and feels.

The British Gypsum range of acoustic ceilings combine contemporary, stylish design with outstanding acoustic performances. The Rigitone and Gyptone systems provide virtually unlimited design scope for creating stunning spaces.

TIV AC air technology: Creating the perfect atmosphere

Improving the indoor environment is a major consideration.

People often experience health problems, with symptoms ranging from headaches and nausea to chronic fatigue and breathing difficulties, after extended periods of time spent indoors. Many of these systems can be attributed to Volatile Organic Compounds (VOCs).

VOCs are emitted into our homes by people, pets, cleaning products as well as furniture carpets, paints and varnishes. ACTIVair from British Gypsum is a new technology that absorbs VOCs from the room interior and breaks them down into harmless inert compounds, eliminating the risk of re-emission. ACTIVair decomposes up to 70% of VOCs in a controlled test environment.

Our VOC-absorbing ACTIVair technology is now included in many Gyptone products as standard, allowing you to create a ceiling that not only improves the look and feel of a space, but also the quality of the air within.

Acoustic ceilings in communal areas

National Building Regulations Approved Document E was updated in 2010 to build on best practice. Section E3 of the regulations covers reverberation noise in the common internal parts of buildings containing flats or rooms for residential purposes. The regulations state that:

‘The common internal parts of buildings which contain flats or rooms for residential purposes shall be designed and constructed in such a way as to prevent more reverberation around the common parts than is reasonable.’

Lining the common internal parts of buildings with sound absorbing materials can effectively control reverberation, however the introduction of these materials into communal areas can create real design issues. Using carpets that are capable of giving the high levels of sound absorption required, for instance, can lead to problems with ongoing maintenance and long term durability. Equally, installing common mineral fibre tiles on exposed metal grids can give areas an institutional feel and detract from the overall building design.

With a track record of use in some of the most prestigious buildings in the UK and throughout Europe, British Gypsum ceilings create flexibility in design and construction.

The range of ceiling tiles, planks and boards have all of gypsum’s own unique strength and acoustic qualities.

The wide range of innovative and contemporary designs provide interior designers with inspiration and flexibility, enabling them to realise fully the visual and acoustic ambience of their designs. Creating perfect perfect Creating

Installers and users benefit as well. Installation is rapid and simple. Designed for low maintenance and high durability, a spaces living British Gypsum ceiling is an investment that keeps performing year after year, plus it can be redecorated without affecting performance.

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Sound absorption legislation requirements

What is reverberation? In our experience Method A is the most common practice In acoustics, reverberation refers to the multiple reflections, and easier to comprehend. In comparison to Method A, or echoes, of sounds inside a building that merge and persist Method B takes into account existing absorption provided a short time (up to a few seconds) before fading away. by all surfaces. However, the method is more complex and At each reflection, some of the sound energy is absorbed, requires knowledge of all materials to be used for lining the causing the amplitude of the sound wave, and the intensity area and their sound absorption coefficients. Therefore in of the sound, to reduce. this publication we refer to Method A only. If you want to use Method B please refer to ‘Building Regulations Approved The problem of reverberation Document E, section 7: Reverberation in the common internal parts of buildings containing flats or rooms for In increasing numbers, people living within apartments residential purposes.’ complain about the noise generated within their apartment buildings. The use of hard floor surfaces and high ceilings are a major contribution to this unwanted noise. Sounds To simplify the specification of generated in communal spaces, that continue unabated, will materials, the sound absorption tend to build up in intensity and cause noise nuisance and disturbance within adjacent living areas. performance can be quoted as an absorber Class. Controlling reverberation Building Regulations Approved Document E offers guidance on how to provide reasonable standards of sound insulation There are five classes (A through to E) in dwellings and other residential buildings, for both with Class A signifying the products new-build and refurbishment / conversions. with the highest level of sound Section E3 of these regulations covers reverberation noise in absorption. However, to comply with the common internal parts of buildings containing flats or rooms for residential purposes. Approved Document E using method A, only class C or D is required. Requirement E3 applies to all corridors, stairwells, hallways

