1、Designation: C726 12C726 17Standard Specification forMineral Wool Roof Insulation Board1This standard is issued under the fixed designation C726; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number i
2、n parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.1 This specification covers the composition and physical pr
3、operties of mineral wool insulation board used above structuralroof decks in building construction. The mineral wool roof insulation acts as a base for systems such as single-ply,polymer-modified bitumen and built-up roof. This specification also covers mineral wool insulation boards that incorporat
4、e afibrous high density upper layer on the top surface1.2 It is possible that the use of thermal insulation materials covered by this specification will be regulated by building codesor other agencies that address fire performance, or both. The fire performance of the material needs to be addressed
5、throughstandard fire test methods established by the appropriate governing documents.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standar
6、d.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of the regulatorylimitations prior to use.1.5 This in
7、ternational standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) C
8、ommittee.2. Referenced Documents2.1 The following standards, of the issue in effect on the date of material purchase, form a part of this specification to the extentspecified herein:2.2 ASTM Standards:2C165 Test Method for Measuring Compressive Properties of Thermal InsulationsC168 Terminology Relat
9、ing to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of theGuarded-Hot-Plate ApparatusC203 Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal InsulationC209 Test Methods for Cellulosic Fiber Insulatin
10、g BoardC303 Test Method for Dimensions and Density of Preformed Block and BoardType Thermal InsulationC390 Practice for Sampling and Acceptance of Thermal Insulation LotsC518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter ApparatusC665 Specification for
11、Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured HousingC1363 Test Method for Thermal Performance of Building Materials and EnvelopeAssemblies by Means of a Hot BoxApparatusC1763 Test Method for Water Absorption by Immersion of Thermal Insulation MaterialsD312 S
12、pecification for Asphalt Used in RoofingD482 Test Method for Ash from Petroleum Products1 This specification is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.20 on HomogeneousInorganic Thermal Insulations.Current edition appro
13、ved May 1, 2012March 1, 2017. Published May 2012April 2017. Originally approved in 1972. Last previous edition approved in 20112012 asC726 11.C726 12. DOI: 10.1520/C0726-12. 10.1520/C0726-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at servi
14、ceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. B
15、ecauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 10
16、0 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1D450 Specification for Coal-Tar Pitch Used in Roofing, Dampproofing, and WaterproofingD2126 Test Method for Response of Rigid Cellular Plastics to Thermal and Humid AgingE84 Test Method for Surface Burning Characterist
17、ics of Building MaterialsE2058 Test Methods for Measurement of Material Flammability Using a Fire Propagation Apparatus (FPA)2.3 Other Referenced Documents:CAN/ULC-S102 Standard Method of Test for Surface Burning Characteristics of Building Materials and Assemblies3EN 12430 :1998/A1 Thermal Insulati
18、ng Product for Building Applications Determination of Behaviour Under Point Load4FM 4470 Approval Standard for Single-Ply, Polymer-Modified Bitumen Sheet, Built-Up Roof (BUR) and Liquid Applied RoofAssemblies for use in Class 1 and Noncombustible Roof Deck Constructions5ISO 1716 :2002, Reaction-to-F
19、ire Tests for Building Products Determination of the Heat of Combustion63. Terminology3.1 Definitions:Terms used in this specification are defined in Terminology C168.3.1.1 noncombustible corea fibrous roof insulation product conforming to the ash content, visible flaming and heat ofcombustion requi
20、rements 12.11.4. Classification4.1 The thermal insulation shall be of the following types, classes and grades;4.1.1 Type IRoof insulation board comprised of a monolithic fibrous material having a fibrous high density upper surface layerand a lower density fibrous bottom layer.4.1.1.1 Class 1Minimum
21、upper surface layer actual density of 11.2 lb/ft3 (180 kg/m3) and a minimum lower layer actualdensity of 7.5 lb/ft3 (120 kg/m3).4.1.1.2 Class 2Upper surface layer and lower surface layer density less than Class 1.(1) Grade A Minimum point load of 146 lbf (650 N).(2) Grade B Point load 146 lbf (650 N
22、).4.1.2 Type IIRoof insulation board of singular density.4.1.2.1 Class 1Minimum actual density of 9 lb/ft3 (144 kg/m3).4.1.2.2 Class 2Actual density less than Class 1.5. Ordering Information5.1 Orders for material purchased under this specification shall include:5.1.1 Designation of this specificati
23、on,5.1.2 Product name,5.1.3 Board dimensions,5.1.4 Quantity of material, and5.1.5 Special packaging or marking, (14.1 and 14.2) if required.6. Materials and Manufacture6.1 Mineral wool roof insulation board shall consist of mineral wool with an organic resin or other suitable binder.6.2 For built-up
24、 roofing or polymer modified bitumen systems the board shall be faced during manufacture on one surface witha cover adequate for the application of Specification D312 asphalt or Specification D450 coal-tar pitch.6.3 For single ply membrane systems the board shall be permitted to be faced or unfaced.
