BASF BBA Cert
Contents
1. 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 Certiticate nor is conformity with such information to be taken as satistying 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 15 of 16 British Board of Agr ment tel 01923 665300 Bucknalls Lane ene OO ZS COSCO Garston Watford email mail bba star co uk Herts VVD25 9BA website www bbacerts co uk Page 16 of 162. root tile underlay Walltite plasterboard VCL 15 5 Where additional insulation to that provided in sections 15 4 15 6 and 15 7 is required insulation can be placed between the horizontal ceiling joists in the form of mineral wool or WALLTITE after conducting a condensation risk analysis in accordance with section 6 Page 9 of 16 Between rafters application bitumen felt sarking board 15 6 BASF ventilator spacers are tightly fitted at the eaves to fully fill the space between the ratters see Figure 2 BASF rafter slides are then stapled to the internal face of the rafters leaving a minimum 25 mm of ratter exposed below the edges of the BASF rater slides for the foam to adhere to see Figure 3 A 50 mm deep ventilated void minimum of 25 mm at the centre of the underlay drape and the BASF ventilator spacers BASF ratter slides must be maintained The foam is spray applied to the depth of the ratters as in section 15 4 Figure 2 BASF ventilator spacer detailing BASF rafter slide Walltite BASF ventilator spacer Figure 3 BASF rafter slide detailing BASF rafter slide A wees NS S5 A N ol T oe Walltite roof tile underlay Between and below rafters 15 7 The foam is applied by spray to the depth of the rafters as shown in section 15 4 Cross battens are then mechanically fixed to the rafters The battens must be of sufficient width and spacing up to 600 mm
3. ground floor constructions timbertrame stud walling and the internal surfaces of external masonry walls 1 Hybrid roofs contain both sloping and horizontal insulation 1 2 The foam is prepared by mixing two liquid components one part by volume of isocyanate to one part by volume of resin within the nozzle of the spray gun during the spraying process The thermal insulation system is built up in layers not exceeding 20 mm in thickness until the required thickness is achieved It is fully cured within two hours 1 3 Quality control arrangements on site include checks on density and appearance 1 4 Ancillary items used with the product but outside the scope of this Certiticate include e BASF rafter slides corrugated cardboard used to create a 50 mm ventilation gap between the bitumen felt sarking board and WALLTITE e BASF ventilator a polyvinyl chloride ventilator used at the eaves and or ridge to create a 50 mm ventilation gap between the bitumen felt sarking board and WALLTITE It also keeps the eaves clear of WALLTITE 2 Delivery and site handling 2 1 The two components are delivered to site in drums up to 250 kg capacity bearing the product name batch number and the BBA identitication mark incorporating the number of this Certificate 2 2 Drums should be stored in a well ventilated area ideally above 10 C and away trom possible ignition sources The drums must be protected trom frost 2 3 The isocyanate componen
4. should be taken to avoid ignition at all times 14 6 To prevent the product trom entering the occupied space the lott hatch cover must be kept closed during the spraying process Protective covers must be placed over water tanks fo prevent contamination and blockage during application and should not be removed until sufficient time has elapsed for potentially harmful vapours to be ventilated trom the roof space 15 Procedure General 15 1 Building elements to be insulated must be assessed for suitability and any necessary repairs carried out Elements must be weather tight betore the application of the product The positioning and access fo services should also be considered 15 2 Access boards and lighting should be positioned in the roof void 15 3 Where there is no provision made for ventilation of the space care should be taken to ensure that ingress of moisture vapour trom the dwelling space below is restricted see also sections 6 1 and 6 2 Between rafters application breathable roof tile underlay see Figure 1 15 4 The product should be spray applied to clean and dry substrates in a flash coat lt 10 mm thick Care must be taken to ensure the integrity of the roof tile underlay drape Subsequent coats not exceeding 20 mm thick are applied once the foam reaction has occurred and within 10 minutes of the previous coat being applied until the required total thickness is achieved Figure 1 Typical pitched root application