and entrance halls that give access to, or are adjacent to, Please note, sound absorbing ceilings are required as a separate entity to any the flat or rooms being used for residential purposes. Lining sound insulation requirements. For example, sound absorbing ceilings should ceilings and walls with sound absorbing materials can be installed below the relevant sound insulating and fire protective ceiling. effectively control reverberation. The regulations give two Please refer to pages 105 - 134. methods of calculating the amount of absorption required in any communal areas. The two methods are referred to as ‘Method A’ and ‘Method B’. living spaces Creating perfect 218 Technical Advice Centre Tel: 0115 945 6123 07 Sound absorption in communal areas

Method A

Entrance halls, corridors or hallways Cover an area equal to, or greater than, the floor area, with a Class C absorber or better. It is normally more practical to cover the ceiling area with the required absorption.

Stairwells or stair enclosures Calculate the combined area of the stair treads, the upper surface of the intermediate landings, the upper surface of the landings (excluding ground floor) and the ceiling area of the top floor. Either cover at least an area equal to this calculated area with a Class D absorber, or cover an area equal to at least 50% of this calculated area with a Class C absorber or better.

The absorption material should be equally distributed between floor levels. It will normally be convenient to cover the underside of intermediate landings, the underside of the other landings, and the ceiling on the top floor.

However, where there is insufficient ceiling area available, the absorptive materials can be applied to any surface. In this case, the use of Gyptone boards as wall linings would be a suitable solution.

Entrance halls, corridors or hallways Method A requires a Class C absorber with an area equivalent to the floor area to be installed in the corridor. Where the corridor width exceeds 1200mm, e.g. one full board width, it may be desirable to install a plain board border. This is possible using all Class C absorbers listed below. For example, Gyptone QUATTRO 41 boards can be installed with an area equivalent to 10% of the total ceiling area being plain board. This area can be increased to 24% of total ceiling area if a 50mm Isover Acoustic Partition Roll (APR 1200) insulation is included in the cavity. These plain board areas are in addition to the areas of unperforated board that form part of the Gyptone QUATTRO board. Creating perfect perfect Creating living spaces living

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Product range Product Minimum Isover Acoustic Sound System cavity / plenum Partition Roll absorption class reference (mm) (APR 1200) insulation (mm)

Gyptone tile Gyptone SIXTO 60 300 (min) 50 Class B C10A105

Gyptone LINE 4 45 (min) 50 Class C C10A094

Gyptone LINE 4 45 (min) N/A Class C C10A005

Gyptone QUATTRO 20 200 (min) N/A Class C C10A003

Gyptone QUATTRO 50 200 (min) N/A Class C C10A109

Gyptone SIXTO 60 45 (min) N/A Class C C10A099

Gyptone plank Gyptone LINE 8 Plank 200 (min) N/A Class C C10A009

Gyptone POINT 15 Plank 200 (min) N/A Class C C10A010

Gyptone QUATTRO 55 Plank 200 (min) N/A Class C C10A034

Gyptone board Gyptone QUATTRO 41 45 (min) N/A Class C C10A092

Gyptone SIXTO 63 58 (min) N/A Class C C10A114

Gyptone LINE 6 45 (min) N/A Class D C10A012

Gyptone QUATTRO 42 45 (min) N/A Class D C10A110

Gyptone QUATTRO 47 45 (min) 50 Class D C10A017

Rigitone board Rigitone 12/25 Q 200 50 Class B C10A132

Rigitone 8/18 Q 200 25 Class B C10A126

Rigitone 12/25 Q 50 (min) N/A Class C C10A131

Rigitone 15/30 Q 50 (min) 50 Class C C10A096

Rigitone 8/18 50 (min) 50 Class C C10A095

Rigitone 10/23 50 (min) N/A Class D C10A038

Rigitone 12/25 50 (min) N/A Class D C10A127

Rigitone 12-20/66 50 (min) N/A Class D C10A042

Rigitone 8-15-20 SUPER 200 N/A Class D C10A059 living spaces Creating perfect 220 Technical Advice Centre Tel: 0115 945 6123 07

For the equivalent percentage of plain board of all Class C absorbers, see table below.

