1、BS 4841-6:2006Rigid polyisocyanurate (PIR) and polyurethane (PUR) products for building end-use applications Part 6: Specification for laminated boards with auto-adhesively or separately bonded facings for use as thermal insulation for floorsICS 91.100.60NO COPYING WITHOUT BSI PERMISSION EXCEPT AS P
2、ERMITTED BY COPYRIGHT LAWBRITISH STANDARDPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when the document was last issued. BSI 2006ISBN 0 580 48194 8The following BSI references relate to the work on this standard:Committee reference PRI/72/4Draft f
3、or comment 05/30125016 DCPublication historyFirst published, July 2006Amendments issued since publicationAmd. no. Date Text affectedBS 4841-6:2006 BSI 2006 iBS 4841-6:2006ContentsForeword ii1 Scope 12 Normative references 13 Terms, symbols and definitions 14 Construction and composition 25 Requireme
4、nts 36 Designation 67 Marking 6AnnexesAnnex A (informative) Method for the determination of areas of unbonded facings 7Annex B (informative) Information for users and designers, insulation board design U values 9Annex C (informative) Reaction to fire performance of PIR and PUR products and recommend
5、ations regarding their use 9Annex D (informative) Information on the installation of the insulation boards into floors 9Bibliography 11List of tablesTable 1 Tolerances for lengths and widths 3Table 2 Classes for thickness tolerances 3Table 3 Deviation from flatness 4List of figuresFigure 1 Diagram t
6、o explain orientations for compressive strength measurements 5Figure A.1 Determination of area(s) of unbonded facings: cutting and marking of the test specimen 8Summary of pagesThis document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 11, an inside back cover and a bac
7、k cover.ii BSI 2006BS 4841-6:2006ForewordPublishing informationThis British Standard was published by BSI and came into effect on 20 July 2006. It was prepared by Subcommittee PRI/72/4, Polyurethane,under the authority of Technical Committee PRI/72, Rigid cellular materials.Information about this do
8、cumentThis British Standard has been introduced to specify the requirements needed to ensure fitness for purpose of those polyurethane and polyisocyanurate cored insulation roofboards with auto-adhesively or separately bonded flexible and/or rigid facings used in pitched roofs in the United Kingdom.
9、 The requirements have been written so that products conforming to BS 4841-6 also conform to BS EN 13165:2001 (including amendments 1 and 2) whilst satisfying the specified minimum performance levels of the properties included in the current standard.Additional information for the guidance of users,
10、 installers and designers is given in informative Annexes A, B, C and D to this standard.The other parts of BS 4841 have been revised to reflect recent technical advances and to take into account the European Standard BS EN 13165:2001 (including amendments 1 and 2).Presentational conventionsThe prov
11、isions of this standard are presented in roman (i.e. upright) type. Its requirements are presented in sentences in which the principal auxiliary verb is “shall”.Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.C
12、ontractual and legal obligationsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations. BSI 2006 1BS 4841-6:20061 ScopeThis British Sta
13、ndard specifies requirements for polyisocyanurate (PIR) and polyurethane (PUR) cored laminated boards with auto-adhesively or separately bonded flexible and/or substantial rigid facings for use as thermal insulation in floors. NOTE 1 Because of the changes introduced into this standard, products con
14、forming to this standard also conform to BS EN 13165:2001 (including amendments 1 and 2).NOTE 2 Additional information for the guidance of users, installers and designers is given in informative Annexes A, B, C and D to this standard.2 Normative referencesThe following referenced documents are indis
15、pensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced standard (including any amendments) applies.BS EN 822:1995, Thermal insulating products for building applications Determination of length
16、and widthBS EN 823, Thermal insulating products for building applications Determination of thicknessBS EN 825:1995, Thermal insulating products for building applications Determination of flatnessBS EN 826:1996, Thermal insulating products for building applications Determination of compression behavi
17、ourBS EN 1607:1997, Thermal insulating products for building applications Determination of tensile strength perpendicular to facesBS EN 13165:2001, Thermal insulation products for buildings Factory made rigid polyurethane foam (PUR) products SpecificationBS EN 13501-1:2001, Fire classification of co