5. to provide adequate support to which the plasterboard can be mechanically tixed Filling then resumes in 20 mm thick layers Page 10 of 16 Flat roofs 15 8 The product is sprayed directly to the underside of the root deck as described in section 15 4 Ground Floors 15 9 All concrete floor surfaces should be smooth level and flat to within 5 mm when measured with a 2 m straight edge Irregularities greater than this must be removed whilst minor irregularities up to 10 mm deep may be levelled with mortar or thin screed 15 10 In ground supported concrete floors the concrete floor slab over which the product is spray applied should be lett for as long as possible to maximise drying out and dissipation of construction moisture in accordance with Bs 8203 2001 Section 3 1 2 15 11 Where the product is used over ground supported concrete floor slabs a suitable dpm in accordance with CP 102 1973 Section 11 and BS 8204 1 2003 or BS 8204 2 2003 should be laid to resist moisture from the ground It a liquidtype dom is applied to the slabs it should be of a type compatible with the product and be allowed to dry out tully prior to installation of the product 15 12 Ground floors with a hardcore base must be compacted and blinded with a thin layer of sand before laying the dpm product and concrete slab 15 13 The product can be used on beam and block suspended concrete floors that are the subject of a current Agr ment Certificate
6. 2 e Bo 5534 2003 e BS 5628 3 2005 Bo 0227220903 e BS 8102 2009 B53581033 1996 e BS 8204 1 2003 e BS 8204 2 2003 e BS 8215 1991 e BS 8000 3 2001 e BS 80009 2003 e BSEN 1995 1 1 2004 e BS EN 1996 1 1 2005 e BSEN 1996 1 2 2005 BSEN 1996 2 2006 BSEN 1996 3 2006 1 Further information is given in BRE Report BR 262 2002 Thermal insulation avoiding risks Page 3 of 16 3 4 Existing constructions must be in a good state of repair with no evidence of rain penetration or damp Defects must be made good prior to installation 3 5 If present mould or fungal growth must be treated prior to the application of the product 3 6 The product must not come into direct contact with flue pipes chimneys or other heat producing appliances see section 8 3 7 It is essential that construction elements are designed and constructed to incorporate normal precautions against moisture ingress before the application of the product 3 8 The product forms a strong bond with clean and dry substrates This should be taken into account when specifying the product or anticipating future alterations 3 9 The product can contribute to the airtightness of the building envelope 3 10 To satisfy the requirements of NHBC a vapour control layer VCL of a type specified in their Standards must be applied behind the plasterboard lining in root and wall applications and the product must only be applied to a roof construction incorporatin
7. 5 The product can be added to the void between studwork or used as a substitute tor glass mineral wool in any loadbearing timberftramed inner leaf to a double leat wall system providing that e the outer leaf is masonry and e the existing inner leat system has been shown to satisfy the loadbearing capacity performance criterion of BS 476 21 1987 or BS EN 1365 1 1999 for the required fire resistance period 7 6 The suitability of constructions other than those described in section 7 5 should be demonstrated by an appropriate test or assessment Roofs 7 7 The use of the product in a tiled pitched roof does not affect it s external rating when evaluated by assessment or test to BS 476 3 2004 8 Proximity of flues and appliances When installing the product in close proximity to certain flue pipes and or heat producing appliances the relevant provisions of the national Building Regulations are applicable England and Wales Approved Document J sections 1 to 4 Scotland Mandatory Standard 3 19 clauses 3 19 1012 to 3 19 91 1 Technical Handbook Domestic 2 Technical Handbook Non Domestic Northern Ireland Technical Booklet L sections 1 to 4 9 Materials in contact Wiring installations 9 1 De rating of electric cables should be considered in areas where the product restricts the flow of air Where the foam is likely to bond to electric cables suitable conduit or trunking must be used 9 2 Recessed light
8. 8 with LR underlay at O00 centres 2612 135 O 16 200 0 13 713 150 0 20 Flat timber roof mer 50 r 130 2012 150 0 18 a centres 5014 150 0 15 92 0 30 102 0 28 Timber frame wall Studs 38 x 140 3215 121 0 25 at 600 centres 14083 0 29 140 0 19 1 Plasterboard taken as 12 5 mm at 0 25 W m7 K and all timber taken from BR 443 2 Timber batten 47 mm x 30 mm at 600 mm centres 3 Timber batten 47 mm x 22 mm at 600 mm centres 4 Timber batten 47 mm x 60 mm at 600 mm centres 5 Timber batten 47 mm x 32 mm at 600 mm centres Table 3 Hybrid pitched roof U values including a 10 correction factor calculated to section 8 of BR 443 2006 Insulation at rafter level flat ceiling Root pitch 6 20 30 AO 50 60 U value VWV mr2 K 0 18 0 18 0 19 0 20 0 22 Note Assuming construction of roof external to internal e 100 mm WALLTITE 91 6 100 mm deep timber rafters e loft void air cavity resistance 0 16 m K W e 100 mm WALLTITE 91 6 timber ceiling joists e plasterboard 12 5 mm Table 4 Slab on ground support U values 2I P A perimeter area Insulation thickness Construction U value mm VV m2 K 0 20 50 0 20 0 25 50 0 22 0 30 50 0 24 0 25 75 0 18 0 30 PAS 0 20 OAS 75 0 22 0 70 Fo 0 25 0 35 120 Oo 0 90 120 ORs 1 Edge insulation not included 2 Wall thickness w 0 3 m Page 5 of 16 Table 5 Mean design roof floor and wall U values England and Wales Construction
