JAMES HARDIE BUILDING PRODUCTS HARDIEFLOOR

Transcription

1 James Hardie Building Products Ltd 7 Albemarle Street London W1S 4HQ Tel: Fax: info.europe@jameshardie.com website: APPROVAL INSPECTION TESTING CERTIFICATION TECHNICAL APPROVALS FOR CONSTRUCTION Agrément Certificate 13/5057 Product Sheet 1 This Agrément Certificate Product Sheet (1) relates to HardieFloor (2), a fibre cement board for use as structural intermediate internal flooring over timber joists, for a range of floor finishes such as tiles, vinyl and carpets in residential buildings, including high moisture areas. (1) Hereinafter referred to as Certificate. (2) HardieFloor is a registered trademark. 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. JAMES HARDIE BUILDING PRODUCTS HARDIEFLOOR KEY FACTORS ASSESSED Structural performance the product, when incorporated into a structure, can contribute to structural strength and stiffness by distributing the dead and imposed loads to the supporting structure (see section 6). Behaviour in relation to fire the product s reaction to fire classification has been determined (see section 7). Resistance to moisture when installed in accordance with this Certificate, the floor incorporating the product will have an adequate resistance to moisture (see section 8). Durability the product has acceptable durability and provided it is fixed to suitably stable and durable timber floor joists, will have an estimated service life up to 60 years (see section 11). The BBA has awarded this 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: 3 October 2013 Brian Chamberlain Claire Curtis-Thomas Head of Approvals Engineering Certificate amended on 10 November 2014 to include change to density value from to 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 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: Bucknalls Lane fax: Watford mail@bba.star.co.uk Herts WD25 9BA 2013 website: Page 1 of 8

2 Regulations In the opinion of the BBA, HardieFloor, if installed, used and maintained in accordance with this Certificate, will meet or contribute to meeting the relevant requirements of the following Building Regulations (the presence of a UK map indicates that the subject is related to the Building Regulations in the region or regions of the UK depicted): The Building Regulations 2010 (England and Wales) (as amended) Requirement: A1 Loading The product has sufficient strength and stiffness to sustain and transmit design loads to the primary structure without excessive deflection. See section 6 of this Certificate. Requirement: B3(1)(3)(4) Internal fire spread (structure) The product is unrestricted by this Requirement. See section 7 of this Certificate. Regulation 7 Materials and workmanship The product is acceptable. See section 11 and the Installation part of this Certificate.. The Building (Scotland) Regulations 2004 (as amended) Regulation: 8(1) Fitness and durability of materials and workmanship The use of the product satisfies the requirements of this Regulation. See section 11 and the Installation part of this Certificate. Regulation: 9 Building standards applicable to construction Standard: 1.1(a)(b) Structure The product has sufficient strength and stiffness to sustain and transmit design loads to the primary structure without excessive deflection, in accordance with clauses (1)(2), (1)(2) and (1)(2) of this Standard. See section 6 of this Certificate. Standard: 2.1 Compartmentation Standard: 2.2 Separation Standard: 2.3 Structural protection Standard: 2.9 Escape The product is classified as non-combustible and therefore satisfies the requirements of this Standard, with reference to clauses (2), (2), (1)(2), (1)(2), (1)(2), (1)(2), (2), (1), (1) and (1)(2). See section 7 of this Certificate. Standard: 7.1(a) Statement of sustainability The product can contribute to meeting the relevant requirements of Regulation 9, Standards 1 to 6 and therefore will contribute to a construction meeting a bronze level of sustainability as defined in this Standard. Regulation: 12 Building standards applicable to conversions All comments given for this product under Regulation 9, Standards 1 to 6 also apply to this Regulation, with reference to clause (1)(2) and Schedule 6 (1)(2). (1) Technical Handbook (Domestic). (2) Technical Handbook (Non-Domestic). The Building Regulations (Northern Ireland) 2012 Regulation: 23(a)(i)(ii)(b)(i) Fitness of materials and workmanship The product is acceptable. See section 11 and the Installation part of this Certificate. Regulation: 29 Stability The product has sufficient strength and stiffness to sustain and transmit design loads to the primary structure without excessive deflection. See section 6 of this Certificate. Regulation: 35(a)(b) Internal fire spread Structure The product is unrestricted by this Regulation. See section 7 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 sections: 1 Description (1.1) 3 Delivery and site handling (3.1, 3.3 and 3.4) and 12 Installation General (12.1 to 12.3 and 12.5) of this Certificate. Page 2 of 8

