1、Designation: C726 11Standard 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 in paren
2、theses 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 Department of Defense.1. Scope1.1 This specification covers the composition and physicalproperties of m
3、ineral wool insulation board used above struc-tural roof decks in building construction. The mineral woolroof insulation acts as a base for systems such as single-ply,polymer-modified bitumen and built-up roof. This specificationalso covers mineral wool insulation boards that incorporate afibrous hi
4、gh density upper layer on the top surface1.2 It is possible that the use of thermal insulation materialscovered by this specification will be regulated by buildingcodes or other agencies that address fire performance, or both.The fire performance of the material needs to be addressedthrough standard
5、 fire test methods established by the appropri-ate governing documents.1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This stand
6、ard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of the regulatory limitations prior to use.2. Referenced Documents2.
7、1 The following standards, of the issue in effect on thedate of material purchase, form a part of this specification tothe extent specified herein:2.2 ASTM Standards:2C165 Test Method for Measuring Compressive Propertiesof Thermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test M
8、ethod for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC203 Test Methods for Breaking Load and Flexural Prop-erties of Block-Type Thermal InsulationC209 Test Methods for Cellulosic Fiber Insulating BoardC303 Test Method for Dimens
9、ions and Density of Pre-formed Block and BoardType Thermal InsulationC390 Practice for Sampling and Acceptance of ThermalInsulation LotsC518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC665 Specification for Mineral-Fiber Blanket Thermal In-su
10、lation for Light Frame Construction and ManufacturedHousingC1363 Test Method for Thermal Performance of BuildingMaterials and Envelope Assemblies by Means of a HotBox ApparatusD312 Specification for Asphalt Used in RoofingD482 Test Method for Ash from Petroleum ProductsD450 Specification for Coal-Ta
11、r Pitch Used in Roofing,Dampproofing, and WaterproofingD2126 Test Method for Response of Rigid Cellular Plasticsto Thermal and Humid AgingE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE2058 Test Methods for Measurement of Synthetic PolymerMaterial Flammability Using a Fire
12、PropagationApparatus(FPA)2.3 Other Referenced Documents:CAN/ULC-S102 Standard Method of Test for SurfaceBurning Characteristics of Building Materials andAssem-blies3EN 12430 :1998/A1 Thermal Insulating Product for Build-ing Applications Determination of Behaviour UnderPoint Load4FM 4470 Approval Sta
13、ndard for Single-Ply, Polymer-Modified Bitumen Sheet, Built-Up Roof (BUR) and Liq-uid Applied Roof Assemblies for use in Class 1 and1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.20 onHomogeneous Inorganic
14、 Thermal Insulations.Current edition approved Sept. 1, 2011. Published September 2011. Originallyapproved in 1972. Last previous edition approved in 2005 as C726 051. DOI:10.1520/C0726-11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at service
15、astm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Underwriters Laboratories (UL), 2600 N.W. Lake Rd., Camas,WA 98607-8542, http:/4Available from European Committee for Standardization (CEN), AvenueMarnix 17,
16、 B-1000, Brussels, Belgium, http:/www.cen.eu.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Noncombustible Roof Deck Constructions5ISO 1716 :2002, Reaction-to-Fire Tests for Building Prod-ucts Determination of the Heat of Combustion
17、63. Terminology3.1 Definitions: Terms used in this specification are definedin Terminology C168.3.1.1 noncombustible corea fibrous roof insulation prod-uct conforming to the ash content, visible flaming and heat ofcombustion requirements 12.11.4. Classification4.1 The thermal insulation shall be of
18、the following types,classes and grades;4.1.1 Type IRoof insulation board comprised of a mono-lithic fibrous material having a fibrous high density uppersurface layer and a lower density fibrous bottom layer.4.1.1.1 Class 1Minimum upper surface layer actual den-sity of 11.2 lb/ft3(180 kg/m3) and a mi
19、nimum lower layeractual density of 7.5 lb/ft3(120 kg/m3).4.1.1.2 Class 2Upper surface layer and lower surfacelayer 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).4.1.2 Type IIRoof insulation board of singular density.4.1.2.1 Class 1
20、Minimum actual density of 9 lb/ft3(144kg/m3).4.1.2.2 Class 2Actual density less than Class 1.5. Ordering Information5.1 Orders for material purchased under this specificationshall include:5.1.1 Designation of this specification,5.1.2 Product name,5.1.3 Board dimensions,5.1.4 Quantity of material, an