9. BASF Polyurethanes UK Ltd APPROVAL Alfreton Trading Estate BR INSPECTION Wimsey Way CERTIFICATION Somercotes TECHNICAL APPROVALS FOR CONSTRUCTION Alfreton Derbyshire DESS 4NL Agr ment Certificate Tel 01773 601166 Fax 01773 602089 11 4816 email walltiteuk basf com website www walltite basf co uk Product Sheet 1 BASF POLYURETHANES WALLTITE This Certificate relates to VWWALLTITE a spray applied expanding polyurethane foam for use as an in situ thermal insulation system for roots ground floors and external walls of new and existing domestic or similar buildings It is for use in timber trame cavities between and under timber rafters and to the internal surface of masonry walls and concrete ground floors AGREMENT CERTIFICATION INCLUDES e factors relating to compliance with Building Regulations where applicable e factors relating to additional non regulatory information where applicable independently veritied technical specification assessment criteria and technical investigations design considerations installation guidance regular surveillance of production formal three yearly review KEY FACTORS ASSESSED Practicability of installation the product must only be installed by contractors trained and approved by the Certiticate holder see section 4 Thermal performance when installed at an appropriate thickness the product can enable elements to meet or improve on U values specified for notion
10. COS 0 Garston Watford email mail bba star co uk Hem ADS OBRA website www bbacerts co uk Page of 16 Regulations In the opinion of the BBA WALLTITE if used in accordance with the provisions of this Certificate will meet or contribute to meeting the relevant requirements of the following Building Regulations gt The Building Regulations 2010 England and Wales 5 Requirement Al Loading Comment Masonry floors incorporating the product can meet this Requirement See section 10 of this Certificate Requirement C2 c Resistance to moisture Comment The risk of interstitial condensation must be assessed for each construction The product can adequately limit the risk of surface condensation See sections 6 1 and 6 7 of this Certificate Requirement L1 a i Conservation of fuel and power Comment The product can contribute to meeting this Requirement See sections 5 1 and 5 2 of this Certiticate Requirement Regulation 7 Materials and workmanship Comment The product is an acceptable material See section 13 and the Installation part of this Certificate k The Building Scotland Regulations 2004 as amended 5 Regulation 8 1 Fitness and durability of materials and workmanship Comment The product can contribute to a construction satistying this Regulation See section 13 and the Installation part of this Certiticate Regulation 9 Building Standards construction Standard 1 1 a b Structure Commen
11. U value VV m 2 K 1 Root Floor Wall Existing building new or replaced floor or wall 0 22 0 28 Existing building renovated or retained floor or wall 0 25 0 30 Existing building new replaced renovated or retained roof 0 16 Notional dwelling 0 16 O25 0 35 Existing building new replaced renovated or retained roof 0 18 Notional non domestic building 0 18 0 22 0 26 Dwelling new build limit 0 20 Q23 0 30 Non domestic new build limit 0 25 0 25 O35 1 Flexible approaches on existing buildings are given in the Approved Documents 2 Hybrid pitched roof 3 Pitched roof insulation at rafter level Table 6 Mean design roof floor and wall U values Scotland Construction U value VV mr 2 Ko1 Roof Floor Wall Notional dwelling 0 13 0 15 0 19 New dwelling simplified method 0 13 Cae 0 19 Conversion unheated building into dwellings 0 13 0 15 0 19 Extension to dwelling 0 13 0 15 0 19 Conversion of unheated building into dwellings 0 15 0 15 0 19 Extension to dwelling 0 15 tA 0 19 Alterations and reconstructions to a dwelling 0 15 0 18 O22 Stand alone building lt 50 m to a dwelling 0 15 0 18 0 22 New non dwellings limit for shell and fit out Olo 0 20 0 23 Conversion of unheated building 0 15 0 20 0 25 Non domestic extension alterations and reconstructions 0 15 0 20 D29 Notional non dwelling 0 16 0 25 0 30 Alterations and reconstructions to a dwelling 0 18 0 18 O22 Stand alon
12. al and existing buildings see section 5 Condensation risk the product has a water vapour resistivity of approximately 306 MN s g7 m but the risk of interstitial condensation will depend on the construction and should be assessed for each project see section 6 Behaviour in relation to fire root floor and wall systems using this product can be designed to meet UK requirements see section 7 Durability the durability of the product is satistactory and will have a lite equivalent to that of the structure in which it is incorporated see section 1 3 The BBA has awarded this Agr ment Certificate to the company named above for the product described herein The 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 Agr ment ae EtG Date of First issue 21 February 2011 Simon Wroe 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 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 w OW OZE