3 Additional Information NHBC Standards 2013 NHBC accepts the use of HardieFloor, provided it is installed, used and maintained in accordance with this Certificate, in relation to NHBC Standards, Chapters 5.2 Suspended ground floors and 6.4 Timber and concrete upper floors. CE marking The Certificate holder has taken the responsibility of CE marking the product in accordance with harmonised European Standard BS EN : An asterisk (*) appearing in this Certificate indicates that data shown is given in the manufacturer s Declaration of Performance. Technical Specification 1 Description 1.1 HardieFloor is a heavy duty, lightweight structural fibre cement board, with a moisture protection coating finish. The board has the characteristics of: Thickness (mm)* 19, 22 Width (mm)* 500 Length (mm)* 2400 Density (kg m 3 )* 1080 Edge (long edges) tongue and groove Weight (kg m 2 ) 21 and 24 respectively. 1.2 The boards are made from fibre sheets which satisfy the requirements for Category A Class 2 material to BS EN : Ancillary components used with the board but outside the scope of this Certificate include: adhesive for sealing board joints together (high moisture areas only) and affixing the board to the perimeter and floor joists nails minimum 51 mm long by 2.8 mm diameter corrosion resistant ring shanked D head gun nails screws 51 mm long by 3.5 mm diameter corrosion resistant self-embedding head for screwing to timber joists, for use with 22 mm thick board screws 40 mm long by 3.5 mm diameter corrosion resistant self embedded head for screwing to timber joists, for use with 19 mm thick board. 2 Manufacture 2.1 The boards are manufactured by batch blending, followed by the Hatschek process and high-pressure steam autoclaving. 2.2 As part of the assessment and ongoing surveillance of product quality, the BBA has: agreed with the manufacturer the quality control procedures and product testing to be undertaken assessed and agreed the quality control operated over batches of incoming materials monitored the production process and verified that it is in accordance with the documented process evaluated the process for management of nonconformities checked that equipment has been properly tested and calibrated undertaken to carry out the above measures on a regular basis through a surveillance process, to verify that the specifications and quality control operated by the manufacturer are being maintained. 3 Delivery and site handling 3.1 The boards are delivered on wrapped pallets, each pallet weighing approximately 800 kg. Boards can be offloaded by either mechanical handling equipment or by manually removing individual boards. Protective gloves must be worn while handling boards. 3.2 Each board is marked with the product name, unique manufacturing code, the appropriate classification to ISO 8336 : 2009 and CE marking in accordance with BS EN : The boards should be stored flat, undercover, and on a dry, level surface. Stacks of loose boards should not exceed one metre in height. All edges and corners of the boards must be protected from damage. 3.4 The product includes crystalline silica and reference should be made to EH40/2005. In particular, when cutting, drilling or sanding in confined areas, dust levels should be controlled using suitable extraction equipment. 3.5 Exposure to the elements should be minimised during storage, handling and installation Page 3 of 8

4 Assessment and Technical Investigations The following is a summary of the assessment and technical investigations carried out on HardieFloor. Design Considerations 4 General 4.1 HardieFloor is suitable for use as structural intermediate internal flooring over timber joists in Service Category A Class 2 in accordance with BS EN : 2012 for dry and high moisture conditions in residential buildings. The boards are for use in conjunction with a range of floor finishes, such as tiles, vinyl and carpets. 4.2 In suspended timber floor applications: timber support work must be designed and used in accordance with BS EN : 2004 and/or the relevant Building Regulations timber support joists must be at maximum centres of 450 mm (for 19 mm thick board) and 600 mm (for 22 mm thick board) and a minimum of 45 mm thick (see Figure 1) Figure 1 Timber floor support 45 mm minimum 450 mm maximum joist spacing 45 mm minimum 600 mm maximum joist spacing 19 mm 22 mm ventilation underneath ground floors must be provided in accordance with BS 5250 : The ground beneath the floor should be free of topsoil and vegetation and be covered to resist moisture and prevent plant growth. 4.3 The boards are suitable as part of a floor system comprising tiles, suitable tile adhesive and grout, to install a stable, water-resistant tile floor substrate in showers and bathrooms areas. 4.4 Floors to be tiled should comply with the requirements of BS : 2007, including the provision of movement joints as appropriate. Where necessary, reference should also be made to BS : The board will also provide a suitable substrate for loose-laid floor coverings or those bonded with suitable adhesives. Resilient floor coverings such as cork, linoleum, rubber, or vinyl should be laid in accordance with BS 8203 : The boards have not been assessed for use with underfloor heating systems and its use with such system is outside the scope of this Certificate. 5 Practicability of installation The board is designed to be installed by a competent general builder, or a contractor, experienced with this type of product. 6 Structural performance 6.1 For floor applications, designers need to ensure that the selected panel will meet the load requirements specified in BS EN : Characteristic values for structural design using wood-based flooring may be taken from BS EN : 2010 and used in accordance with BS EN : Deflection must not exceed 1/360 of the span under the live and dead design loads. 7 Behaviour in relation to fire 7.1 The boards will not adversely affect the fire resistance of the floor on which they are installed. Page 4 of 8