Percentage area of plain board

Product Without insulation Without insulation as specified

Gyptone LINE 4 - 13%

Gyptone QUATTRO 41 10% 24%

Gyptone QUATTRO 45 6% 19%

Gyptone QUATTRO 55 10% 24%

Gyptone POINT 11 5% 5%

Rigitone 15/30 - 7%

For example A corridor 1.5m wide x 10m long, total area = 15m2.

1.2m wide Gyptone QUATTRO 41 board is fixed down the centre of the corridor with a 150mm wide border of plain board.

Area of Gyptone board = 12m2 = 80% Area of plain board = 3m2 = 20%

In this case it would be necessary to install 50mm Isover Acoustic Partition Roll (APR 1200) within the cavity.

Gyptone board 1.5m 1.2m Gyptone board

Gyproc WallBoard 10m Gyproc WallBoard Creating perfect perfect Creating living spaces living

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Stairwells or stair enclosures

Example Area of stair treads = 20 stairs x 1.2m wide x 0.25m deep = 6m2

Area of intermediate landings = 1.6m x 1.6m = 2.56m2

Top floor ceiling area = 3.8m x 4.3m = 16.34m2

Total area = 24.9m2

Solutions Install 12.5m2 of Class C absorber, e.g. Gyptone QUATTRO 41 on CasoLine MF or Install 24.9m2 of Class D absorber, e.g. Gyptone LINE 6 on CasoLine MF

Corridor or hallway

Example Total corridor area = (1.8m x 14.4m) = 25.92m2

Solutions Install 25.92m2 of Class C absorber, e.g. Gyptone QUATTRO 41 on CasoLine MF or Gyptone QUATTRO 55 Plank on CasoLine GRID

NB The examples above utilise ‘Method A’ as defined in national Building Regulations Approved Document E. living spaces Creating perfect 222 Technical Advice Centre Tel: 0115 945 6123 07 British Gypsum acoustic ceiling products

Rigitone boards

Rigitone 8/18 Rigitone 8-15-20 SUPER Rigitone 8/18 Q Rigitone 12-20/66

Rigitone 12/25 Rigitone 12/25 Q Rigitone 15/30 Rigitone 10/23

Gyptone boards

Gyptone QUATTRO 41 Gyptone QUATTRO 42 Gyptone QUATTRO 46 Gyptone QUATTRO 47

Gyptone LINE 6 Gyptone SIXTO 63 Gyptone BASE 31 Gyptone LINE 7 Curve Creating perfect perfect Creating living spaces living

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British Gypsum acoustic ceiling products (cont’d)

Gyptone tiles

Gyptone QUATTRO 20 Gyptone QUATTRO 22 Gyptone QUATTRO 50 Gyptone POINT 11

Gyptone POINT 12 Gyptone LINE 4 Gyptone SIXTO 60

Gyptone QUATTRO 55

Gyptone LINE 8 Plank

Gyptone POINT 15 Plank living spaces Creating perfect 224 Technical Advice Centre Tel: 0115 945 6123 07

British Gypsum acoustic ceiling products (cont’d)

Gyptone tiles

A range of tiles with square perforations and a special sound absorbent tissue backing, providing a jointless finish that is ready for on-site decoration. You can choose from five eye-catching designs, inspired by a theme of basic geometric patterns, to create the visual effect that you want. These tiles are pre-finished in white.

Gyptone tiles are available with ACTIVair technology.