13. and installed in accordance with and within the limitations imposed by that Certificate It may also be used on designed and installed precast concrete floors with general loading codes which have been assessed as suitable 15 14 When a screed or concrete slab is to be laid over the product vertical spray applied insulation should be provided and be of sufficient depth to fully separate the screed or slab from the wall and provide a minimum thermal resistance of 0 75 m2 K W 15 15 To limit the risk of damage trom condensation and other sources of dampness the product should only be spray applied atter the construction is made substantially weathertight eg after glazing During construction the product must also be protected trom water spillage plaster droppings and trattic 15 16 The foam is spray applied to the required depth as in section 15 4 Cement based screed overlay see Figure 4 15 17 The foam is spray applied to the wall around the floor perimeter edges to provide edge insulation If required a polythene VCL minimum 0 125 mm thick is laid over the product with 150 mm laps A compacted screed is then poured over to a depth of 65 mm for a domestic dwelling and 75 mm for others The relevant clauses of BS 8204 1 2003 or BS 8204 2 2003 should be followed and BRE Report 460 2003 BRE building elements floors and flooring performance diagnosis maintenance repair and the avoidance of defects Chapter 4 2 should be cons
14. ce for other junctions and on limiting heat loss by 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 6 Condensation risk Interstitial condensation f 6 1 Roots floors and walls should be designed and constructed in accordance with the relevant parts of gt BS 5250 2002 and Annex D and BRE Report BR 262 2002 for roots and floors in England and Wales including a wellsealed ceiling for the roof application or BS EN 15026 2007 using the approximate water vapour resistivity value of 306 MN s g m for the product 6 2 lt is essential that roof floor or wall design construction and maintenance not only limits opportunities for vapour migration by diftusion but also by convection through gaps cracks and laps in air vapour control layers and through penetrations This is particularly important for roots which include layers of high resistance to vapour diffusion on both sides of the insulation layer 6 3 Care should be taken to provide adequate ventilation particularly in rooms expected to experience high humidity Roofs 6 4 Dynamic simulations to BS EN 15026 2007 indicate that the VCL properties with seal
15. duct is satisfactory and will have a lite equivalent to that of the structure in which it is 55 d incorporated 14 Precautions 14 1 The installation process may produce a build up of harmful vapours and ventilation must be provided It is required that all personnel in the area for treatment wear the correct protective clothing breathing equipment and gloves The Certificate holder s instructions must be followed at all times Page 8 of 16 14 2 Vapours given off by certain components ie 4 4 diphenylmethane diisocyanate MDI are generally heavier than air and will tend to move to lower parts of the building These parts should be suitably ventilated 14 3 If vapour levels need to be measured methods should be those recommended by the Health and Satety Executive Certain applications ie confined roots require the use of extractor fans as recommended by the Certificate holder 14 4 To comply with the requirements of Section 4 of the Health and Satety at Work Act 1974 it is essential that there is an exchange of information between the client and the installer before spray operations commence on any site Existing health hazards and those brought into the premises by the installer should be discussed and measures agreed to deal with them effectively 14 5 After installation in lott voids tire warning labels must be placed in prominent positions if the foam is to be left exposed The foam is a combustible material adequate precautions
16. e building lt 50 m to a dwelling 0 18 0 18 0 22 New dwelling limit 0 18 0 20 0 25 New non domestic limit O20 0 22 0 27 Notional non dwelling 0 25 0 25 0 30 Conversion of heated building 0 25 0 25 0 30 1 Flexible approaches on existing buildings are given in the Technical Handbooks 2 Hybrid pitched root 3 All other roof insulation 4 Pitched roof Table 7 Mean design roof floor and wall U values Northern Ireland Construction U value VWV m K7 Root Floor Wall Existing building new replaced renovated or retained roof 0 16 Notional dwelling 0 16 9 23 0 35 Existing building new replaced renovated or retained roof 0 20 Existing building new roof floor or wall 0 20 0 22 0 30 Building new build limit O25 0 25 0 35 Notional non domestic building 0 29 0 25 0 35 Existing building replaced renovated or retained root floor or wall O25 0 25 0 35 1 Flexible approaches on existing buildings are given in the Technical Booklets 2 Hybrid pitched root 3 Pitched roof insulation at ratter level 4 Flat roof Page 6 of 16 5 2 The product can maintain or contribute to maintaining continuity of thermal insulation at junctions between elements and openings Default 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 guidan
