BS 5803-2-1985 Thermal insulation for use in pitched roof spaces in dwellings - Specification for man-made mineral fibre thermal insulation in pelleted or granular form for applica.pdf

1、BRITISH STANDARD BS 5803-2: 1985 Incorporating Amendment No. 1 Thermal insulation for use in pitched roof spaces in dwellings Part 2: Specification for man-made mineral fibre thermal insulation in pelleted or granular form for application by blowing UDC 699.86:692.42:677.52 493.3BS5803-2:1985 This B

2、ritish Standard, having been prepared under the directionof the Elements and Components (of Diverse Materials)for Buildings Standards Committee, was published under the authority ofthe Board of BSI and comes intoeffect on 28February1985 BSI 08-1999 The following BSI references relate to the work on

3、this standard: Committee reference ECB/38 Draft for comment 83/10118 DC ISBN 0 580 14243 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Elements and Components (of Diverse Materials) for Buildings Standards Committee (ECB/-) to Techni

4、cal Committee ECB/38 upon which the following bodies were represented: Chartered Institution of Building Services Consumer Standards Advisory Committee of BSI Department of the Environment (Building Research Establishment, Fire Research Station) Department of the Environment (Housing and Constructio

5、n Industries) Department of the Environment (Property Services Agency) Eurisol (UK) (Association of Manufacturers of Mineral Fibre Insulation) Greater London Council Independent Waste Paper Processors Association Institution of Building Control Officers National Association of Loft Insulation Contra

6、ctors National Council of Building Materials Producers Royal Institute of British Architects Thermal Insulation Manufacturers Association Amendments issued since publication Amd. No. Date of issue Comments 8169 May 1994 Indicated by a sideline in the marginBS5803-2:1985 BSI 08-1999 i Contents Page C

7、ommittees responsible Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 Composition and form 1 4 General properties 1 5 Thermal insulation properties 2 6 Marking 2 Appendix A Method for the measurement of the installed thickness, coverage and density of man-made mineral fibre insulation 3 A

8、ppendix B Determination of corrosive impurities 6 Appendix C Determination of settlement at high humidity 6 Appendix D Determination of vibration settlement and settled density 7 Appendix E Effect of thermal insulation on domestic PVC sheathed electrical cable 9 Appendix F Determination of thermal p

9、roperties 10 Appendix G Determination of non-combustibility 11 Figure 1 Plan of simulated loft area for the determination of coverage and installed thickness 4 Figure 2 Measuring device 5 Figure 3 Specimen holder 12 Publications referred to Inside back coverBS5803-2:1985 ii BSI 08-1999 Foreword This

10、 Part of BS5803, having been prepared under the direction of the Elements and Components (of Diverse Materials) for Buildings Standards Committee. This Part covers the requirements for man-made mineral fibre in pelleted or granular form for application by blowing. Material used for thermal insulatio

11、n in pitched roof spaces in dwellings should not sustain vermin or encourage the growth of fungus either when dry or wetted with clean water. It should also be free from objectionable odour when in normal use and when wetted with clean water. As these properties are of a subjective nature it is not

12、possible to derive methods of test for them. They are not therefore included in the requirements for the materials contained in this Part but in considering the applicability of the materials in this Part they have been taken fully into account. It is essential that manufacturers draw the attention

13、of those using these materials to the possibility of skin and eye irritation and the need to minimize inhalation of dust and provide advice on precautions which should be taken seeitemsj) andk) of clause6. BS 5803 comprises the following Parts: Part 1: Specification for man-made mineral fibre therma

14、l insulation mats; Part 2: Specification for man-made mineral fibre thermal insulation in pelleted or granular form for application by blowing; Part 3: Specification for cellulose fibre thermal insulation for application by blowing; Part 4: Methods for determining flammability and resistance to smou

15、ldering; Part 5: Specification for installation of man-made mineral fibre and cellulose fibre insulation. Certification. It is strongly recommended that in view of the nature of this specification, manufacturers and purchasers make use of the certification facilities described on the inside back cov

16、er of this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages Thi

17、s document comprises a front cover, an inside front cover, pages i and ii, pages1 to 12, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS5803

18、-2:1985 BSI 08-1999 1 1 Scope This Part of BS5803 specifies requirements for man-made mineral fibre thermal insulation in pelleted or granulated form made from glass, rock or slag for installation by blowing in pitched roof spaces in dwellings. This Part does not apply to other forms of thermal insu

