1、Designation: C 208 95 (Reapproved 2001)Standard Specification forCellulosic Fiber Insulating Board1This standard is issued under the fixed designation C 208; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision
2、. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 principal cellulosi
3、c fiberinsulating board types, grades, and sizes. Requirements arespecified for composition, construction, physical properties,tolerances, sampling procedures, and test methods.1.2 The values stated in inch-pound units are to be regardedas the standard. The metric values given in parentheses areprov
4、ided for information only.1.3 When the installation or use of thermal insulationmaterials, accessories, and systems may pose safety or healthproblems, the manufacturer shall provide the user appropriatecurrent information regarding any known problems associatedwith the recommended use of the company
5、s products and shallalso recommend protective measures to be employed in theirsafe utilization. The user shall establish appropriate safety andhealth practices and determine the applicability of regulatoryrequirements prior to use.2. Referenced Documents2.1 ASTM Standards:C 168 Terminology Relating
6、to Thermal Insulation2C 209 Test Methods for Cellulosic Fiber Insulating Board2C 390 Criteria for Sampling and Acceptance of PreformedThermal Insulation Lots2C 846 Practice for Application of Cellulosic Fiber Insulat-ing Board for Wall Sheathing2D 1037 Test Methods for Evaluating Properties of Wood-
7、Base Fiber and Particle Panel Materials3D 1554 Definitions of Terms Relating to Wood-Base Fiberand Particle Panel Materials3D 2164 Methods of Testing Structural Insulating RoofDeck3E72 Methods of Conducting Strength Tests of Panels forBuilding Construction42.2 Federal Standard:4900.1 Rev-1 U.S. Dept
8、. of Housing and Urban Develop-ment Minimum Property Standards, One and Two FamilyDwellings53. Terminology3.1 For definitions of terms used in this specification, seeTerminology C 168 and Definitions D 1554.3.2 Definitions of Terms Specific to This Standard:3.2.1 cellulosic fiber insulating boarda f
9、ibrous-felted,homogeneous panel made from ligno-cellulosic fibers (usuallywood or cane) and having a density of less than 31 lb/ft3(497kg/m3) but more than 10 lb/ft3(160 kg/m3).3.2.1.1 DiscussionCellulosic fiber insulating board ischaracterized by an integral bond which is produced byinterfelting of
10、 the fibers, but which has not been consolidatedunder heat and pressure as a separate stage in manufacture.Other materials may be added during manufacture to improvecertain properties.4. Classification4.1 Insulating board covered by this specification consists ofsix types:4.1.1 Type ISound deadening
11、 board, for use in wallassemblies to control sound transmissions.4.1.2 Type IIRoof insulation board, for use in variousroofing systems.4.1.2.1 Grade 1Primarily for use under built up roofsystems.4.1.2.2 Grade 2Primarily for use under single-ply roofingsystems.4.1.3 Type IIICeiling tiles and panels.4
12、.1.3.1 Grade 1Nonacoustical, for use as decorative walland ceiling coverings.4.1.3.2 Grade 2Acoustical, for use as decorative, soundabsorbing wall and ceiling coverings.4.1.4 Type IVWall Sheathing.4.1.4.1 Grade 1Regular, for use as wall sheathing inframe construction.4.1.4.2 Grade 2Structural, for u
13、se as wall sheathing inframe construction. When installed in accordance with Practice1This specification is under the jurisdiction of ASTM Committee C-16 onThermal Insulation and is the direct responsibility of Subcommittee C16.22 onOrganic and Nonhomogeneous Inorganic Thermal Insulations.Current ed
14、ition approved Feb. 15, 1995. Published April 1995. Originallypublished as C 208 46 T. Last previous edition C 208 94.2Annual Book of ASTM Standards, Vol 04.06.3Annual Book of ASTM Standards, Vol 04.10.4Annual Book of ASTM Standards, Vol 04.11.5Available from the U.S. Department of Housing and Urban
15、 Development,Construction Standards Division, HUD Building, Washington, DC 20410.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.C 846, structural wall sheathing provides adequate rackingresistance for use as exterior wall bracing.4.
