ROOF TILES Build Something Great™
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BORAL ROOF TILES Build something great™ Roof Tiles TECHNICAL INFORMATION GUIDE www.boral.com.au/rooftiles April 2015 Roof Tile Manual Contents Introduction 3 Concrete Roof Tiles 27 Foreword 4 Capri SA 28 Important 4 Contour NSW, VIC 29 Quality Control 4 Linea NSW 30 Specifications 4 Linea SA 31 Local Authorities 4 Linea VIC 32 Performance 4 Macquarie NSW, VIC 33 Safety 4 Slimline NSW, VIC 34 Terracotta 5 Striata SA 35 Concrete 5 Striata VIC 36 Roofing Terminology 6 Vogue NSW 37 Vogue SA 38 Design Considerations 11 Vogue VIC 39 Code Considerations 12 Standards 12 Accessories 41 Bushfire Attack Levels (BAL) 12 Terracotta Accessories 42 Wind Forces 12 Concrete Accessories 44 Terrain Categories 13 General Accessories 45 Basic Wind Regions 14 Installation Details 47 Fixing Tile Roofs in Cyclonic Regions 15 Preparation for Installation 48 Minimum Roof Pitch 15 Tile Set Out 48 Maximum Rafter Lengths 15 Counter Battens 51 Maximum Rafter Lengths - No Sarking 15 Valleys 52 Sarking 16 Fascia Height 52 Insulation 16 Barge Height 53 Ventilation 16 Anti-Ponding Boards 53 Performance Characteristics 17 Laying the Roof 53 Thermal Performance 18 Roof Tile Fixing Systems 54 Acoustic Performance 18 Sarking 55 Water Collection 18 Ridge Systems 56 Testing: AS 2049 - Roof Tiles 20 Ridge Installation 56 Testing: AS 2050 - Installation of Roof Tiles 20 Hip Details 58 Fire Resistance 21 Valley Boards 58 Sarking at Valleys 58 Terracotta Roof Tiles 23 Valley General 59 French 24 Barge/Gable Systems 59 Shingle 25 Roof and Flashings Details 61 Swiss 26 Bedding and Pointing 63 Roof Completion 63 Architectural Details 65 Frequently Asked Questions 76 Contacts and Further Information 80 2 April 2015 | BORAL ROOF TILES Introduction Roof Tile Manual Introduction Foreword Local Authorities This manual has been prepared to assist the builder, architect Fixing standards and product specifications contained in this leaflet and installer, to specify, detail, prepare and install Boral roof tiles. are minimum recommendations based on Australian Standards and While it is not possible to list and detail every condition that may be good trade practice. It is however recommended that local authorities encountered, Boral Roof Tiles will assist and advise on any special are consulted as they may require different standards to be met. situations that may occur. It should be noted that the manual has been written as a working Performance guide for industry, however it is not intended to replace good trade Boral roof tiles should perform as specified if fixed in accordance practice and the long trade experience essential to obtain a quality with good trade practice and recommendations set down in this and roof installation. other relevant literature. The objective of these specifications is to provide up-to-date Important information for architects, building contractors and all persons All care has been taken in the compilation of this manual, however responsible for purchasing and installing roof tiles. The material Boral Roof Tiles accepts no responsibility nor liability for the covers the range of Boral roof tiles and accessories available contents of the manual (including any printing or typographical in Australia, and the preferred methods and standards for fixing errors) and recommends that all standards, specifications and tiles, including special treatments. recommendations be independently checked. The following points should be noted: These roof tile fixing specifications should be applied in the • The need to encourage the highest standards of trade practice following context - in conjunction with, but subordinate to, the to ensure long lasting and attractive roof finishes. Building Code of Australia, Australian Standards, State codes • The need to encourage compatibility between overlapping and regulations. trades on building sites. Architects and specifiers should not only ensure that the details • The full range of products may not be available or applicable provided in this manual are followed, but should determine to to all states at this time. their own satisfaction that the job is completed to an acceptable • Uniform fixing methods are given but there are some variations standard of trade practice. in procedure from state to state. Advice should be obtained locally. Note: Special fixing standards apply to designated high wind areas. The instructions and details in this manual refer to both concrete and terracotta tiles (except where specifically noted). Safety Quality Control Federal, State and Territory OHS Acts and Regulations and Codes of Practice set out specific safety requirements and arrangements Boral Roof Tiles maintains a fully staffed Quality Control Laboratory. for working at heights that