BBA Certificate
Contents
1. APPROVAL Celotex Limited INSPECTION Lady lane Industrial Estate NATION Hadleigh TECHNICAL APPROVALS FOR CONSTRUCTION loswich s dc LIS Fax 01473 820880 Agiman cotidie el ax email technical celotex co uk 95 3 1 97 website www celotex co uk Product Sheet 2 CELOTEX INSULATION CELOTEX RANGE OF PIR INSULATION BOARDS FOR FLOOR INSULATION This Certificate relates to the Celotex Range of PIR Insulation Boards for Floor Insulation comprising rigid polyisocyanurate foam boards with low emissivity aluminium foil facings on both sides for use as floor insulation AGR MENT CERTIFICATION INCLUDES e factors relating to compliance with Building Regulations where applicable e 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 Thermal performance the manufacturer s declared thermal conductivity Ao 99 value of the insulation component of the products as declared by the Certificate holder is 0 022 W m K see section 5 Condensation the foil facings have a water vapour resistance exceeding 70 MN s g and the insulation core has a water vapour resistivity of 300 MN s g m and therefore will provide a significant resistance to water vapour2. Notional non domestic building 0 22 Existing building new or replaced floor 0 22 Dwelling new build limit 0 25 Notional dwelling 0 25 Non domestic new build limit 0 25 Existing building renovated or retained floor 0 25 1 Flexible approaches on existing buildings are given in the Approved Documents Table 4 Mean design floor U values Scotland Construction U value W m K Notional dwelling 0 15 New dwelling simplified method 5 Conversion unheated building into dwellings 0 15 Extension to dwelling 0 15 Alterations and reconstructions to a dwelling 0 18 Stand alone building 50 m to a dwelling 0 18 ew dwelling limit 0 20 ew non dwellings limit for shell and fit out 0 20 Conversion of unheated building 0 20 on domestic extension alterations and reconstructions 0 20 ew non domestic limit 0 22 otional non dwelling 0 25 Conversion of heated building 0 25 1 Flexible approaches on existing buildings are given in the Technical Handbooks Page 4 of 12 Table 5 Mean design floor U values Northern Ireland Construction U value W m K Existing building new floors 0 22 olional dwelling 75 Building new build limit 0 25 otional non domestic building 0 25 Existing building replaced renovated or retained floor 0 25 1 Flexible approaches on existing buildings are given in the Technical Booklets New buildings 5 4 Floors with U values lower than or the same as for dw
3. Certificate is the minimum required to be met when the product system is manufactured supplied installed used and maintained It does not purport in any way to restate the requirements of the Health amp Safety at Work etc Act 1974 or of any other statutory common law or other duty which may exist at the date 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 In granting this Certificate the BBA does not accept responsibility to any person or body for any loss or damage including personal injury arising as a direct or indirect result of the manufacture supply installation use and maintenance of this product system Page 11 of 12 British Board of Agr ment tel 01923 665300 Bucknalls Lane fax 01923 665301 Garston Watford email mail amp bba star co uk Herts WD25 9BA website www bbacerts co uk Page 12 of 12
4. insulation will be relatively thin so it would not be possible to install pipes within the insulation Pipes installed above the insulation will not require lagging although some provision needs to be made for expansion and contraction 14 5 For floors incorporating particle board overlays where access to the services is desirable a duct may be formed by mechanically fixing to the floor timber bearers of the same thickness as the insulation to provide support for a particle board cover The duct should be as narrow as possible and not exceed 400 mm in width without intermediate support 14 6 On intermediate exposed floors all the services should be incorporated beneath the existing floor above the insulation if possible 15 Tests Tests were carried out on the Celotex Range of PIR Insulation Boards for Floor Insulation to determine load compression characteristics effect of cyclic loading thermal conductivity compressive strength 16 Investigations 16 1 The manufacturing process was examined including the methods adopted for quality control and details were obtained of the quality and composition of the materials used 16 2 An examination was made of data relating to e thermal conductivity fresh and aged dimensional accuracy dimensional stability water vapour resistance compressive strength at 10 compression densily e fire risk 16 3 An assessment of the risk of interstitial condensation in t