19、lation, and does not deal with methods of installation of insulating materials or with the general principles of insulation of pitched roofs. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions For the purposes of this Part of BS5803, th

20、e definitions given in BS874 and BS3533 apply together with the following. 2.1 man-made mineral fibre a generic term for all man-made, non-metallic inorganic fibres 2.2 usage the mass of blown fibre per unit area installed at a given thickness (in kg/m 2 ) 2.3 bag usage rate the number of bags of st

21、ated mass per100m 2of insulation installed at a given thickness 2.4 coverage the reciprocal of usage (in m 2 /kg) (seeAppendix A) 2.5 bag coverage rate the coverage multiplied by the stated mass of a bag of insulation (in m 2per bag) 2.6 R value thermal resistance (in m 2 K/W) assessed at the approp

22、riate thickness (seeAppendix F) 3 Composition and form The insulating material shall be composed of man-made mineral fibre manufactured from glass, rock or slag and may contain a thermosetting polymer binder. It shall be supplied in pelleted or granulated form. The material shall not contain extrane

23、ous foreign materials, non-fibrous glass, rock or slag. 4 General properties 4.1 The material shall not contain water soluble substances likely to accelerate the corrosion of metallic surfaces with which it comes into contact. It shall be deemed to be free form corrosive constituents if it complies

24、with the following requirements when tested in accordance with Appendix B: a) the pH value of the aqueous extract is between6 and10; b) the water soluble chloride content is less than0.10%; c) the water soluble sulphate content is less than0.25%. 4.2 The material shall not exhibit more than 5% settl

25、ement when tested in accordance withAppendix C. 4.3 The percentage settlement shall not exceed the value declared in itemg) of clause6 when tested in accordance withAppendix D. NOTEThis test is intended to simulate the effects of traffic vibration, heavy footsteps, door slamming, etc. over a period

26、of many years.BS5803-2:1985 2 BSI 08-1999 4.4 The material shall have no deleterious effect on PVC or similarly covered electrical wiring. When tested in accordance withAppendix E, the material shall be deemed to be satisfactory if all four of the cable test pieces show no cracks in their sheathing.

27、 Any discoloration of the insulation or discoloration of the cable sheathing, or both, shall be noted as indicative of plasticizer migration, but does not in itself constitute failure. 4.5 The insulating material shall meet the requirements for being designated non-combustible when tested in accorda

28、nce withAppendix G at the settled density determined in accordance withAppendix D. NOTEMaterial complying with this requirement cannot be deemed to be non-combustible in accordance with BS476-4. 5 Thermal insulation properties 5.1 The manufacturer shall declare the installed and settled thickness ne

29、eded to achieve R values of2.0, 2.5, 3.0, 3.5, 4.0, 4.5 and5.0m 2 K/W after settlement, calculated in accordance withF.4.2 andF.4.1 respectively. NOTEThe installed thickness required to yield R values other than those declared by the manufacturer may be determined by interpolation or extrapolation.

30、5.2 The actual value of R, when determined in accordance withF.4.3 shall be not less than90% of the manufacturers declared (or interpolated) value. 6 Marking Each bag (or package) shall be legibly and indelibly marked with the following. a) The number and date of this British Standard, i.e. BS 5803-

31、2:1985 1) . b) The manufacturers name, mark or symbol and country of origin. c) Type of material. d) Action to be taken in the event that the material becomes accidentally soaked. e) The bag mass. f) A table, giving R values and corresponding thickness information as specified in5.1, together with c

32、overage information based on the definitions and values given in2.3, 2.5 and itemse) andh) of this clause, as follows. g) Maximum percentage settlement. h) Average density as installed and after maximum settlement. i) Thermal conductivity (2) at settled density and a mean temperature of 10 C. j) A w

33、arning on the possibility of skin irritation. k) A warning on the need to minimize the inhalation of dust and the precautions to be taken. 1) Marking BS 5803-2:1985 on or in relation to a product is a claim by the manufacturer that the product has been manufactured to the requirements of the standar

34、d. The accuracy of such a claim is therefore solely the manufacturers responsibility. Enquiries as to the availability of third party certification to support such claims should be addressed to the Director, Quality Assurance Division, BSI, Maylands Avenue, Hemel Hempstead, Herts HP2 4SQ for certifi