21、d5.1.5 Special packaging or marking, (14.1 and 14.2)ifrequired.6. Materials and Manufacture6.1 Mineral wool roof insulation board shall consist ofmineral wool with an organic resin or other suitable binder.6.2 For built-up roofing or polymer modified bitumen sys-tems the board shall be faced during
22、manufacture on onesurface with a cover adequate for the application of Specifica-tion D312 asphalt or Specification D450 coal-tar pitch.6.3 For single ply membrane systems the board shall bepermitted to be faced or unfaced. For mechanically fastenedsingle ply membrane systems the board shall be perm
23、itted to befaced or unfaced. For adhered single ply membrane systemsthe board shall be permitted to be faced during manufacture onone surface with a cover adequate for the application of theadhesive used to secure the single ply membrane.7. Physical Properties7.1 The average thermal resistance, R, o
24、f specimenssampled in accordance with Practice C390 shall be as specifiedby the manufacturer.7.2 Nominal thickness required to obtain the specifiedresistance or conductance shall be as stated by the manufac-turer.7.3 Roof insulation boards shall have the limiting propertyvalues shown in Table 1.8. D
25、imensions and Tolerances8.1 The dimensions shall be as agreed upon between thepurchaser and manufacturer. Tolerances shall be as follows:Tolerance, in. (mm)Long dimension 614 (6)Short dimension 614 (6)Thickness 618 (3)The long and short dimension tolerances in this section arefor individual boards.
26、The tolerance for long and short dimen-sion averages for at least 20 boards shall be 6116 in. (2 mm).5FM Approvals, 1151 Boston-Providence Turnpike, P.O. Box 9102, Norwood,MA 02062.6Available from International Organization for Standardization (ISO), 1, ch. dela Voie-Creuse, CP 56, CH-1211 Geneva 20
27、, Switzerland, http:/www.iso.org.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, lb/ft3(kg/m3) 11.2 (180)Lower Density, lb/ft3(kg/m3) 7.5 (120)Type II:Class 1 Minimum Densi
28、ty, 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 to board surface, min,lbf/ft2(kPa)450 (22)Breaking load, min, lbf (N):Type 1 145 (645)Type 2 30
29、 (133)Water absorption, max, volume % 5ADimensional Stability:% Linear Change, Thickness, Max+200 6 4F (93 6 2C) 1-40 6 6 F (-406 3C) 1+158 64F(706 2C) 1% Linear Change, Length and Width, Max+200 6 4F (936 2C) 1-40 6 6 F (-40 6 3C) 1+158 6 4F (70 6 2C) 1Point Load at 5mm compression, min, N: Type I
30、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 #25Smoke # 50Response to thermal and humid aging, lineardimensional change, max,
31、%length and width: 2thickness: 2AThere shall be no delamination during the water absorption test.C726 1128.2 Board squareness shall be within required tolerance ifthe two diagonal measurements of the board differ by no morethan14 in. (6 mm).8.3 Board flatness shall be within required tolerance if,wh
32、en board is placed concave side up, the average distancebetween a flat supporting surface and the bottom board surfaceat the corners does not exceed516 in. (8 mm) over atemperature range from 20 to 140F (7 to 60C). Maximumdistance at an individual corner shall not exceed12 in. (13mm).8.4 The thermal
33、 resistance of any single specimen shall notbe more than 10 % below the value specified by the manufac-turer.8.5 Mass per unit area of any board, lb/ft2(kg/m2) shall bewithin 10 % of the value specified by the manufacturer.Average mass per unit area of at least 20 boards shall be within5 % of the va
34、lue specified by the manufacturer.9. Workmanship, Finish, and Appearance9.1 Insulation boards shall not have visible defects that willadversely affect service qualities.10. Sampling10.1 Sampling for qualification tests, if required, shall be inaccordance with Practice C390. Qualification tests will
35、beconducted on the physical requirements in 7.1 and Table 1.10.2 Sampling for inspection tests, if required, shall be inaccordance with Practice C390. Inspection requirements aredimensions (Section 8) plus any other properties as agreedupon between the purchaser and manufacturer.11. Specimen Prepara
36、tion11.1 Specimens for all tests shall include any factory-applied cover. Take care that the cover is not partially detachedin the process of cutting specimens.11.2 Unless otherwise specified, condition samples prior tocutting specimens for at least 12 h at 73 6 2F (24 6 1C), 506 5 % relative humidi
37、ty before testing.11.3 Unless otherwise stated testing of Type I product shallbe done with the higher density surface layer facing up.12. Test Methods12.1 Thermal ResistanceTest Method C177, C518,orTest Method C1363 at a mean temperature of 75 6 2F (24 61C) and 40F (22C) minimum temperature gradient
38、 acrossthe thickness of the test specimen or at a mean temperatureagreed upon between the purchaser and manufacturer. Sometypical additional mean temperatures of interest are 25F(-4C) and 110F (43C).12.2 Compressive ResistanceTest Method C165, Proce-dure A. Crosshead speed shall be 0.16 0.01 in. (2.