25、 For mechanically fastened single plymembrane systems the board shall be permitted to be faced or unfaced. For adhered single ply membrane systems the board shallbe permitted to be faced during manufacture on one surface with a cover adequate for the application of the adhesive used to securethe sin
26、gle ply membrane.7. Physical Properties7.1 The average thermal resistance, R, of specimens sampled in accordance with Practice C390 shall be as specified by themanufacturer.7.2 Nominal thickness required to obtain the specified resistance or conductance shall be as stated by the manufacturer.7.3 Roo
27、f insulation boards shall have the limiting property values shown in Table 1.3 Available from Underwriters Laboratories (UL), 2600 N.W. Lake Rd., Camas, WA 98607-8542, http:/.4 Available from European Committee for Standardization (CEN), Avenue Marnix 17, B-1000, Brussels, Belgium, http:/www.cen.eu.
28、5 FM Approvals, 1151 Boston-Providence Turnpike, P.O. Box 9102, Norwood, MA 02062.6 Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http:/www.iso.org.C726 1728. Dimensions and Tolerances8.1 The dimensions shall be
29、as agreed upon between the purchaser and manufacturer. Tolerances shall be as follows:Tolerance, in. (mm)Long dimension 14 (6)Short dimension 14 (6)Thickness 18 (3)The long and short dimension tolerances in this section are for individual boards. The tolerance for long and short dimensionaverages fo
30、r at least 20 boards shall be 6116 in. (2 mm).8.2 Board squareness shall be within required tolerance if the two diagonal measurements of the board differ by no more than14 in. (6 mm).8.3 Board flatness shall be within required tolerance if, when board is placed concave side up, the average distance
31、 between aflat supporting surface and the bottom board surface at the corners does not exceed 516 in. (8 mm) over a temperature range from20 to 140F (7 to 60C). Maximum distance at an individual corner shall not exceed 12 in. (13 mm).8.4 The thermal resistance of any single specimen shall not be mor
32、e than 10 % below the value specified by the manufacturer.8.5 Mass per unit area of any board, lb/ft2 (kg/m2) shall be within 10 % of the value specified by the manufacturer.Average massper unit area of at least 20 boards shall be within 5 % of the value specified by the manufacturer.9. Workmanship,
33、 Finish, and Appearance9.1 Insulation boards shall not have visible defects that will adversely affect service qualities.TABLE 1 Physical PropertiesProperty RequirementType I:Class 1Minimum Upper Density, lb/ft3 (kg/m3) 11.2 (180)Minimum Lower Density, lb/ft3 (kg/m3) 7.5 (120)Class 2Upper Density, l
34、b/ft3 (kg/m3) 11.2 (180)Lower Density, lb/ft3 (kg/m3) 7.5 (120)Type II:Class 1 Minimum Density, lb/ft3 (kg/m3) 9.0 (144)Class 2 Density, lb/ft3 (kg/m3) 9.0 (144)Compressive resistance:at 25 % deformation, min, psi (kPa) 12 (83)at 10 % deformation min, psi (kPa) 7 (48)Tensile strength perpendicular t
35、o board surface, min,lbf/ft2 (kPa)450 (22)Breaking load, min, lbf (N):Type 1 60 (266)Type 2 30 (133)Water absorption, max, volume % 5ADimensional Stability:% Linear Change, Thickness, Max+200 4F (93 2C) 1-40 6 F (-40 3C) 1+158 4 F (70 2C) 1% Linear Change, Length and Width, Max+200 4F (93 2C) 1-40 6
36、 F (-40 3C) 1+158 4F (70 2C) 1Point Load at 5mm compression, min, N: Type I 650Noncombustible CoreAsh content (%) $90Visible Flaming NoneHeat of Combustion, max, BTU/lb (kJ/g) 860 (2.0)Corrosiveness Shall meetrequirements ofSpecification C665for SteelSurface Burning Characteristics Flame Spread #25S
37、moke # 50A There shall be no delamination during the water absorption test.C726 17310. Sampling10.1 Sampling for qualification tests, if required, shall be in accordance with Practice C390. Qualification tests will beconducted on the physical requirements in 7.1 and Table 1.10.2 Sampling for inspect