18、nstruction products and building elements Classification using test data from reaction to fire testsBS EN ISO 11925-2:2002, Reaction to fire tests Ignitability of building products subjected to direct impingement of flame Single-flame source test3 Terms, symbols and definitions3.1 Terms and definiti
19、ons For the purposes of this part of BS 4841 the following terms and definitions apply.3.1.1 auto-adhesively bonded facingNOTE These facings can be flexible or rigid.facing that becomes bonded onto the PIR or PUR core during the process of creating itBS 4841-6:20062 BSI 20063.1.2 separately bonded f
20、acingNOTE These facings can be flexible or rigid.facing that is bonded onto the PIR or PUR core in a separate manufacturing process3.1.3 polyisocyanurate productrigid cellular plastics insulation material or product with a substantially closed cell structure mainly based on polymers of the isocyanur
21、ate type3.1.4 polyurethane productrigid cellular plastics insulation material or product with a substantially closed cell structure mainly based on polymers of the polyurethane type3.2 SymbolsdNnominal thickness of the product in mmDdeclared thermal conductivity in W/(mK)Sbdeviation from squareness
22、in mm/mSmaxmaximum deviation from flatness in mm/m4 Construction and composition4.1 GeneralThe insulation boards shall consist of an insulating core (4.2) with either two bonded flexible facings (4.3) or two substantial rigid facings (4.4).4.2 Core product typeThe core of the product type shall be o
23、f rigid polyisocyanurate (PIR) or polyurethane (PUR).4.3 Flexible facingsBoth flexible facings of the insulation boards shall be functional or decorative, e.g. paper, metal foil, glass tissue or mineralized glass. Both faces need not be identical.4.4 Substantial rigid facings4.4.1 GeneralSubstantial
24、 rigid facings shall consist of either calcium silicate in accordance with 4.4.2 or plasterboard in accordance with 4.4.3.4.4.2 Calcium silicateWhen tested in accordance with BS EN 13501-1:2001 calcium silicate boards shall have a reaction to fire classification of Euroclass A1 or A2.4.4.3 Plasterbo
25、ardWhen tested in accordance with BS EN 13501-1:2001 plasterboard facings shall have a reaction to fire classification of Euroclass A1 or A2. BSI 2006 3BS 4841-6:2006NOTE The type of facings and the degree of their bonding are crucial to ensure good service performance for the laminated insulation b
26、oards. The degree of bonding, if required, should conform to the recommendations given in Annex A when evaluated according to the procedure given in Annex A.5 Requirements5.1 Thermal resistance and thermal conductivity The declared thermal conductivity Dof the flexible faced roofboards or core produ
27、ct shall be determined on the product in accordance with BS EN 13165:2001 (including amendments 1 and 2). The declared values of thermal conductivity for the roofboards shall not exceed 29 mW/mK at 10 C.NOTE See also Annex B for information on insulation board design U values and thermal resistance.
28、5.2 Dimensions 5.2.1 Length and width The length and width of boards shall be as specified in Table 1 when measured in accordance with BS EN 822:1995.NOTE UK manufacturers usually quote for their products lengths and widths with a maximum deviation of 3 mm for those dimensions up to and including 12
29、00 mm. Those with dimensions greater than 1200 mm may have lower tolerances than are quoted in Table 1.5.2.2 ThicknessThickness, d, shall be determined in accordance with BS EN 823. No test result shall deviate from the nominal thickness, dN, by more than the tolerances given in Table 2 for the decl
30、ared class. Table 1 Tolerances for lengths and widthsDimensions mmTolerancesmm4000 15Table 2 Classes for thickness tolerancesDimensions in millimetresClass Nominal thicknesses75TolerancesT1 3 4 +6, 3T2 2 3 +5, 2T3 1.5 1.5 1.5BS 4841-6:20064 BSI 20065.2.3 SquarenessSquareness shall be determined in a
31、ccordance with BS EN 824. The deviation from squareness on length and width, Sb, shall not exceed 6 mm/m.5.2.4 FlatnessFlatness shall be determined in accordance with BS EN 825:1995. The maximum deviation from flatness, Smax, shall not exceed the values given in Table 3.5.3 Compressive strength5.3.1
32、 Normal to the major plane of the boardWhen tested in accordance with BS EN 826:1996 the compressive strength of the board shall be not less than 120 kPa, which corresponds to the designation CS (10Y) 120 given in BS EN 13165:2001 (including amendments 1 and 2).NOTE See Figure 1.5.3.2 Parallel to th
33、e major plane of the boardWhen tested in accordance with BS EN 826:1996 the compressive strength of the core shall be not less than 100 kPa, which corresponds to the designation CS (10Y) 100 given in BS EN 13165:2001 (including amendments 1 and 2).NOTE See Figure 1.Table 3 Deviation from flatnessFul