5 7.2 When tested to BS EN ISO : 2010 and EN ISO 1716 : 2002, the panel achieved a reaction to fire classification of A2 fl s1* in accordance with BS EN : 2007 and are therefore classified as non-combustible, as defined in the national Building Regulations. 8 Resistance to moisture 8.1 Damp-proof membranes and vapour control layers should be incorporated as necessary in accordance with the requirements of BS : 2009 and BS 5250 : In a floor construction, in calculations for interstitial condensation according to BS 5250 : 2012, the water vapour resistance factor (μ) of the boards can be taken as 300 MN s g If wetted, the boards must be allowed to dry out thoroughly before applying any floor coverings or surface coatings, or applying the full design load. 8.4 When used in high risk areas such as wet rooms, the boards must be protected from wetting with provision of a continuous waterproofing, sealed at wall junctions and where services protrude. 9 Acoustic performance The acoustic performance of floors incorporating the boards will be equivalent or better to timber boards of the same thickness. 10 Maintenance 10.1 As the boards are inaccessible and have suitable durability (see section 11), maintenance is not required. However, care must be exercised to ensure the protective coating of the board is not damaged when the floor finish is removed or replaced The boards will need to be replaced if the floor finish is subsequently removed. 11 Durability Provided the boards are fixed to suitably stable and durable timber floor joists, they will have an estimated service life up to 60 years, provided the protective coating of the board is not damaged. Installation 12 General 12.1 HardieFloor can be cut and fixed using conventional woodworking tools. Normal precautions should be taken to avoid inhalation of silca/mineral dust when cutting, drilling and sanding the panels (reference should be made to section 3.4) The boards can withstand normal site handling and fixing. Damaged panels should not be used. Normal safety precautions should be observed when handling large panels Large cut-outs can be made using a circular saw with a diamond-tipped HardiBlade saw blade. Small holes may be drilled using a carbide-tipped masonry bit, or drilled and broken out with a hammer The floor surface must be reasonably flat and level The boards should be installed in dry conditions. However, the boards are resistant to wet conditions (see section 8.3) but this may have an adverse effect on site safety. 13 Procedure 13.1 The boards must be laid ensuring that all short edges of the flooring are fully supported on joists or perimeter timber framing (ie noggins). A minimum 3 mm gap must be provided between floor perimeter and wall or projections Boards must be cut so that they fit the floor area tightly, with joints staggered in a stretcher-bond brick pattern ensuring four board corners should not meet at one point A continuous bead of adhesive is applied to the joist/frame upper face. Starting from the corner, the first board is laid and mechanically fixed at a maximum 200 mm centres. Fixings are positioned at a minimum of 25 mm from the tongue and groove, 12 mm from plain edge and a minimum of 50 mm from the board corners When used in areas of high moisture, a 2 mm gap is provided at square edges and filled with sealant. The rebate in long joint groove edges of the boards must also be filled with a suitable joint sealant after joining. After the flooring has been mechanically fixed in position, all fixing head points are sealed over On completion, the floor surface is cleaned and the sealant left for at least 24 hours to cure, prior to tiling or other floor finishes being applied The flooring process is shown in Figure 2. Page 5 of 8

6 Figure 2 Installation process 1 Glue applied to joist/perimeter 2 Boards are laid with staggered joints and nailed/screwed 3 For wet areas, all board joints fixing points filled with sealant 14 Finishing Tiling 14.1 The surface of the boards is wiped with a damp sponge to remove residual dirt and dust In wet rooms, a continuous waterproofing (ie PVA) is applied over the boards and sealed at junctions with walls, prior to the floor finishing being laid Ideally, tiles should be laid to overlap board butt joints by 50 mm. Tiles are installed and grouted in accordance with the tile manufacturer s instructions, BS : 2009, BS : 2007, BS : 2009 and conventional good practice. Vinyl and carpets 14.4 Vinyl finishes can be fixed directly to the boards using the appropriate vinyl adhesive. Carpets are laid and fixed using the appropriate grips, fixings and under layers. 15 Repair Under normal conditions of occupancy, the boards are unlikely to suffer damage. Should damage occur, repairs are carried out by replacing damaged boards. Page 6 of 8