35、cation marks administered by BSI or to the appropriate authority for other certification marks. R value Thickness required Average bag usage rate Maximum beg coverage rate (not to be exceeded) As installed After maximum settlement m 2 K/W mm mm bags/100 m 2 m 2 /bag 2.0 2.5 3.0 3.5 4.0 4.5 5.0BS5803

36、-2:1985 BSI 08-1999 3 Appendix A Method for the measurement of the installed thickness, coverage and density of man-made mineral fibre insulation A.1 Principle The installed thickness, coverage and density of man-made mineral fibre insulation supplied in bags and blown through a commercial unit, set

37、 to give its normal delivery rate, into a simulated loft area are determined. A.2 Apparatus A.2.1 Simulated loft area, 2450mm 2400mm 100mm deep constructed in accordance withFigure 1. A.2.2 Measuring device constructed in accordance withFigure 2. A.3 Procedure With the blowing nozzle of the commerci

38、al unit held horizontally and approximately1m above the simulated loft area, blow the fibre along the spaces between pairs of joists in turn to an approximate turn of100mm. Carefully remove any material resting on the tops of the joists. Position the measuring device at each of30 locations pre-marke

39、d on the joists at the spacing shown inFigure 1. Align the positioning marks on the device with the inner edges of the joists so that the rule is central in a joist space at the designated location. Take readings by pushing the rule gently downwards until its end contacts the surface of the insulati

40、on with the rule vertical. Remove the insulation from between the joists and weigh it to the nearest0.1kg. Take a second set of readings, at the same locations, but pushing the rule gently downwards until its end contacts the floor of the simulated loft area with the rule vertical. A.4 Calculations

41、A.4.1 Installed thickness Calculate the installed thickness a as the arithmetic mean, to the nearest millimetre, of the difference between the pairs of readings taken at each of the30locations. A.4.2 Coverage Determine the net ceiling area of the simulated loft by subtracting the area covered by the

42、 joists from the total area. Calculate the coverage C (in m 2 /kg) using the following equation: where A.4.3 Installed density Calculate the installed density i (in kg/m 3 ) using the following equation: where n is the net ceiling area (inm 2 ); m is the mass of the insulation (in kg). a is the inst

43、alled thickness (in mm); n is the net ceiling area (in m 2 ); m is the mass of the insulation (in kg). C n m - = i 1 000m an - =BS 5803-2:1985 4 BSI 08-1999 NOTE 1Frame made from timber 100mm 50mm. NOTE 2Base panel made from faced plywood to simulate plasterboard. Figure 1 Plan of simulated loft are

44、a for the determination of coverage and installed thicknessBS 5803-2:1985 BSI 08-1999 5 NOTE 1Body of device made from 75mm thickness timber, planed. NOTE 2Feet smooth faced and in same plane, so as to sit on simulated loft area timbers or collection boxes without rocking. Figure 2 Measuring deviceB

45、S5803-2:1985 6 BSI 08-1999 Appendix B Determination of corrosive impurities B.1 Apparatus B.1.1 pH meter complying with BS3145. B.2 Preparation of sample From the bulk sample, taken as described in BS2972, take five samples each of approximate mass5g, from separate units where possible. Disintegrate

46、 these samples and mix thoroughly. B.3 Procedure B.3.1 Determination of pH value of aqueous extract Weigh 2g of the prepared sample and shake well for10min with100mL of distilled or deionized water (pH value6.5 to7.5) at room temperature. Leave to settle for 5min and decant the solution if necessary

47、. Measure the pH value of the solution using the pH meter. Repeat the test on a further2g of the sample and report both pH values. B.3.2 Determination of water soluble chloride and sulphate Weigh 2g of the prepared sample and shake well for 10min with 100mL of distilled or deionized water (pH6.5 to7

48、.5) at room temperature. Leave to settle for 5min and then determine the sulphate and chloride content of the aqueous extract in accordance with BS3266. Appendix C Determination of settlement at high humidity C.1 Principle The degree of settlement of man-made mineral fibre insulation supplied in bag

49、s and blown through a commercial unit, set to give its normal delivery rate is determined, after subjection to high humidity. C.2 Apparatus C.2.1 Open-topped collection box, constructed from 10mm thick plywood and with internal measurements of 300mm 300mm 100mm deep. The top edges of the box shall be smooth and in the same plane. C.2.2 Measuring device, constructed as shown inFigure 2. C.2.3 Humidity chamber, maintained at 25 2 C and 90% to 95% r.h. C.3 Procedure C.3.1 Make positioning marks on the top o