17. ed laps detailed in Table 8 are acceptable in roots with no penetrations The suitability of other constructions may be assessed by using an appropriate dynamic modelling package see section 16 2 Table 8 Vapour control layer properties VCL equivalent air layer VCL water vapour Roof type thickness sq resistance m MN s g7 10 50 Flat root 10 50 Hybrid pitched root 6 5 It the product is installed in roots with bitumen telt sarking board a ventilation gap minimum 50 mm from eaves to ridge must be provided to the underside of the root tile underlay and the upper tace of the insulation unless a vapour permeable underlay is used 6 6 Inadvertent air infiltration in hybrid roofs contributes to reducing the risk of interstitial condensation Surface condensation 73 U value does not exceed 0 7 W m K for walls and floors and 0 35 W m K7 for roofs at any point and the junctions are designed in accordance with Limiting thermal bridging and air leakage Robust construction details for dwellings and similar buildings TSO 2002 BRE Information Paper IP 1 06 or section 5 2 of this Certificate Foo Roots floors and walls designed to BS 5250 2002 Section 8 will adequately limit the risk of surface Fe Roots floors and walls will adequately limit the risk of surface condensation where the thermal transmittance condensation where the thermal transmittance U value does not exceed 1 2 VWW m K at any point Guidance may by
18. ent similar or related to the aforementioned 17 3 This Certificate will remain valid for an unlimited period provided that the product system and the manufacture and or fabrication including all related and relevant processes thereof e are maintained at or above the levels which have been assessed and found to be satisfactory by the BBA e continue to be checked as and when deemed appropriate by the BBA under arrangements that it will determine e are reviewed by the BBA as and when it considers appropriate 17 4 In granting this Certificate the BBA is not responsible for e the presence or absence of any patent intellectual property or similar rights subsisting in the product system or any other product system e the right of the Certificate holder to manufacture supply install maintain or market the product system e individual installations of the product system including the nature design methods and workmanship of or related to the installation e the 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 intormation relating to the manufacture supply installation use and maintenance 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 and maintained It does not purport in any way to restate the requirements
19. g a breathable root tile underlay Pitched roofs including hybrid roofs tiled or slated to BS 5534 2003 3 11 The product can be applied directly to breathable roof tile underlays or to the BASF rafter slides and BASF ventilators which create a ventilation gap between the insulation and the bitumen felt sarking board Additionally the product is applied to plasterboard between ceiling joists to create a hybrid root 3 12 Care must be taken to ensure the integrity of the roof tile underlay drape when spraying the product see section 15 4 3 13 Pitched roots are defined for the purpose of this Certificate as those roofs having a pitch in excess of 15 Concrete ground floor constructions 3 14 The product must not be used where it may come into contact with moisture trom the ground 3 15 Ground supported concrete floors incorporating the product must include a suitable damp proot membrane dpm laid in accordance with the relevant clauses of CP 102 1973 BS 8102 1990 and or BS 8215 1991 3 16 Concrete ground floors incorporating the product must include a dom or suitable ventilation of the subfloor as appropriate 3 17 The overlay should be acementbased floor screed laid in accordance with the relevant clauses of BS 8204 1 2003 and or BS 8204 2 2003 and BS 8000 9 2003 or a concrete slab in accordance with BS 8204 1 2003 and BS 8204 2 2003 External masonry walls insulated dry lining 3 18 Insulated dry lini