16、1.5 Type VBacker board, for use behind exterior finishin wall assemblies where there are no structural requirements.4.1.6 Type VIRoof deck, for use as roof decking for flat,pitched, or shed-type, open-beamed, ceiling-roof construction.4.2 On occasion these products are used for other applica-tions.
17、The manufacturer and the purchaser shall agree upon anyspecial requirements for such end uses.5. Materials and Manufacture5.1 Cellulosic fiber insulating board shall be manufacturedfrom refined or partially refined ligno-cellulosic (wood or cane)fibers, by a felting or molding process, into homogene
18、ouspanels. Other ingredients may be added to provide or improvecertain properties such as strength and water resistance, inaddition to surface finishes for decorative products and specialcoatings which impart resistance to flame spread. The materialis subjected to such drying temperatures as to effe
19、ct completedestruction of rot producing fungi.5.2 The finished board may be either single or multiple ply.When multiple-ply boards are supplied, a suitable moisture-resistant adhesive shall be used to join the plies.6. Physical Properties6.1 The insulating board shall conform to the physicalproperti
20、es in Table 1.6.2 Roof products with a thickness of 112 in., 212 in., orgreater, are post-laminated using thinner board stock whoseproperties are covered in Table 1.7. Dimensions, Mass, and Permissible Variations7.1 The materials covered by this specification are availablein the sizes shown in Table
21、 2.7.2 Length and Width TolerancesUnless otherwise speci-fied, the tolerance for length and width of any size panel shallby+0,116 in. per ft ( + 0, 5.2 mm/m), but the totaltolerance in any dimension shall not exceed + 0, 38 in. ( + 0mm, 10 mm).7.3 Thickness ToleranceThe thickness tolerances areshown
22、 in Table 3.8. Workmanship, Finish, and Appearance8.1 DefectsThe insulating board shall have no defects thatwill adversely affect its service qualities. The surface shall befree of cracks, lumps, excessive departure from planeness, orother defects that affect performance or appearance.8.2 Surface Fi
23、nishThe surface finishes of the board shallbe as specified in Table 2.8.3 Edge DetailsThe edge details of the board shall be asspecified in Table 2.9. Sampling9.1 Unless otherwise specified in the purchase order orcontract, the material shall be sampled in accordance withCriteria C 390.10. Test Meth
24、ods10.1 Unless otherwise specified in Table 1, determine theproperties enumerated in this specification in accordance withTest Methods C 209.11. Inspection and Resubmittal11.1 The following requirements are generally employed forpurposes of acceptance sampling of lots or shipments ofqualified materi
25、al:11.1.1 Surface finish,11.1.2 Edge detail,11.1.3 Dimensional tolerances, and11.1.4 Workmanship.11.2 When agreed upon between the purchaser and themanufacturer or supplier, the inspection of the material shall bemade at either the point of shipment or point of delivery.11.3 In case of rejection, th
26、e manufacturer or supplier shallhave the right to reinspect the rejected shipment and resubmitthe lot after removal of the portion of the shipment notconforming to the specified requirements.12. Product Marking12.1 When specified, each panel or unit shall be labeledwith the manufacturers name or tra