Gyptone QUATTRO 20 CasoLine QUICK-LOCK GRID suspended concealed grid ceiling system

Typical component list

Gypframe CasoLine MF MF12 Soffit Cleat

Suspension wire (14swg)

Wall Angle CLWA02 24mm x 19mm x 3000mm

CasoLine QUICK-LOCK GRID Main Tee 24/38 CLT2401 24mm x 3600mm

CasoLine QUICK-LOCK GRID Cross Tee CLT24D101 24mm x 600mm

CasoLine QUICK-LOCK GRID Wall Spring Clip CLC02 Creating perfect perfect Creating living spaces living

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British Gypsum acoustic ceiling products (cont’d)

Gyptone planks

Providing an innovative and exciting combination of design and performance, with limitless options for building interiors. A fully demountable system giving complete uninterrupted access to the ceiling cavity and the ideal solution for corridors. Available in Gyptone QUATTRO, Gyptone POINT or Gyptone LINE patterns pre-finished in white.

Gyptone QUATTRO 55 (2400mm) CasoLine QUICK-LOCK GRID suspended grid plank ceiling system

Typical component list

CasoLine QUICK-LOCK GRID Main ‘T’ section CLT15P01 - E15 x 1800mm CLT15P02 - E15 x 2100mm CLT15P03 - E15 x 2400mm

CasoLine QUICK-LOCK GRID Shadowline Moulding CLSM04 - 3000mm

Optional British Gypsum Wafer Head Jack-Point Screws 13mm

Wall Angle CLWA02 24mm x 19mm x 3000mm living spaces Creating perfect 226 Technical Advice Centre Tel: 0115 945 6123 07

British Gypsum acoustic ceiling products (cont’d)

Gyptone boards

An inspired range of new generation ceiling and wall lining design, providing the ideal solution for communal areas. Their geometric patterns with an integral sound absorbent tissue backing provides high levels of acoustic performance. Boards can also be curved to a minimum radius of 1200mm for dramatic ceiling effects.

Gyptone boards are available with ACTIVair technology.

Gyptone LINE 6 CasoLine MF suspended ceiling system for board solutions

Typical component list

Gypframe MF12 Soffit Cleat Gypframe MF5 Ceiling Section 27 x 37 x 25 x 1.6mm 80 x 26 x 0.50mm 3600mm length

Gypframe MF11 Nut and Bolt Gypframe MF9 Connecting Clip 6.4mm x 12.5mm 2.65mm gauge

Gypframe MF8 Strap Hanger British Gypsum Wafer Head 25 x 0.55mm Jack-Point Screws 25m length 13mm

Or Gypframe GA1 Steel Angle British Gypsum Drywall Screws 25 x 25 x 0.55mm 25mm for single layer 2900mm length (Gyptone)

Gypframe MF6 Perimeter Channel 20 x 27 x 30 x 0.50mm 3600mm length

Gypframe MF7 Primary Support Channel

15 x 45 x 0.90mm perfect Creating

3600mm length spaces living

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British Gypsum acoustic ceiling products (cont’d)

Rigitone boards

Allows you to create stunning, seamless, high performance design with the grid completely out of sight. Secured to our CasoLine MF system, Rigitone boards come in eight distinctive perforation patterns that join together to given an unbroken regular or random, flat or curved pattern (minimum radius of 1200mm) across the entire ceiling area.

Rigitone 8-15-20 SUPER living spaces Creating perfect 228 Technical Advice Centre Tel: 0115 945 6123 07 British Gypsum ceiling systems

Timber joist floor with 190 secondary acoustic ceiling

18mm chipboard walking surface 19mm Gyproc Plank 50mm timber battens 15mm wood based sub-deck Timber Joists 100mm Isover Acoustic Partition Roll (APR 1200) Gypframe RB1 Resilient Bars at 400mm centres Two layers of 15mm Gyproc SoundBloc Continuous Gypframe GA1 Steel Angle at 1200mm centres fixed through plasterboard to all resilient bars Gypframe GL5 or GL6 Timber Connector at 1200mm centres fixed to steel angle with British Gypsum Wafer Head Screws Gypframe GL1 Lining Channel at 600mm centres 12 12.5mm Gyptone acoustic boards

Timber rafter ceiling with 191 secondary acoustic ceiling Isover insulation Timber rafters Gyproc plasterboard Gypframe GL2 or GL9 Brackets at maximum 1200mm centres fixed through plasterboard to timber rafters Gypframe GL1 Lining Channel at 600mm centres 12.5mm Gyptone acoustic boards Creating perfect perfect Creating living spaces living