20. ing must not be used with this form of insulation 10 Floor loading The product when covered with a suitable floor covering is capable of resisting a uniformly distributed load of 53 lt 1 5 kN m and a concentrated load of lt 1 4 kN for category Al and type A situations for domestic and residential activities as defined in NA to BS EN 1991 1 1 2002 Tables NA 2 and BS 6399 1 1996 Table 1 respectively Further assessment is necessary in the case of duty walkways and floors subject to physical activities 11 Moisture penetration 11 1 The product must be used above the dom and must not be used where it may come into contact with moisture trom the ground 11 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 4 402 and 3 4 62 1 Technical Handbook Domestic 2 Technical Handbook Non Domestic Northern Ireland Technical Booklet C Section 1 12 Maintenance The product once installed does not require any regular maintenance and has suitable durability see section 13 provided the waterproof layers are inspected and maintained at regular intervals In pitched root applications when the foam is exposed any accidental damage that occurs can easily be rectified by the Certificate holder 13 Durability The durability of the pro
21. ion of materials and execution of masonry BS EN 1996 3 2006 Eurocode 6 Design of masonry structures Simplified calculation methods for unreintorced masonry siructures BS EN 15026 2007 Hygrothermal performance of building components and building elements Assessment of moisture transter by numerical simulation 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 trom the ground Page 14 of 16 Conditions of Certification 17 Conditions 17 1 This Certificate e relates only to the product system that is named and described on the front page e 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 Certiticate e is valid only within the UK e has to be read considered and used as a whole document it may be misleading and will be incomplete to be selective e is copyright of the BBA e 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 Parliament Statutory Instrument Directive Regulation British European or International Standard Code of Practice manufacturers instructions or any other publication or docum
22. ions porosity specitic heat capacity and long term projections of material moisture contents 16 3 The methods adopted for quality control relating to incoming materials and the installed product were examined and found to be satistactory Page 13 of 16 Bibliography BS 476 3 2004 Fire tests on building materials and structures Classification and method of test for external fire exposure fo roofs 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 476 21 1987 Fire tests on building materials and structures Methods for determination of the fire resistance of loadbearing elements of construction BS 5250 2002 Code of practice for control of condensation in buildings BS 5534 2003 Code of practice for slating and tiling including shingles BS 5628 3 2005 Code of practice for the use of masonry Materials and components design and workmanship BS 6229 2003 Flat roots with continuously supported coverings Code of practice BS 6399 1 1996 loading for buildings Code of practice for dead and imposed loads BS 6576 2005 Code of practice for diagnosis of rising damp in walls of buildings and installation of chemical damp proot courses BS 8000 3 2001 Workmanship on building sites Code of practice for masonry BS 8000 9 2003 Workmanship on building sites Cementitious levelling screeds and wearing sc
23. ng systems require careful detailing during installation around doors and windows to achieve a satistactory surtace for finishing In addition every attempt should be made to minimise the risk of thermal bridging at reveals and where heavy separating walls are attached to the external wall New work must be designed to accommodate the thickness of the dry lining particularly at reveals heads sills and in relation to ceiling height VWhere the dimensions of fixtures are critical eg bathrooms these should be checked before installation 3 19 lt is recommended that services which penetrate the dry lining eg light switches power outlets are kept to a minimum to limit damage to vapour checks External walls timber frame 3 20 Constructions incorporating a masonry outer leat such as masonry units and natural stone blocks should be in accordance with BS EN 1996 1 1 2005 BS EN 1996 1 2 2005 BS EN 1996 2 2006 BS EN 1996 3 2006 BS 5628 3 2005 and BS 8000 3 2001 The designed residual cavity width should be 50 mm wide 3 21 It is recommended that services which penetrate the dry lining eg light switches power outlets are kept to a minimum to limit damage to vapour checks In addition any penetrations should be either enclosed in plasterboard or stone mineral wool or suitably tested proprietary fire rated systems in order to preserve the fire resistance of the wall 3 22 Installation must not be carried out until the moisture co