every workplace shall enforce in order to The product is tested for weight and dimensional stability, transverse meet their legal responsibility of providing a safe working environment. strength, water absorption, permeability and colour consistency. The following minimum mandatory requirements shall be implemented to ensure Boral workplace compliance in relation to Specifications working at heights: Production information contained in this leaflet is correct at the • The site/operations manager or their delegate shall identify time of printing, however specifications are subject to change tasks and locations that are likely to require working at heights without notice. and record tasks. Boral Roof Tiles liability is limited to the replacement of product • A Safe Work Method Statement (SWMS) shall be completed should it fail to perform as specified in literature current at the date and approved by a competent Supervisor before any work of manufacture. occurs and whether the scope of work changes or the risk of a fall increases. 4 April 2015 | BORAL ROOF TILES Roof Tile Manual » Introduction • The site/operations manager or their delegate shall design Terracotta and implement safe access systems, where required. Meaning ‘baked earth’ in Italian, terracotta, as the name suggests • Controls shall be implemented to reduce risks to as low as is a natural clay product that has been used throughout the ages for reasonably practicable when working at heights is required. protection against the elements. • Forklift work platforms are not permitted to be used. Boral terracotta tiles are manufactured using prepared clays that • Personal fall-arrest equipment should only be used when all other control measures have been explored and deemed to be are kiln-fired to temperatures of 1100°C, resulting in a strong yet not reasonably practicable. lightweight roofing material of exceptional quality. • Where electrical power lines are in the working at heights area, electricity network supplier shall be contacted to Natural Beauty of Terracotta determine clearances. High Quality Premium finish • All equipment shall be fit for its intended purpose and pre-start Made from natural clay, terracotta tiles exude character and quality checks shall be undertaken before use. that cannot be replicated. Various finishes are available with a Working on Roofs choice of full glazed, semi-glazed, matt glazed or un-glazed tiles. • All work on roofs shall be conducted in accordance with Superior Colour-fast properties regulated Australian Standards and relevant Codes of Practice. The outstanding colour performance of glazed, semi-glazed, matt • Where personnel are required to work within two metres of glazed and un-glazed terracotta tiles is achieved during the firing a roof edge, or on brittle or fragile material, fall-prevention measures shall be utilised unless otherwise qualified in relevant process at temperatures of 1100°C. The process known as vitrification Codes of Practice. provides a finished tile resistant to harsh UV exposure. The colour is “locked in” and will remain vibrant for years to come. • Permanent or temporary guard rails and walkways are preferred; however, if these are not practicable, alternative Design Flexibility control measures shall be used (eg static line systems or scaffolds). Terracotta roof tiles offer three distinct profiles; Shingle, French and Swiss • Brittle or fragile roofing materials shall be protected with for greater design flexibility to achieve a wide range of house designs. appropriately secured wire to protect inadvertent falls through the material. Concrete Modern concrete tiles, made from cement, graded sands and Other Safety Considerations pigments, can replicate the appearance of a broad array of • Take care when moving or unpacking. Personal protection distinctive tile designs. As such they offer the widest selection of equipment, including eye protection, should be worn at all profiles and colours, while remaining relatively cost-effective. times when handling roof tile packs and cutting straps. Straps are under tension and may snap and/or recoil. Additionally, roof Boral concrete tiles are manufactured using an extrusion process tiles may collapse when unwrapped. resulting in the utmost strength and density. Following moulding • Avoid inhalation of dust when cutting roof tiles as it may and colouring we apply a sealant finish that protects against contain traces of crystalline silica. Take care by wearing efflorescence, a salty white deposit that can form on masonry and appropriate PPE such as eye protection and a Class P1 concrete products. (particulate) dust mask. Numerous accessories are available to enhance the overall • Please refer to MSDS for specific safety information, available appearance of a concrete tiled roof. at www.boral.com.au