5. and 3 4 6012 1 Technical Handbook Domestic 2 Technical Handbook Non Domestic Northern Ireland Technical Booklet C Section 1 10 Maintenance As the products are confined within the floor by the overlay and have suitable durability see section 11 maintenance is not required Page 6 of 12 11 Durability The products are rotproof dimensionally stable and when installed with the overlays specified in this Certificate ZT 3b vill remain effective as an insulating material for the life of the building in which they are incorporated Installation 12 General 12 1 Typical methods of installing the Celotex Range of PIR Insulation Boards for Floor Insulation are shown in Figures 2 and 3 Reference should also be made to BRE Report BR 262 2002 Figure 2 Ground supported concrete floor Figure 3 Suspended timber floor 12 2 The concrete floor over which the boards are to be laid should be left for as long as possible to maximise drying out and dissipation of constructional moisture 12 3 The floor surface should be smooth and flat to within 5 mm when measured with a two metre straightedge Irregularities greater than this must be removed Minor irregularities up to 1O mm deep may be levelled with mortar Page 7 of 12 2 4 Where the boards are used over ground supported concrete floor slabs a suitable dpm for example in accordance with CP 102 1973 should be incorpor
6. ated timber beads may be used to retain the boards Beads should be wide enough to retain the boards in place and secured with corrosion protected nails at a depth that will accommodate the thickness of the insulation board and leave a suitable depth void minimum 25 mm between the top of the insulation and the underside of the flooring deck Boards are cut to fit between the joists and pushed down onto the beads Page 8 of 12 14 Incorporation of services 4 1 The maximum continuous working temperature of the boards is 100 C De rating of electrical cables should be considered where installation restricts air cooling of cables Where underfloor heating systems are to be used the advice of the Certificate holder should be sought 4 2 Where the boards are installed on a floor of a suspended beam and block design all services must be installed in accordance with the Agr ment Certificate for that floor 4 3 Where possible electrical conduits gas and water pipes or other services should be contained within ducts or channels within the concrete slab Where this is not possible the services may be accommodated within the insulation provided they are securely fixed to the concrete slab see section 7 2 Electric cables should be enclosed in a suitable conduit With hot pipes the insulation must be cut back to maintain an air space 14 4 Where water pipes are installed below the insulation they should be prelagged Generally
7. ated to resist moisture from the ground If a liquid type damp proof membrane is applied to the slabs it should be of a type compatible with the boards and be allowed to dry out fully before laying the boards 2 5 Where the boards are used on hard core bases under ground supported concrete slabs the hardcore must be blinded and a dpm laid over before the boards are laid 2 6 Where a screed or concrete slab is laid over the product vertical upstands of insulation should be provided and be of sufficient depth to fully separate the screed or slab from the wall In addition a polyethylene vapour check minimum 0 125 mm thick should be laid over the boards with 150 mm laps and turned up at abutments before laying the screed or slab 12 7 To limit the risk of damage from condensation and other sources of dampness the boards and the overlay should only be laid after the construction is made substantially weathertight eg after glazing The boards must also be protected from water spillage plaster droppings traffic during construction 12 8 Boards are installed between floor joists using Celotex insulation clips or timber stop beads Tongue and groove particle board flooring or softwood floor boarding is then installed in the conventional manner 13 Procedure 13 1 The boards are cut to size as necessary and laid with tightly butted joints Screed overlay 13 2 A polyethylene vapour control layer minimum O 125 mm thick is la
8. ellings in Scotland the relevant notional value specified in Table 4 or 5 will contribute to a building meeting its Target Emission Rate Floors with higher U values will require additional energy saving measures in the building envelope and or services n 5 5 The products can contribute to maintaining continuity of thermal insulation at junctions between elements Example junction details shown in Figure 1 are acceptable and the corresponding psi values in BRE Information Paper IP 1 06 Assessing the effects of thermal bridging at junctions and around openings Table 3 may be used in carbon emission calculations in Scotland and Northern Ireland Detailed guidance for other junctions and on limiting heat loss and air infiltration can be found in England and Wales Approved Documents to Part L and for new thermal elements to existing buildings Accredited Construction Details version 1 0 See also SAP 2009 Appendix K and the iSBEM User Manual for new build Scotland Accredited Construction Details Scotland Northern Ireland Accredited Construction Details version 1 0 Figure 1 Junctions Celotex PIR perimeter upstand insulation screed polythene 2 e 5 E separating layer P DNE on Existing buildings 5 6 For existing buildings in work such as extensions and conversions floors wil
