1、BS 4841-1:2006Rigid polyisocyanurate (PIR) and polyurethane (PUR) products for building end-use applications Part 1: Specification for laminated insulation boards with auto-adhesively or separatelybonded facingsICS 91.100.60NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITIS
2、H STANDARDPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when the document was last issued. BSI 2006ISBN 0 580 04818 9The following BSI references relate to the work on this standard:Committee reference PRI/72/4Draft for comment 05/30124175DCPublica
3、tion historyFirst published, May 1975Second edition, October 1993Third edition, July 2006Amendments issued since publicationAmd. no. Date Text affectedBS 4841-1:2006 BSI 2006 iBS 4841-1:2006ContentsForeword ii1 Scope 12 Normative references 13 Terms, symbols and definitions 14 Construction and compo
4、sition 25 Requirements 36 Designation 67 Marking 6AnnexesAnnex A (informative) Method for the determination of areas of unbonded facings 7Annex B (informative) Information for users and designers 9Annex C (informative) Fire performance of PIR and PUR insulation products and fire recommendations rega
5、rding their use 9Annex D (informative) Information on the installation of the insulation boards into wall cavities 10Bibliography 12List of figuresFigure 1 Diagram to explain orientations for compressive strength measurements 5Figure A.1 Determination of area(s) of unbonded facings: cutting and mark
6、ing of the test specimen 8Figure D.1 Installation of PIR/PUR insulation boards 10Figure D.2 Installation of wall ties 11List of tablesTable 1 Tolerances for lengths and widths 3Table 2 Classes for thickness tolerances 3Table 3 Deviation from flatness 4Summary of pagesThis document comprises a front
7、cover, an inside front cover, pages i and ii, pages 1 to 12, an inside back cover and a back cover.ii BSI 2006BS 4841-1:2006ForewordPublishing 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
8、 authority of Technical Committee PRI/72, Rigid cellular materials.SupersessionThis part of BS 4841 supersedes BS 4841-1:1993, which is withdrawn.Information about this documentThis revision has been introduced to specify the requirements needed to ensure fitness for purpose of those PIR and PUR cor
9、ed laminated insulation boards with auto-adhesively or separately bonded flexible and rigid facings used in the insulation of cavity walls in the United Kingdom. The requirements have been written so that products conforming to BS 4841-1 also conform to BS EN 13165:2001 (including amendments 1 and 2
10、) whilst satisfying the specified minimum performance levels of the properties included in the current standard.The insulation boards specified in this standard are particularly suitable for use in wall cavities since their excellent thermal insulation performance enables the thin insulation boards
11、to be attached to the outside of the inner leaf. This provides a mechanism to insulate walls by creating partially filled cavities without destroying the principle function of the cavity which is to prevent rain penetration through the wall to the indoor area of the property. These other parts of th
12、e wall provide the strength, weather and fire resistance characteristics of the insulated wall. As the insulating board is located in the wall in a non-loadbearing position, only its ease of handling during installation plus its integrity for long-term adequate thermal insulation performance need be
13、 considered from a robustness point of view.Additional information for the guidance of users, installers and designers is given in informative Annexes A, B, C and D to this standard. The other parts of BS 4841 have also been revised to reflect recent technical advances and to take into account the E
14、uropean Standard BS EN 13165:2001 (including amendments 1 and 2).Presentational conventionsThe provisions 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 info
15、rmative material is presented in smaller italic type, and does not constitute a normative element.Contractual 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 Stan
16、dard cannot confer immunity from legal obligations. BSI 2006 1BS 4841-1:20061 ScopeThis British Standard specifies requirements for rigid polyisocyanurate (PIR) and polyurethane (PUR) cored laminated insulation boards with auto-adhesively and separately bonded flexible and/or rigid facings, for use
17、as thermal insulation for wall cavities. It also applies to products with one flexible facing and one rigid facing.NOTE 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 refere
18、nced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.BS EN 822:1995, Thermal insulating products for building applications
19、Determination of length and widthBS EN 823, Thermal insulating products for building applications Determination of thicknessBS EN 824:1995, Thermal insulating products for building applications Determination of squarenessBS EN 825:1995, Thermal insulating products for building applications Determina
20、tion of flatnessBS EN 826:1996, Thermal insulating products for building applications Determination of compression behaviourBS EN 1607:1997, Thermal insulating products for building applications Determination of tensile strength perpendicular to facesBS EN 13165:2001, Thermal insulation products for
21、 buildings Factory made rigid polyurethane foam (PUR) products SpecificationBS EN 13501-1, Fire classification of construction products and building elements Part 1: Classification using test data from reaction to fire tests3 Terms, symbols and definitions3.1 Terms and definitionsFor the purposes of
22、 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 4841-1:20062 BSI 20063.1.2 separately bonded facingNOTE These facings
23、 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 isocyanurate type3.1.4 polyureth
24、ane 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 mW/(mK)Sbdeviation from squareness in mm/mSmaxmaximum dev
