Easy Loft BBA Certificate
Total Page:16
File Type:pdf, Size:1020Kb
APPROVAL INSPECTION Carpenter Ltd TESTING CERTIFICATION Dinting Lodge Industrial Estate TECHNICAL APPROVALS FOR CONSTRUCTION Glossop Derbyshire SK13 6LE Agrément Certificate Tel: 01457 861141 Fax: 01457 892424 e-mail: [email protected] 10/4764 website: www.carpenter.com Product Sheet 1 CARPENTER LOFT INSULATION EASY LOFT FOR LOFT APPLICATIONS PRODUCT SCOPE AND SUMMARY OF CERTIFICATE This Certificate relates to Easy Loft for Loft Applications, for use between and over ceiling joists in ventilated or unventilated pitched roofs in dwellings or buildings of similar occupancy. AGRÉMENT CERTIFICATION INCLUDES: • factors relating to compliance with Building Regulations where applicable • factors relating to additional non-regulatory information where applicable • independently verified technical specification • assessment criteria and technical investigations • design considerations • installation guidance • regular surveillance of production • formal three-yearly review. KEY FACTORS ASSESSED λ –1 –1 Thermal performance — the product has a thermal conductivity ( 90/90) of 0.045 W·m ·K and when installed between and over ceiling joists, can enable roofs to achieve typical design U values less than 0.14 W·m2·K. (see section 5). Condensation — the product can contribute to limiting the risk of surface condensation and, for the purposes of assessing the risk of interstitial condensation, the product’s vapour resistivity may be taken as approximately 11 MN·s·g–1·m–1 (see section 6). Behaviour in relation to fire — the product will not contribute to the development stages of a fire (see section 7). Durability — the product is stable, rot-proof and durable and will remain effective as an insulant for the life of the building in which it is installed (see section 10) The BBA has awarded this Agrément Certificate to the company named above for the product described herein. This product has been assessed by the BBA as being fit for its intended use provided it is installed, used and maintained as set out in this Certificate. On behalf of the British Board of Agrément Date of First issue: 1 July 2010 Chris Hunt Greg Cooper Head of Approvals — Physics Chief Executive The BBA is a UKAS accredited certification body — Number 113. The schedule of the current scope of accreditation for product certification is available in pdf format via the UKAS link on the BBA website at www.bbacerts.co.uk Readers are advised to check the validity and latest issue number of this Agrément Certificate by either referring to the BBA website or contacting the BBA direct. British Board of Agrément tel: 01923 665300 Bucknalls Lane fax: 01923 665301 Garston, Watford e-mail: [email protected] Herts WD25 9BA ©2010 website: www.bbacerts.co.uk Page 1 of 8 Regulations In the opinion of the BBA, Easy Loft for Loft Applications, if used in accordance with the provisions of this Certificate, will meet or contribute to meeting the relevant requirements of the following Building Regulations: The Building Regulations 2000 (as amended) (England and Wales) Requirement: C2(c) Resistance to moisture Comment: The product is acceptable. See sections 6.1 and 6.6 of this Certificate. Requirement: L1(a)(i) Conservation of fuel and power Comment: The product can meet or contribute to meeting this Requirement. See sections 5.2 to 5.6 of this Certificate. Requirement: Regulation 7 Materials and workmanship Comment: The product is acceptable. See section 10 and the Installation part of this Certificate. The Building (Scotland) Regulations 2004 (as amended) Regulation: 8(1)(2) Fitness and durability of materials and workmanship Comment: The product can contribute to a construction satisfying this Regulation. See section 10 and the Installation part of this Certificate. Regulation: 9 Building standards – construction Standard: 3.15 Condensation Comment: The product can contribute to a roof satisfying the requirements of clauses 3.15.1(1), 3.15.4(1) and 3.15.6(1) of this Standard. See sections 6.1 and 6.7 of this Certificate. Standard: 6.1(b) Carbon dioxide emissions Standard: 6.2 Building insulation envelope Comment: The product can contribute to a roof satisfying the requirements of these Standards, with reference to clauses 6.2.1(1), 6.2.2(1), 6.2.6(1) to 6.2.9(1) and 6.2.11(1). See sections 5.2 to 5.6 of this Certificate. Regulation: 12 Building standards — conversions Comment: All comments given for this product under Regulation 9, also apply to this Regulation, with reference to clause 0.12.1(1) and Schedule 6(1). (1) Technical Handbook (Domestic). The Building Regulations (Northern Ireland) 2000 (as amended) Regulation: B2 Fitness of materials and workmanship Comment: The product is acceptable. See section 10 and the Installation part of this Certificate. Regulation: C5 Condensation Comment: The product will contribute