9. he thermal transmittance U value of specific floor constructions should be carried out in accordance with BS EN ISO 6946 2007 and BRE Report BR 443 2006 Conventions for U value calculations using the declared thermal conductivity Ngp 99 value of 0 022 W mr K and an emissivity of the outer layer of 0 05 5 2 The U value of a completed floor will depend on the selected insulation thickness the perimeter area ratio and the floor type Calculated U values for example constructions are given in Table 2 Table 2 Example floor U values nsulation thickness Floor type Perimeter 75 mm 100 mm 150 mm 200 mm area ratio W m K W m K W m K W m K 0 2 0 15 Oils 0 10 0 08 0 4 0 19 0 15 0 11 0 09 Slab on ground support 0 6 0 21 0 17 0 12 0 10 0 8 0 22 0 17 0 13 0 10 1 0 0 23 0 18 0 13 0 10 0 2 0 20 0 18 0 14 0 12 0 4 0 25 0 21 0 16 0 13 Suspended timber floor 0 6 0 27 0 22 0 17 0 13 0 8 0 28 0 23 0 17 0 14 1 0 0 29 0 24 0 18 0 14 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 enable or contribute to enable a floor to achieve typical design U values referred to in those supporting documents see Tables 3 4 and 5 Table 3 Mean design floor U values England and Wales Construction U value W mr 2 K
10. id over the boards with 150 mm laps A properly compacted screed of mean thickness 65 mm is then laid over The relevant clauses of BS 8204 1 2003 or BS 8204 2 2003 should be followed and BRE Building Elements Series BR 450 Floors and flooring chapter 4 2 consulted Particle board or oriented strand board OSB overlay 3 3 Before laying the boards preservative treated battens in accordance with BS 1282 1999 are positioned at doorways and to support partitions Adequate time should be allowed for preservatives to be fixed and the solvents from solventbased preservatives to evaporate 3 4 Tongue and groove particle board Grade P4 to P7 or OSB 3 or OSB 4 18 mm thick to the relevant clauses in DD ENV 12872 2000 is laid with staggered cross oints 3 5 An expansion gap between the particle board and the perimeter walls should be provided at the rate of 2 mm per metre run or a minimum of 10 mm whichever is the greater 3 6 Where there are long uninterrupted lengths of floor eg corridors proprietary expansion joints should be installed at intervals on the basis of a 2 mm gap per metre run of particle board 3 7 Before the boards are interlocked either a PVA or panel adhesive is applied to the joints 3 8 Once the particle board is laid temporary wedges are inserted between the walls and the floor to maintain tight joints until the adhesive has set 3 9 To prevent cold bridging a suitable compressible filler eg pieces of in
11. iour in relation to fire 7 1 The products do not prejudice the fire resistance properties of the floor provided they are used in accordance with BS 6203 2003 The boards may be classified as shown in Table 6 Table 6 Fire classification TBAOOO GA4000 XR4000 FF4000 GX4000 FRAOOCO Class 1 to BS 476 7 20 90mm Class 1 to Class 1 to Euroclass D to Class 1 to BS 476 7 Euroclass F to Euroclass F to BS 4767 50 90 mm only BS EN 13501 1 BS EN 13501 1 BS EN 13501 1 BS 4767 55 90 mm Euroclass F to BS EN 13501 1 20 50 mm and 95 200 mm Euroclass F to Euroclass D to Pass to A BS EN 13501 1 BS 476 6 BS EN 13501 1 55 90 mm Euroclass F to Class O as described BS EN 13501 1 in the national Building 50 mm 95 mm and Regulations 100 mm 7 2 When properly installed the product will not add significantly to any existing fire hazard The boards will be contained within the floor by the overlay until the overlay itself is destroyed Therefore the products will not contribute to the development stages of a fire or present a smoke or toxic hazard 8 Floor loading 8 1 The compressive strength of Celotex TB4000 GA4000 XR4000 GX4000 and FRAOOO is equal to or 133 exceeds 120 kN m The compressive strength of Celotex FF4000 is equal to or exceeds 140 kN m 8 2 The products are suitable for occupancies defined in this Certificate see section 3 4 when covered with a suitable floor covering and are capable of resisting a uniforml
12. l be acceptable where they do not exceed the relevant U value given in Tables 3 4 or 5 and junctions comply with the details given in section 5 5 6 Condensation Interstitial condensation 333 accordance with BS 5250 2002 Section 8 5 and Appendix D The foil facings have a water vapour resistance exceeding 70 MN s g7 and the insulation core has a water vapour resistivity of 300 MIN s g m 6 2 A vapour control layer in the warm side of the insulation or the damp proof membrane acting as a vapour control layer VCl situated as appropriate in the warm side might be required to limit the risk of interstitial condensation Ae Floors will adequately limit the risk of interstitial condensation when they are designed and constructed in Surface condensation 333 no exceed 0 7 W m K at any point and the junctions with walls are designed in accordance with the relevant requirements of Limiting thermal bridging and air leakage Robust construction details for dwellings and similar buildings TSO 2002 or BRE Information Paper IP 01 06 v Floors will adequately limit the risk of surface condensation when the thermal transmittance U value does Page 5 of 12 not exceed 1 2 W m K at any point Guidance may be obtained from BS 5250 2002 Section 8 and Bs Floors will adequately limit the risk of surface condensation when the thermal transmittance U value does BRE Report BR 262 2002 Thermal insulation avoiding risks 7 Behav