34、l size product lengthmFull size product aream2Deviation from flatnessSmax mmJ2.50J0.75J5 0.75J 10 BSI 2006 5BS 4841-6:2006Figure 1 Diagram to explain orientations for compressive strength measurements5.4 Dimensional stability under specified temperature and humidity conditionsWhen tested in accordan
35、ce with the procedure in BS EN 13165:2001, Clause 4.2.6 (including amendments 1 and 2) the insulation boards shall have a performance of at least DS(TH)5.5.5 Tensile strength normal to the major plane of the boardWhen tested in accordance with BS EN 1607:1997 the insulation boards shall have a tensi
36、le strength of not less than 60 kPa which corresponds to the designation TR60 given in BS EN 13165:2001 (including amendments 1 and 2).5.6 Reaction to fire When tested in accordance with BS EN ISO 11925-2:2002 the insulation boards shall have a minimum classification of F (no performance determined)
37、 as determined according to BS EN 13501-1:2001.NOTE 1 Class F is also “No performance determined”.NOTE 2 For further information on the fire performance characteristics of PIR and PUR see Annex C.Normal to the major plane of the board (120 kPa)Parallel to the major plane of the board (100 kPa)Major
38、plane of the boardBS 4841-6:20066 BSI 20066 DesignationNOTE The use of BS EN 13165 in this designation should be interpreted as including amendments 1 and 2.The boards shall be given the following designation:“BS 4841-6:2006/BS EN 13165: XX: Y: W”where: XX is the thermal conductivity in mW/mK (see 5
39、.1); Y is the reaction to fire classification (see 5.6); W is the core type either PUR or PIR (see 4.2).7 MarkingThe product, packages or invoices shall be marked with at least the following information:a) manufacturers name or trademark;b) product designation as given in Clause 61);c) manufacturers
40、 description and/or product reference.1)Marking BS 4841-6:2006/BS EN 13165 on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets the requirements of this specification and BS EN 13165 (including am
41、endments 1 and 2). The accuracy of the claim is solely the claimants responsibility. Such a declaration is not to be confused with third party certification of conformity, which may also be desirable. BSI 2006 7BS 4841-6:2006Annex A (informative) Method for the determination of areas of unbonded fac
42、ingsA.1 PrincipleThe unbonded area is established by removing loose facing material after cutting up the specimen.A.2 ApparatusA.2.1 Bandsaw or similar fine toothed saw.A.2.2 Means for measuring the dimensions of unbonded areas with an accuracy of 0.5 mm, e.g. a rule.A.3 Test specimenThe test specim
43、en should be a right parallelepiped with a length and breadth not exceeding 1 200 mm 600 mm. The thickness of the test specimen should be the full thickness of the insulation board laminate including facings.A.4 Number of test specimensOne test specimen should be tested.A.5 ConditioningTest specimen
44、s should be conditioned immediately before testing for a period of not less than 16 h at a temperature of (23 2) C and a relative humidity of (50 5)%.A.6 ProcedureConduct the test at (23 2) C. Mark the test specimen in a manner that identifies the upper and lower faces. Cut the test specimen paralle
45、l to either axis into strips 50 mm wide, each strip being marked so as to identify its original position relative to the other strips (see Figure A.1). Examine both faces of each strip to determine whether any of the facings are not bonded to the core.Remove any areas of facing and measure the unbon
46、ded area(s).NOTE 1 The necessity for identifying each individual strip and its relative position is to enable unbonded areas of the facing that might extend continuously across more than one strip to be computed as a single area. Individual areas may therefore be computed as well as the sum total of
47、 all such areas.NOTE 2 Felt marker pens are most suitable for marking the edges of the test specimen.A.7 Expression of resultsMeasure all unbonded areas individually as well as the sum total of all such areas and express the results as a percentage of the original area of the test specimen.BS 4841-6
48、:20068 BSI 2006When tested in accordance with A.1 to A.6 insulation boards should have no single area of non-adhesion between the facing and the core exceeding 72 cm2, and in total the unbonded areas for any one face should not exceed an area greater than 5% of that face.A.8 Test reportThe test repo
49、rt should include the following:a) the identification of the insulation board tested;b) the individual unbonded areas for each face measured, expressed as a percentage of the original area of the test specimen;c) the sum of the unbonded areas for each face measured, expressed as a percentage of the original area of the test specimen;d) the description and date of this specification, i.e. BS 4841-6:2006.Figure A.1 Determination of area(s) of unbonded facings: cutting and marking