25、iation 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 rigid facings (4.4), or one flexible facing (4.3) and one rigid facing (4.4).4.2 Core product typeThe cores of th
26、e product type shall be of rigid polyisocyanurate (PIR) or polyurethane (PUR).4.3 Flexible facingsThe flexible facings of the insulation boards shall be either functional or decorative, e.g. paper, metal foil, glass tissue, or mineralized glass with a minimum weight of 100 g/m2, or polyethylene coat
27、ed glass fibre. NOTE The two facings need not be identical.4.4 Rigid facingsRigid facings shall be substantially of inorganic composition.NOTE The type of facings and the degree of their bonding are crucial to ensure good service performance for the laminated insulation boards. The degree of bonding
28、, if required, should conform to the recommendations given in Annex A when evaluated according to the procedure given in Annex A. BSI 2006 3BS 4841-1:20065 Requirements5.1 Thermal resistance and thermal conductivity The declared thermal conductivity Dof the flexible faced boards or core product shal
29、l be determined in accordance with BS EN 13165:2001 (including amendments 1 and 2). The declared values shall not exceed 29 mW/mK at 10 C.NOTE See also B.2 for information on insulation board design U values.5.2 Dimensions 5.2.1 Length and width The length and width of insulation boards shall be as
30、given 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 1200 mm. Those with dimensions greater than 1200 mm may have lower tolerances than are
31、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 declared class. 5.2.3 SquarenessSquareness shall be determined in accordance with BS EN 8
32、24. The deviation from squareness on length and width, Sb, shall not exceed 6 mm/m.Table 1 Tolerances for lengths and widthsDimensions mmTolerances mm4000 15Table 2 Classes for thickness tolerancesDimensions in millimetresClass Nominal thicknesses75TolerancesT1 3 4 +6, 3T2 2 3 +5, 2T3 1.5 1.5 1.5BS
33、4841-1:20064 BSI 20065.2.4 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 Normal to the major plane of the boardWhen tested in accordance with BS EN 826:1996
34、 the minimum compressive strength of the board shall be 120 kPa, which corresponds to the designation CS (10Y) 120 given in BS EN 13165:2001 (including amendments 1 and 2).NOTE 1 See Figure 1.NOTE 2 The designers attention is drawn to the need for the insulation board to possess sufficient robustnes
35、s to withstand the handling procedures concerned with its delivery and installation.5.3.2 Parallel to the major plane of the boardWhen tested in accordance with BS EN 826:1996 the minimum compressive strength of the core shall be 100 kPa, which corresponds to the designation CS (10Y) 100 given in BS
36、 EN 13165:2001 (including amendments 1 and 2).NOTE See Figure 1.Table 3 Deviation from flatnessFull size product lengthmFull size product area m2Deviation from flatnessSmax mm5 2.505 0.755 5 0.755 10 BSI 2006 5BS 4841-1:2006Figure 1 Diagram to explain orientations for compressive strength measuremen
37、ts5.4 Dimensional stability under specified temperature and humidity conditionsWhen tested in accordance with the procedure in BS EN 13165:2001, 4.2.6, 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 accorda
38、nce with BS EN 1607:1997 the insulation boards shall have a tensile 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 classified by the procedure given in BS EN 13501-1 the boards shall have a
39、 minimum classification of class F. NOTE 1 Class F is also “No performance determined”.NOTE 2 The fire performance of insulation boards in isolation is not significant in terms of this end-use application since the UK Building Regulations Approved Document B 1 for masonry cavities with leaves of at
40、least 75 mm thick makes no fire requirements for products installed in these wall cavities.NOTE 3 For further information on the reaction to fire performance of PIR or PUR insulating products see Annex C.NOTE 4 For other cavities see UK Building Regulations ApprovedDocument B, B3, Section 10 1.Norma
41、l to the major plane of the board (120 kPa)Parallel to the major plane of the board (100 kPa)Major plane of the boardBS 4841-1:20066 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 desi
42、gnation:“BS 4841-1:2006/BS EN 13165: XX: Y: W”where:XX is the thermal conductivity, lD, in mW/mK (see 5.1);Y is the reaction to fire classification (see 5.6);W is the core type, either PIR or PUR (see 4.2).7 MarkingThe product, packages or invoices shall be marked with at least the following informa
43、tion:a) manufacturers name or trademark;b) product designation as given in Clause 61);c) manufacturers description and/or product reference.1)Marking BS 4841-1:2006/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 ma
44、nufacturer that the product meets the requirements of this specification and BS EN 13165. The accuracy of the claim is solely the claimants responsibility. Such a declaration is not to be confused with third party certification of conformity. BSI 2006 7BS 4841-1:2006Annex A (informative) Method for
45、the determination of areas of unbonded facingsA.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 area with an accuracy of 0.5 mm e.g.
46、 a rule.A.3 Test specimenThe test specimen should be a right parallelepiped with a length and breadth not exceeding 1200 mm 600 mm. The thickness of the test specimen should be the full thickness of the laminated insulation board including facings.A.4 Number of test specimensOne test specimen should
47、 be tested.A.5 ConditioningTest specimens 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 lo
48、wer faces. Cut the test specimen parallel 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 a
49、ny areas of facing and measure the unbonded 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 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 indi