13. nd latest issue number of this Agr ment Certificate by either referring to the BBA website or contacting the BBA direct British Board of Agr ment tel 01923 665300 Bucknalls Lane fax 01923 665301 Garston Watford e mail mail amp bba star co uk Herts WD25 9BA website www bbacerts co uk Page of 12 Regulations In the opinion of the BBA the Celotex Range of PIR Insulation Boards for Floor Insulation if used in accordance with the provisions of this Certificate will meet or contribute to meeting the relevant requirements of the following Building Regulations 3 The Building Regulations 2010 England and Wales 5 Requirement Al Loading Comment Floors incorporating the products can meet this Requirement See section 8 1 of this Certificate Requirement C2 a c Resistance to moisture Comment Floors incorporating the products can meet this Requirement See sections 6 1 and 6 3 of this Certificate Requirement L1 a i Conservation of fuel and power Comment The products can contribute to a building to meet its Target Emission Rate See sections 5 3 to 5 6 of this Certificate Requirement Regulation 7 Materials and workmanship Comment The products are acceptable See section 11 and the Installation part of this Certificate r The Building Scotland Regulations 2004 as amended 5 Regulation 8 1 Fitness and durability of materials and workmanship Comment The products can contribute to a co
14. nstruction satistying this Regulation See section 11 and the Installation part of this Certificate Regulation 9 Building standards construction Standard 1 1 a b Structure Comment Floors incorporating the products can satisfy this Standard with reference to clause 1 1 1 See section 8 1 of this Certificate Standard 2315 Condensation Comment Floors incorporating the products can satisfy this Standard with reference to clauses 3 15 1 3 15 40 See sections 6 1 and 6 4 of this Certificate Standard 6 1 b Carbon dioxide emissions Standard 6 2 Building insulation envelope Comment The products can contribute to satisfying these Standards with reference to clauses or parts of 6 1 20 6 1 38 6 1 6 6 2 1 6 2 31 6 2 69 and 6 2 9012 fo 6 2 1 20121 See sections 5 3 to 5 6 of this Certificate Regulation 12 Building standards conversions Comment All comments given for the products under Regulation 9 also apply to this Regulation with reference to clause O 12 1 and Schedule 6 1 Technical Handbook Domestic 2 Technical Handbook Non Domestic The Building Regulations Northern Ireland 2000 as amended 5 Regulation B2 Fitness of materials and workmanship Comment The products are acceptable See section 11 and the Installation of this Certificate Regulation C5 Condensation Comment Floors incorporating the products can meet this Regulation See section 6 1 of this Certificate Reg
15. nvestigations carried out on the Celotex Range of PIR Insulation Boards for Floor Insulation 3 General 3 1 The Celotex Range of PIR Insulation Boards for Floor Insulation is effective in reducing the thermal transmittance U value of new or existing concrete or timber floors 3 2 Groundssupported floors incorporating the boards must include a suitable damp proof membrane laid in accordance with the relevant sections of CP 102 1973 BS 8102 1990 and or BS 8215 1991 see section 9 3 3 Suspended concrete or timber ground floors incorporating the boards must include suitable ventilation of the sub floor void or a damp proof membrane see section 9 3 4 The overlay to the boards should be one of a floor screed laid in accordance with the relevant clauses of BS 8204 1 2003 and BS 8204 2 2003 e a wood based floor eg tongue and groove plywood 16 mm thick minimum to BS EN 636 2003 flooring grade particle board Types P4 to P7 to BS EN 312 2003 or oriented strand board of types OSB 2 to OSB A to BS EN 300 1997 18 mm thick minimum installed in accordance with DD ENV 12872 2000 a concrete slab Page 3 of 12 3 5 If present mould or fungal growth should be treated prior to the application of the products 4 Practicability of installation The products are 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 t