39、5 6 0.25mm) for each 1 in. (25.4 mm) of specimen thickness.Atotal offour (4) specimens shall be tested with one (1) specimen fromeach of four (4) different boards. The average of the resultsshall not be less than those defined in Table 1 and anyindividual specimen shall not be less than 90% of the m
40、inimumin Table 1.12.3 Tensile Strength Perpendicular to the Board SurfaceTest Methods C209, see Test Conditions and Tensile StrengthPerpendicular to Surface, except that the specimens shall be 6in. by 6 in. (150 mm by 150 mm).Atotal of four (4) specimensshall be tested with one (1) specimen from eac
41、h of four (4)different boards. The average of the results shall not be lessthan those defined in Table 1 and any individual specimen shallnot be less than 90% of the minimum in Table 1.12.4 Breaking Load Test Methods C203, Method I, Pro-cedure D. Specimen width shall be 6 in. (152 mm) and supportspa
42、n shall be 10 in. (254 mm). A total of four (4) specimensshall be tested with one (1) specimen from each of four (4)different boards. The average of the results shall not be lessthan those defined in Table 1 and any individual specimen shallnot be less than 90% of the minimum in Table 1.12.5 Water A
43、bsorptionTest Methods C209 (see WaterAbsorption section). When material is thicker than 1.0 in., splitthe material to give a specimen thickness of 1.00 6 0.03 in. ForType 1 product, test at 1 inch or the minimum manufacturedthickness as slicing would not provide a representative speci-men. The test
44、specimen shall include the faced side of thematerial if applicable. Immerse the specimen with the facedsurface down.Atotal of four (4) specimens shall be tested withone (1) specimen from each of four (4) different boards.12.6 Surface Burning Characteristics of BuildingMaterialsTest with the bottom s
45、urface exposed to the testflame. Test in accordance with Test Method E84. For Canada,test in accordance with Test Method CAN/ULC-S102. Whenthe referenced Canadian document in this specification isreferred to in applicable Canadian building codes, the editions,referenced by those building codes, shal
46、l govern.12.7 DimensionsTest 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 ofthe results shall not
47、be less than those defined in Table 1 andany individual specimen shall not be less than 90% of theminimum in Table 1.12.9 Dimensional StabilityTest Method D2126 exceptthat each specimen shall be 12 by 12 in. (300 by 300 mm) bythe full thickness. A total of four (4) specimens shall be testedwith one
48、(1) specimen from each of four (4) different boards.12.9.1 The standard environmental conditions shall be asfollows:Temperature Relative Humidity, %RH Exposure Time, DaysF C+200 6 4(936 2) Ambient 7-40 6 6 (-40 6 3) Ambient 7+158 6 4(706 2) 97 6 3% 712.10 DensityTest for actual density in accordance
49、 withTest Method C303.12.10.1 To test the upper and lower surface layer densitiesof Type 1 product, the layers are separated using slicingprocedures such as a band saw. Report the thickness used forthis determination. For testing purposes the upper layer thick-ness is12 inch (12.7 mm) for Type I products.12.11 Noncombustible CoreSee Note 1.12.11.1 When tested in accordance with Test Method D482,the samples shall have a minimum content of 90% ash. Whena single test produces a result of less than 90%, two (2