7 Technical Investigations 16 Investigations Test reports were examined in relation to: mechanical resistance freeze thaw dimensional variation warm water testing heat rain testing resistance to concentrated loads reaction to fire release of dangerous substances. Bibliography BS 5250 : 2012 Code of practice for control of condensation in buildings BS : 2009 Wall and floor tiling Code of practice for the design and installation of internal ceramic and natural stone wall tiling and mosaics in normal conditions BS : 2007 Wall and floor tiling Design and installation of internal and external ceramic and mosaic floor tiling in normal conditions Code of practice BS : 2009 Wall and floor tiling Code of practice of tiling and mosaics in specific conditions BS 8103 : 2011 Structural design of low-rise buildings Code of practice for stability, site investigation, foundations and ground floor slabs for housing BS 8203 : 2007 Code of practice for installation of resilient floor coverings BS EN : 2011 Wood-based panels Characteristic values for structural design Plywood BS EN : 2002 Eurocode 1 : Actions on structures General actions Densities, self-weight, imposed loads for buildings BS EN : 2004 Eurocode 5 : Design of timber structures General Common rules and rules for buildings NA to BS EN : 2004 UK National Annex to Eurocode 5 : Design of timber structures General Common rules and rules for buildings BS EN : 2012 Fibre-cement flats sheets Product specifications and test methods BS EN : 2007 Fire classification of construction products and building elements Classification using test data from reaction to fire tests BS EN ISO : 2010 Reaction to fire tests for floorings Determination of the burning behaviour using a radiant heat source EN ISO 1716 : 2002 Determination of the heat of combustion EH 40/2005 Occupational Exposure Limits ISO 8336 : 2009 Fibre-cement flat sheets Page 7 of 8

8 Conditions of Certification 17 Conditions 17.1 This Certificate: relates only to the product/system that is named and described on the front page is issued only to the company, firm, organisation or person named on the front page no other company, firm, organisation or person may hold or claim that this Certificate has been issued to them is valid only within the UK has to be read, considered and used as a whole document it may be misleading and will be incomplete to be selective is copyright of the BBA is subject to English Law Publications, documents, specifications, legislation, regulations, standards and the like referenced in this Certificate are those that were current and/or deemed relevant by the BBA at the date of issue or reissue of this Certificate This Certificate will remain valid for an unlimited period provided that the product/system and its manufacture and/or fabrication, including all related and relevant parts and processes thereof: are maintained at or above the levels which have been assessed and found to be satisfactory by the BBA continue to be checked as and when deemed appropriate by the BBA under arrangements that it will determine are reviewed by the BBA as and when it considers appropriate The BBA has used due skill, care and diligence in preparing this Certificate, but no warranty is provided In issuing this Certificate, the BBA is not responsible and is excluded from any liability to any company, firm, organisation or person, for any matters arising directly or indirectly from: the presence or absence of any patent, intellectual property or similar rights subsisting in the product/system or any other product/system the right of the Certificate holder to manufacture, supply, install, maintain or market the product/system actual installations of the product/system, including their nature, design, methods, performance, workmanship and maintenance any works and constructions in which the product/system is installed, including their nature, design, methods, performance, workmanship and maintenance any loss or damage, including personal injury, howsoever caused by the product/system, including its manufacture, supply, installation, use, maintenance and removal any claims by the manufacturer relating to CE marking Any information relating to the manufacture, supply, installation, use, maintenance and removal of this product/ system which is contained or referred to in this Certificate is the minimum required to be met when the product/system is manufactured, supplied, installed, used, maintained and removed. It does not purport in any way to restate the requirements of the Health and Safety at Work etc. Act 1974, or of any other statutory, common law or other duty which may exist at the date of issue or reissue of this Certificate; nor is conformity with such information to be taken as satisfying the requirements of the 1974 Act or of any statutory, common law or other duty of care. British Board of Agrément tel: Bucknalls Lane fax: Watford mail@bba.star.co.uk Herts WD25 9BA 2013 website: Page 8 of 8