16. sities sellweight imposed loads for buildings BS EN 13501 1 2002 Fire classification of construction products and building elements Classification using test data from reaction to fire tests BS EN 13810 1 2002 Wood based panels Floating floors Performance specifications and requirements BS EN ISO 6946 2007 Building components and building elements Thermal resistance and thermal transmittance Calculation method CP 102 1973 Code of practice for protection of buildings against water from the ground DD CEN TS 13810 2 2003 Wood based panels Floating floors Test methods DD ENV 12872 2000 Wood based panels Guidance on the use of load bearing boards in floors walls and roofs Page 10 of 12 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 granted only to the company firm or person named on the front page no other company firm or person may hold or claim any entitlement to this Certificate is valid only within the UK li 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 17 2 Publications and documents referred to in this Certificate are those that the BBA deems to be relevant at the date of issue or re issue of this Certificate and include any Act of Parliamen
17. sulation should be fitted around the perimeter of the floor between the particle board and the walls when the wedges are removed and before the skirting boards are affixed 3 10 Where there is a likelihood of regular water spillage such as kitchens bathrooms shower and utility rooms additional particle board protection may be considered eg by the use of flexible vinyl sheet flooring with welded joints and cove skirtings Concrete slab overlay ground bearing only 13 11 Perimeter edge pieces are cut and placed around the edges and taped at joints A vapour control layer minimum O 125 mm thick is laid over the boards with 150 mm laps The concrete slab is laid to the required thickness Timber floors 3 12 Boards can be supported between timber joists using either Celotex insulation clips or timber beads Where timber beads are used a void may be incorporated above the insulation to accommodate services if required 3 13 Boards are cut to size to fit tightly between the joists The clip spikes are pressed into the long edges of the board ensuring the flange sits flat on the face of the board Clips should be fitted at one metre intervals The board is then pushed into place until the clip is level with the surface of the joist For additional security the clip can be fixed to the joist with a small flathead nail driven through the flange of the clip 3 14 Where a service void is required above the insulation preservativetre
18. t Statutory Instrument Directive Regulation British European or International Standard Code of Practice manufacturers instructions or any other publication or document similar or related to the aforementioned 17 3 This Certificate will remain valid for an unlimited period provided that the product system and the manvfacture and or fabrication including all related and relevant 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 17 4 In granting this Certificate the BBA is not responsible for ihe 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 individual installations of the product system including the nature design methods and workmanship of or related to the installation e he actual works in which the product system is installed used and maintained including the nature design methods and workmanship of such works 17 5 Any information relating to the manufacture supply installation use and maintenance of this product system which is contained or referred to in this
19. transmission see section 6 Behaviour in relation to fire the products will be contained within the floor by the overlay until the overlay itself is destroyed see section 7 Floor loading the products covered with a screed overlay or concrete slab can support design loadings for self contained dwelling units as defined in BS 6399 1 1996 without undue compression deflection see section 8 Durability the products when installed with the overlays specified will remain effective as an insulating material for the life of the building in which it is incorporated see section 11 The BBA has awarded this Agr ment Certificate to the company named above for the products described herein These products have been assessed by the BBA as being fit for their intended use provided they are installed used and maintained as set out in this Certificate On behalf of the British Board of Agr ment 77 g ae 4 LL Date of Second issue 12 October 2010 Chris Hunt Greg Cooper Originally certificated on 31 March 1996 Head of Approvals Ex Physics Chief Executive Certificate amended on 3 November 2010 with updated information in the Thermal performance section 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 a