24. ntent of the timber frame is less than 20 4 Practicability of installation The product must only be installed by contractors trained and approved by the Certificate holder in accordance with the Certificate holder s Installation Manual 5 Thermal performance 0 71 MBS EN ISO 6946 2007 and BRE Report BR 443 2006 Conventions for U value calculations using the thermal conductivity values in Table 1 Example U values tor pitched roofs flat roofs floors and walls are given in Tables 2 to 4 and typical design root floor and wall U values in Tables 5 to 7 Fortuitous air infiltration in hybrid roots increases the heat loss from the loft void and should be accounted for by adding a 10 correction factor to the calculated roof U value see Table 3 As Calculations of the thermal transmittance U value should be carried out in accordance with Page 4 of 16 Table 1 Thermal conductivity Insulation thickness Thermal conductivity mm Wm K lt 80 0 027 80 to 120 0 026 gt 120 0 025 Table 2 U values for pitched and flat roots and timber frame walls CE aa aaa aaa ssa Element type Timber dimensions mm W ALLTITE insulation mm and location U value with respect to ratter joist batten or stud VV m 2 K 1 inside between Existing sloping Rafters 50 x 150 roof with ventilated at 400 centres space below Battens inside 47 x 100 underlay at O00 centres 100 50 0 20 14 0 20 New sloping roof Rafters 47 x 200 161 0 1
25. obtained from BRE Report BR 262 2002 and section 5 2 of this Certificate 7 Behaviour in relation to fire 7 1 The internal face of the installed product achieved a Class 1 surface spread of flame rating when tested in accordance with BS 476 7 1997 7 2 The product must be protected from naked flames and other ignition sources during and after installation see also sections 9 1 9 2 and 14 5 7 3 When installed the product will be contained by a suitable lining board eg 12 5 mm plasterboard with all joints tully sealed and supported by rafters noggins or battens Therefore it will not contribute to the development stages of a fire until the lining is compromised Alternatively the ratters and the insulation foam in the pitched roof application may remain exposed atter conducting a condensation risk analysis in accordance with section 6 Although the insulation foam has a class 1 surface spread of flame rating to BS 476 7 1997 it could contribute to the development stages of a tire however to a limited extent in the early stages of the fire 7 4 Elements must incorporate cavity barriers at edges around openings at junctions with fire resisting elements and in cavities in accordance with the relevant provisions of the national Building Regulations and relevant purpose group The design and installation of cavity barriers must take into account any anticipated differential movement Page 7 of 16 External timber frame walls 7
26. reeds Code of practice BS 8102 1990 Code of practice for protection of structures against water from the ground BS 8102 2009 Code of practice for protection of below ground structures against water from the ground BS 8103 3 1996 Structural design of low rise buildings Code of practice for timber floors and roots for housing BS 8203 2001 Code of practice for installation of resilient floor coverings BS 8204 1 2003 Screeds bases and in situ Hoorings 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 1365 1 1999 Fire resistance tests for loadbearing elements Walls NA to BS EN 1991 1 1 2002 UK National Annex to Eurocode Actions on structures General actions Densities sel weight imposed loads for buildings BS EN 1995 1 1 2004 Eurocode 5 Design of timber structures General Common rules and rules for buildings BS EN 1996 1 1 2005 Eurocode 6 Design of masonry structures General rules for reinforced and unreintorced masonry structures BS EN 1996 1 2 2005 Eurocode 6 Design of masonry structures General rules Structural fire design BS EN 1996 2 2006 Eurocode 6 Design of masonry structures Design considerations select
27. t Masonry floors incorporating the product can meet this Standard with reference to clause 1 1 1012 See section 10 of this Certificate Standard S45 Condensation Comment The risk of interstitial condensation must be assessed for each construction The product can adequately limit the risk of surface condensation with reference to clauses 3 15 12 3 175 312 3 15 Atle 3 15 52 3 15 62 and 3 15 72 See sections 6 1 and 6 8 of this Certificate Standard 6 lo Carbon dioxide emissions Standard eZ Building insulation envelope Comment The product can contribute to a roof floor or wall satisfying these Standards with reference to clauses oF eos Or 11 1 22 oe 1 3 6 1 6 62 NET 62S 6 2 AA 2 SIE O26 2 AM 6 2 82 fo 6 2 1 1 M2 6 2 12 and 6 2 1 3 2 See sections 5 1 and 5 2 of this Certificate Regulation 12 Building standards conversions Comment All comments given for these products under Regulation 9 also apply to this Regulation with reference to clause 0 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 product is acceptable See section 13 and the Installation part of this Certificate Regulation C5 Condensation Comment The risk of interstitial condensation must be assessed for each construction See section 6 1 of this Cer