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The tried and tested finish for every situation

Creating that great finish Homeowners are quick to notice a poor quality finish. With Thistle finishing plasters, you get a superior finish, smooth surface whether you’re skimming on plasterboard or using Finishing Gyproc Habito a two-coat plaster system. And it’s ready to take whatever When installing Gyproc Habito onto a metal frame, decorative treatment you choose. tape and joint preparation is recommended and approved by British Gypsum. For timber frame and Jointing blockwork, Gyproc Habito can be finished as normal. Gyproc jointing materials produce durable joint reinforcement and a smooth, continuous, crack-resistant surface ready Board types for priming and final decoration. They also seal the lining, T/E - for taped and filled joints using Gyproc jointing a prerequisite if the building element is to achieve specified materials or application of Thistle BoardFinish, levels of fire resistance and sound insulation. The materials Thistle MultiFinish, Thistle DuraFinish or Thistle can be applied either manually using hand tools, or SprayFinish plasters. mechanically, using a mechanical jointing system. A number of jointing specifications are available to suit the board type, Plastering method of application, and site preference. The jointing The face (ivory) of Gyproc Habito can be plastered process normally involves three application stages; bedding with either Thistle BoardFinish, Thistle MultiFinish, the tape and bulk filling the joint, secondary filling to take up Thistle Magnetic Plaster, Thistle DuraFinish or Thistle shrinkage, and finishing. After drying, the complete surface is SprayFinish plasters. There should be the minimum treated with Gyproc Drywall Primer or Gyproc Drywall Sealer. of delay between completion of the lining and the commencement of plastering. Plaster skimming Where plasterboard has a square edge, or a cut edge, Jointing skimming is the best way to provide a smooth finish ready Gyproc jointing materials produce a smooth, for decorating. Skim plastering gives many of the advantages continuous, crack-resistant surface ready for of a traditional solid plaster finish combined with quick priming and final decoration. A number of jointing turnaround on site. Surface preparation simply involves specifications are available to suit the board type, joint reinforcement and, if tapered edge board is used, method of application and site preference. flushing-out the tapers. The plaster is applied to the wall or ceiling surface to a nominal 2mm thickness. Skimming with a finish plaster can also provide the installer with added flexibility where screw fixings are not perfectly flat.

It is much harder to achieve a smooth result with a tape Ceiling with skim finish plaster is the best way to and joint method when the board edge is not tapered provide a smooth finish ready for decorating Creating perfect perfect Creating living spaces living

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Where to use a skim finish

A skim finish not only provides a better finish, it is also more robust, providing additional resistance to damage in high traffic areas or rooms subject to greater wear and tear.

The solid green line shown on the example layouts below, indicates where a skim finish on plasterboard provides the best protection on walls which have to withstand regular abrasion.

The dotted line denotes areas where either a skim finish or plasterboard which is taped and jointed can be used.

Ground Floor First Floor

EN-SUITE BEDROOM MASTER LOUNGE 2 BEDROOM

KITCHEN/DINING W CYL

PLAY ROOM ST BATHROOM

ST BATHROOM PLAY ROOM

CYL W KITCHEN/DINING = skimmed plasterboard = taped and jointed / skimmed plasterboard MASTER BEDROOM = resistanceLOUNGE to damage BEDROOM 2 EN-SUITE = Robust details living spaces Creating perfect 232 Technical Advice Centre Tel: 0115 945 6123 07 Product focus

Thistle Durafinish Thistle Durafinish is 60% tougher than a standard skim finish plaster.

A regular plaster is ideal for some areas. But for the more hardworking parts of a home - a hallway, staircase or communal area within apartment developments - you need a finish that can withstand everyday knocks and scrapes, and general wear and tear.

Thistle Durafinish is a gypsum finish plaster specially formulated for increased resistance to accidental damage; proven to provide significantly increased performance when compared with a regular plaster. It can be used on plasterboard or undercoat plasters, or for replastering and repair work on previously finished walls.