20. ulation D1 Stability Comment Floors incorporating the products can meet this Regulation See section 8 1 of this Certificate Regulation F2 a i Conservation measures Comment See sections 5 3 to 5 6 of this Certificate Regulation F3 2 Target carbon dioxide Emissions Rate Comment The products can contribute to a building satisfying its Target Emission Rate See sections 5 3 to 5 6 of this Certificate Construction Design and Management Regulations 2007 Construction Design and Management Regulations Northern Ireland 2007 In the opinion of the BBA there is no information in this Certificate which relates to the obligations of the client CDM co ordinator designer and contractors under these Regulations Page 2 of 12 Non regulatory Information NHBC Standards 2010 NHBC accepts the use of the Celotex Range of PIR Insulation Boards for Floor Insulation when installed and used in accordance with this Certificate in relation to NHBC Standards Chapter 5 1 Substructure and ground bearing floors General This Certificate relates to the Celotex Range of PIR Insulation Boards for Floor Insulation for use on ground supported or suspended concrete or timber floors and also for use with exposed or semi exposed intermediate concrete or timber floors of new or existing floors of dwellings or buildings of similar occupancy type and condition Technical Specification 1 Description The Celotex Range of PIR Ins
21. ulation Boards for Floor Insulation comprises Celotex TB4000 GA4000 XR4000 FF4000 GX4000 and FRAOOO rigid polyisocyanurate foam board with low emissivity aluminium foil facings on both sides These products are available in the dimensions given in Table 1 Table 1 Nominal dimensions Product e n TB4000 200 x 2400 12 20 25 30 35 40 and 45 GA4000 200 x 2400 50 55 60 65 70 75 80 85 90 95 and 100 XR4000 200 x 2400 110 120 130 140 150 165 and 200 FF4000 200 x 2400 50 70 75 85 90 100 and 125 GX4000 200 x 600 20 200 FRAOO0 200 x 2400 25 50 60 70 75 80 90 100 110 120 130 140 and 150 2 Delivery and site handling 2 1 The boards are delivered to site in packs Each pack contains a label bearing the manufacturer s name board dimensions and the BBA identification mark incorporating the number of this Certificate 2 2 The boards must be protected from prolonged exposure to sunlight and should be stored either under cover or p with opaque polythene sheeting Where possible packs should be stored inside If stored outside the oards should be stacked flat and raised above ground level and not in contact with ground moisture 2 3 Care must be exercised in handling individual boards to avoid crushing the edges or corners 2 4 The boards must not be exposed to open flame or other ignition sources Assessment and Technical Investigations The following is a summary of the assessment and technical i
22. y distributed load of lt 4 kN m and a concentrated load of lt 1 5 kN for category A and B and type A and B situations for domestic and residential activities as defined in NA to BS EN 1991 1 1 2002 Table NA 2 and BS 6399 1 1996 Table 1 respectively Further assessment is necessary for duty walkways and floors subject to physical activities 8 3 Where the products are used in non domestic situations or where the floor is subject to the following loads the ability of the tloor constructions to resist the loads in service should be confirmed by the flooring overlay specification The performance of the floor construction will depend on the insulation properties and type of floor covering used including thickness and strength Further guidance on the suitability of floor covering can be found in BS EN 13810 1 2002 DD CEN TS 138102 2003 and BS 8204 1 2003 and from the flooring manufacturer loads greater than those defined in section 8 2 point loads particularly at edges and corners impact loads 9 Moisture penetration 9 The products can be used above the damp proof membrane dpm and must not be used where they may come into contact with moisture from the ground 9 2 For floors subject to national Building Regulations construction should be as detailed or designed in accordance with England and Wales Approved Document C Section 4 Scotland Mandatory Standard 3 4 clauses 3 4 2012 to 3 4 42
23. ypical constructions was made Page 9 of 12 Bibliography BS 476 6 1989 Fire tests on building materials and structures Method of test for fire propagation for products BS 476 7 1997 Fire tests on building materials and structures Method of test to determine the classification of the surface spread of flame of products BS 1282 1999 Wood preservatives Guidance on choice use and application BS 5250 2002 Code of practice for control of condensation in buildings BS 6203 2003 Guide to fire characteristics and fire performance of expanded polystyrene materials EPS and XPS used in building applications BS 6399 1 1996 loading for buildings Code of practice for dead and imposed loads BS 8102 1990 Code of practice for protection of structures against water from the ground BS 8204 1 2003 Screeds bases and in situ floorings Concrete bases and cement sand levelling screeds to receive floorings Code of practice BS 8204 2 2003 Screeds bases and in situ floorings Concrete wearing surfaces Code of practice BS 8215 1991 Code of practice for design and installation of damp proof courses in masonry construction BS EN 300 1997 Oriented Strand Boards OSB Definitions classification and specifications BS EN 312 2003 Particleboards Specifications BS EN 636 2003 Plywood Specifications BS EN 1991 1 1 2002 UK National Annex to Eurocode 1 Actions on structures General actions Den
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