28. t is classified as harmful under The Chemicals Hazard Information and Packaging for Supply Regulations 2009 CHIP4 and drums bear the appropriate hazard warning sign When cured the product does not constitute a health hazard Assessment and Technical Investigations The following is a summary of the assessment and technical investigations carried out on WALLTITE 3 General 3 1 WALLTITE is satisfactory for use as an insitu thermal insulation system to reduce the thermal transmittance U value of roofs floors and walls in new or existing domestic or similar buildings 3 2 The product can be used e between timber rafters only e between and under timber rafters e as a combination between and under timber rafters and between ceiling joists in a non habitable root hybrid roof which contain both sloping and horizontal insulation e between timber joists in flat roofs e Concrete ground floors e between the studs of conventional timber trame external wall constructions e between the void created by timber battens on the internal face of external masonry walls and lined with plasterboard 1 Masonry constructions include clay and calcium silicate bricks concrete blocks and natural and reconstituted stone blocks It is essential that such walls are constructed having regard to the local wind driven rain index 3 3 New constructions must be designed in accordance with the relevant recommendations of Boo 200 7 200
29. titicate Regulation D1 Stability Comment Masonry floors incorporating the product can meet this Regulation See section 10 of this Certificate Regulation F2 a i Conservation measures Regulation F3 2 Target carbon dioxide Emissions Rate Comment The product can contribute to meeting these Regulations See sections 5 1 and 5 2 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 2 Delivery and site handling 2 1 to 2 3 and 14 Precautions 14 1 to 14 6 of this Certificate Non regulatory Information NHBC Standards 2011 NHBC accepts the use of WALLTITE when installed and used in accordance with this Certificate in relation to NHBC Standards Chapter 5 1 Substructure and ground bearing floors Chapter 5 2 Suspended ground floors Chapter 6 1 External masonry walls Chapter 6 2 External timber framed walls Chapter 7 1 Flat roofs and balconies and Chapter 7 2 Pitched roofs Page 2 of 16 WALLTITE is a registered trademark of BASF Polyurethanes UK Ltd Technical Specification 1 Description 1 1 WALLTITE comprises a spray applied HFC blown rigid polyurethane foam which can be applied to pitched timber roofs including hybrid roots flat timber roots concrete
30. ulted Figure 4 Typical ground floor application dpm Walltite Page 11 of 16 Concrete slab overlay ground bearing only 15 18 The foam is spray applied to the wall around the floor perimeter edges to provide edge insulation It required a VCL minimum 0 125 mm thick is laid over the boards with 150 mm laps The concrete slab is laid to the required thickness in accordance with BS 8000 9 2003 and BS 8204 1 2003 Timber frame walls see Figure 5 15 19 The product is sprayed into the cavity formed by the studs as in section 15 4 15 20 Where required a VCL with lapped and sealed joints is placed over the stud face before applying the internal finish Figure 5 Typical timbertrame application Walltite plasterboard Masonry external walls 15 21 Installation should be in accordance with good dry lining practice and the relevant parts of the Certificate holder s literature 15 22 Before fixing the product sufficient time must be allowed for damp prooting treatments where applied to dry out the wall see also BS 6576 2005 for dry lining in conjunction with a chemical dpc application 15 23 This system may be used on any stable dry wall capable of taking the fixings for the timber battens 15 24 Wallpaper skirting picture rails gloss paint and projecting window boards are removed 15 25 Pretreated timber battens of sufficient thickness are mechanically fixed to the wall substrate at ma
31. ximum 600 mm centres Vertical battens are then titted with additional battens used around openings and to support heavy horizontal items 15 26 The product is sprayed into the cavity formed by the battens as in section 15 4 To avoid thermal bridging the product should be applied to window reveals 15 27 An ettective VCL with lapped and sealed joints is placed over the timber battens betore applying the internal finish unless an assessment to BS 5250 2002 indicates that it is not necessary 15 28 Jointing and finishing of the plasterboard lining is carried out in the appropriate manner applying plasterer s scrim to all joints and a thin coat of plaster Timber skirting can be fixed into the horizontal batten at floor level Page 12 of 16 16 Investigations 16 1 Results of independent test data relating to VVALLTITE were assessed in relation to thermal conductivity behaviour in relation to fire water vapour permeability closed cell content dimensional stability under specitied temperature and humidity conditions compressive strength compressive creep tensile adhesion strength 16 2 A series of dynamic computer simulations to BS EN 15026 2007 were carried out on a range of root constructions to asses the risk of interstitial condensation The simulations included building humidity class 4 meteorological data for solar irradiation direct and indirect and raintall for standard reterence years material moisture storage funct
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