Thistle Durafinish creates an environment conducive to living, working and playing. Creating perfect perfect Creating living spaces living

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234 Technical Advice Centre Tel: 0115 945 6123 07 ‘Rooms made for you’

What we can do to help you support your customers

British Gypsum is continually innovating to support everyday homemaking. We have developed a ‘Rooms made for you’ offer to provide flexibility, easy personalisation of rooms, and the reduction of noise transfer within a home.

We’re working within the residential industry to facilitate differentiation of the homes you build; adding value to your business, and your customers’ lives.

Designed for life, our Lifestyle Wall helps transform homes in all sorts of ways. A wall that doesn’t require specialist fixings, is stronger, more durable, more sound-resistant and more user-friendly than standard plasterboard walls will significantly enhance homeowner’s living space.

Personalisation made easy Total freedom to fix shelves, curtain poles, picture hooks and TV’s in place without the need for specialist fixings or drills.

Feel the difference Reassuringly solid and dependably strong, homeowners can actually feel how different they are from standard plasterboard just by touching them.

For protection Our Lifestyle Wall offers a superior resistance to everyday wear and tear.

The British Gypsum difference The secret of its effectiveness lies in an innovative building board technology that features a dense reinforced core, providing considerably more strength than standard plasterboard. Creating perfect perfect Creating living spaces living

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‘Rooms made for you’ (cont’d)

Designed for sound, the Silent Floor system can help bring harmony back to homes. Delivering substantially enhanced levels of sound insulation, our Silent Floor system enables different members of the family to turn it up loud or enjoy a quiet night’s sleep without any compromise.

Enjoying sound Some things just need to be enjoyed nice and loud! Have friends round, listen to music, watch films, cheer on the football, play video games or practise instruments; Silent Floor can deliver this, without homeowners worrying about disturbing anyone else.

Peace and quiet There are some areas of the home, such as nurseries, studies, bedrooms, and personal libraries, where quietness is especially valued. Silent Floor can ensure everyone has the peace they need.

Restoring harmony Noise is the most common complaint among families. Silent Floor provides a substantial improvement over a standard building regulation floor, creating the possibility for homeowners to enjoy their home in more ways than one.

The British Gypsum difference The secret of our Silent Floor system lies in the combination of the resiliently mounted ceilings and Gyproc SoundBloc lining. These floors outperform standard floors by up to 15 dB - a substantial improvement. living spaces Creating perfect 236 Technical Advice Centre Tel: 0115 945 6123 07

‘Rooms made for you’ (cont’d)

Designed for creativity, Thistle Magnetic Plaster helps bring walls to life. With a plaster that attracts magnets you can turn any wall in any room into an inspiring interactive gallery or notice board that homeowners can change as often as they like: no fuss, no mess.

For display With our magnetic plaster walls, homeowners can personalise spaces one day then change it around the very next. Decorating and accessorising becomes simplicity itself.

For work An asset to any home office, Thistle Magnetic Plaster lets homeowners organise their thoughts and plans and even display training certificates.

For playing and learning Create a fun activity space or an interactive classroom, kids get both from our magnetic plaster walls. They can put up their favourite posters, play educational games or display their latest artwork with ease.

For the kitchen Forget the fridge door. Now homeowners can use their kitchen walls for displaying family timetables, recipes, reminder notes, important contact information and, of course takeaway menus!

The British Gypsum difference Thistle Magnetic Plaster can be applied at a 3mm thickness to new or existing walls. It can be decorated with standard emulsion plaint or combined with specialist paint finishes, including blackboard and whiteboard.

Calling all housebuilders

If you are interested in talking to us about our new product range, and how we can help you differentiate your homes from the competition, please get in touch with us. We are looking for partners to help us develop the next generation of products for homeowners; adding value to your business, and your customers’ lives.

For further information, please contact our Technical Advice Centre We’re open Monday to Friday, 08:30 to 17:00, and our team will be happy to discuss this further: Tel: 0115 945 6123 Creating perfect perfect Creating

Email: [email protected] spaces living

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