to enabling a roof to satisfy the Regulation. See section 6.1 of this Certificate. Regulation: F2(a)(i) Conservation measures Comment: The product is acceptable. See sections 5.2 to 5.6 of this Certificate. Regulation: F3(2) Target carbon dioxide Emission Rate Comment: Roofs incorporating the product can satisfy or contribute to satisfying this Regulation. See sections 5.2 to 5.6 of this Certificate. Construction (Design and Management) Regulations 2007 Construction (Design and Management) Regulations (Northern Ireland) 2007 Information in this Certificate may assist the client, CDM co-ordinator, designer and contractors to address their obligations under these Regulations. See section: 11 Installation (11.2) of this Certificate. Non-regulatory Information NHBC Standards 2010 NHBC accepts the use of Easy Loft for Loft Applications, when installed and used in accordance with this Certificate, in relation to NHBC Standards, Chapter 7.2 Pitched roofs. Page 2 of 8 Technical Specification 1 Description 1.1 Easy Loft for Loft Applications is a 100% polyester fibre insulation. 1.2 The product is available in rolls in the sizes as given in Table 1. Table 1 Product details Length Width Thickness Nominal density (mm) (mm) (mm) (kg·m–3) 4000 370 170 15.9 8000 370 170 15.9 2 Delivery and site handling 2.1 The product is delivered to site in packs wrapped in polythene; each pack includes a label bearing the product name, grade, dimensions and the BBA identification mark incorporating the number of this Certificate. 2.2 The product should be stored under cover, and out of contact with ground moisture. 2.3 The product must not be exposed to naked flame or other ignition sources. Assessment and Technical Investigations The following is a summary of the assessment and technical investigations carried out on Easy Loft for Loft Applications. Design Considerations 3 Use 3.1 Easy Loft for Loft Applications is for use between and over ceiling joists in ventilated or unventilated pitched roofs in dwellings or buildings of similar occupancy and deigned and constructed in accordance with the relevant clauses of BS 5534 : 2003. 3.2 The product is for use where the ceiling is horizontal and encloses a loft space. 4 Practicability of installation The product is designed to be installed by a competent general builder, or a contractor, experienced with this type of product. 5 Thermal performance 5.1 Calculations of thermal transmittance (U value) should be carried out in accordance with BS EN ISO 6946 : 2007 and BRE report Conventions for U-value calculations (BR 443 : 2006), using a thermal conductivity ( 90/90) of 0.045 W·m–1·K–1 for the product. 5.2 The U value of a completed roof will depend on the thickness of the insulation used, the extent and arrangement of timber bridging and the insulating value of other roof components/layers. Example U values of roofs incorporating the product are shown in Table 2. Table 2 Example loft U values (W·m–1·K–1) Insulation between Insulation above U-values (W·m–1·K–1) ceiling joists ceiling joists 50 mm timber at 50 mm timber at (mm) (mm) 400 mm centres 600 mm centres 0 0.29 0.27 170 170 0.14 0.13 5.3 When considering insulation requirements, designers should refer to the detailed guidance contained in the documents supporting the national Building Regulations. The U values shown in Table 2 indicate that the product can contribute to enabling a roof to achieve typical design U values referred to in those supporting documents. Page 3 of 8 Table 3 Typical design U values for pitched roofs with insulation at ceiling level — England and Wales, and Northern Ireland Construction type U value (W·m–2·K–1) ‘Notional’ mean in SAP dwellings, domestic and small non-domestic extensions(1) (new, replacement, renovated and retained roofs) and consequential improvements(1) 0.16 Limit mean SBEM for notional buildings 0.25 Limit mean for new-build, flexible approaches and large non- domestic extensions 0.25 Limit individual for new-build and flexible approaches 0.35 (1) Alternative or flexible approaches are given in relevant documents supporting the national Building Regulations. Table 4 Typical design U values for pitched roofs with insulation between ceiling ties or collars — Scotland Construction type U value (W·m–2·K–1) Limit mean for new dwellings simplified approach (all fuel packages) and notional dwellings in SAP and SBEM. Limit mean for conversion of unheated buildings, extensions(1), stand-alone buildings less than 50 m2 and shell and fit out of non-domestic buildings. 0.16 Limit mean for new dwellings 0.20 Limit mean for non-domestic buildings 0.25 Limit individual for new-build, extensions, conversions and shell and fit out in non-domestic buildings and stand-alone buildings less than 50 m2 0.35 (1) Alternative or flexible approaches are given in relevant documents supporting the national Building Regulations.