38、ion tests, if required, shall be in accordance with Practice C390. Inspection requirements aredimensions (Section 8) plus any other properties as agreed upon between the purchaser and manufacturer.11. Specimen Preparation11.1 Specimens for all tests shall include any factory-applied cover. Take care
39、 that the cover is not partially detached in theprocess of cutting specimens.11.2 Unless otherwise specified, condition samples prior to cutting specimens for at least 12 h at 73 6 2F (24 6 1C), 50 65 % relative humidity before testing.11.3 Unless otherwise stated testing of Type I product shall be
40、done with the higher density surface layer facing up.12. Test Methods12.1 Thermal ResistanceTest Method C177, C518, or Test Method C1363 at a mean temperature of 75 6 2F (24 6 1C)and 40F (22C) minimum temperature gradient across the thickness of the test specimen or at a mean temperature agreed upon
41、between the purchaser and manufacturer. Some typical additional mean temperatures of interest are 25F (-4C)(4C) and 110F(43C).12.2 Compressive ResistanceTest Method C165, ProcedureA. Crosshead speed shall be 0.16 0.1 6 0.01 in. (2.5 6 0.25 mm)for each 1 in. (25.4 mm) of specimen thickness. A total o
42、f four (4) specimens shall be tested with one (1) specimen from each offour (4) different boards. The average of the results shall not be less than those defined in Table 1 and any individual specimenshall not be less than 90% 90 % of the minimum in Table 1.12.3 Tensile Strength Perpendicular to the
43、 Board SurfaceTest Methods C209, see Test Conditions and Tensile StrengthPerpendicular to Surface, except that the specimens shall be 6 in. by 6 in. (150 mm by 150 mm). A total of four (4) specimensshall be tested with one (1) specimen from each of four (4) different boards. The average of the resul
44、ts shall not be less than thosedefined in Table 1 and any individual specimen shall not be less than 90% 90 % of the minimum in Table 1.12.4 Breaking LoadTest Methods C203, Method I, Procedure D. Specimen width shall be 6 in. (152 mm) and support spanshall be 10 in. (254 mm).Atotal of four (4) speci
45、mens shall be tested with one (1) specimen from each of four (4) different boards.The average of the results shall not be less than those defined in Table 1 and any individual specimen shall not be less than 90%90 % of the minimum in Table 1.12.5 Water AbsorptionTest MethodsMethod C209C1763 (see Wat
46、er Absorption section). , Method B. When material isthicker than 1.0 in., split the material to give a specimen thickness of 1.00 6 0.03 in. For Type 1 product, test at 1 inch or theminimum manufactured thickness as slicing would not provide a representative specimen.The test specimen shall include
47、the facedside of the material if applicable. Immerse the specimen with the faced surface down. A total of four (4) specimens shall be testedwith one (1) specimen from each of four (4) different boards.12.6 Surface Burning Characteristics of Building MaterialsTest with the bottom surface exposed to t
48、he test flame. Test inaccordance with Test Method E84. For Canada, test in accordance with Test Method CAN/ULC-S102. When the referencedCanadian document in this specification is referred to in applicable Canadian building codes, the editions, referenced by thosebuilding codes, shall govern.12.7 Dim
49、ensionsTest Methods C209, see Test Conditions, Thickness, and Size of Finished Board.12.8 Point LoadTest in accordance with EN 12430:1998/A1. A total of four (4) specimens shall be tested with one (1)specimen from each of four (4) different boards. The average of the results shall not be less than those defined in Table 1 and anyindividual specimen shall not be less than 90% 90 % of the minimum in Table 1.12.9 Dimensional StabilityTest Method D2126 except that each specimen shall