27、demark, the designation ofthis specification, and type and grade. The label may alsoinclude the mark of a third party certification organization.13. Keywords13.1 backer board; ceiling tiles and panels; cellulosic fiberinsulating board; decorative insulating board; fiberboard; roofdeck; roof insulati
28、on board; sound deadening board; thermalinsulation; wall sheathingC 208 95 (2001)2TABLE1PhysicalPropertyRequirementsforCellulosicFiberInsulatingBoardPhysicalRequirementsSoundDeadeningBoard12in.(13mm)thickRoofInsulationBoardCeilingTilesandPanels(BothGrades)A12in.(13mm)916in.(14mm)58in.(16mm)WallSheat
29、hingBackerBoard 716in.(11mm)38in.(9mm)thickRoof Deck112in.(38mm)2in.(51mm)3in.(76mm)thickGrade1Grade2RegularStructural716in.(11mm)thick12in.(13mm)thick1in.(25mm)thick2in.(51mm)thick12in.(13mm)thick1in.(25mm)thick2in.(51mm)thick12in.(13mm)thick12in.(13mm)thick2532in.(20mm)thickThermalconductivity(k),
30、max,0.380.380.380.380.380.400.400.400.380.400.440.400.400.40Btuin./hft2F(W/mK)atmeantemperatureof7565F(2463C)(0.055)(0.055)(0.055)(0.055)(0.055)(0.058)(0.058)(0.058)(0.055)(0.058)(0.063)(0.058)(0.058)(0.058)Transversestrengtheitherdirection,min,lbf(N)12(53.4)7(31.1)7(31.1)14(62.3)28(124.6)12(53.4)24
31、(107)36(160)10(44.5)14(62.3)20(89.0)B25(111.2)6(27).Tensilestrengthparalleltosurface,min,lbf/in.2(kPa)C150(1034)50(345)50(345)50(345).150(1034)150(1034).150(1034)150(1034)200(1379)150(1034)150(1034).Tensilestrengthperpendiculartosurface,min,lbf/ft2(kPa)600(28.7)500(23.9)500(23.9)500(23.9)500(23.9)60
32、0(28.7)600(28.7)600(28.7)600(28.7)600(28.7)800(38.3)600(28.7)600(28.7)600(28.7)Waterabsorptionbyvolume,max,%710101010777.7D7710Linearexpansion,5090%RH,max,%0.50.50.50.50.50.50.50.50.50.50.60.50.50.5FlameSpreadIndex,finishsurface,max.200.200Vaporpermeance,grains/hft2in.Hgpressuredifferential,(mg/sm2k
33、Pa)min5(0.287).5(0.287)5(0.287)5(0.287)5(0.287)EModulusofrupture,min,lbf/in.2(kPa)240(1655)140(965)140(965)80(552)40(276)275(1896)140(965)70(483).275(1896)400(2758)B200(1379)200(1379)FDeflectionatspecifiedminload,max,in.(mm)0.85(22)1.25(32)1.25(32)0.62(16)0.31(8)0.75(19)0.42(11)0.21(5).0.75(19)0.75(
34、19)0.56(14)1.18(30).ModulusofElasticity,min,lbf/in.23103(mPa)G.40(276)DeflectionSpanRatio,maxG.1/240Moisturecontentbyweight,max,%1010101010101010101010101010APhysicalpropertieslistedinthiscolumn,exceptflamespreadindex,applytothebasematerialbeforepunching,drilling,perforating,orembossing.BThe20-lb(89
35、.0-N)transverseloadandthemodulusofrupturerequirementsarenotrequiredforwallsheathingapplicationswherethemanufacturercertifiesproofthathisproductwillmeetthespecifiedrackingrequirementswhenruninaccordancewithMethodsE72,inconjunctionwithAppendixDoftheHUDMinimumPropertyStandards,4900.1REV-1.Inaddition,th
36、eproductisappliedverticallyandfastened6in.(152mm)aparttointermediateframingand3in.(76mm)apartaroundtheedgesofthesheets.Rackingstrengthsof5200lb(23.2kN)dryand4000lb(17.8kN)wetarerequired.Asanalternative,buildingcoderequirementsmaybespecified.CTensilestrengthrequirementsshallbeapplicableonlyonthicknes
37、sesuptoandincluding1in.(25mm).DWaterabsorptionfor12in.structuralwallsheathingisdeterminedbythe24-htestinaccordancewithTestMethodsD1037using15%asthemaximum.Waterabsorptionforallotherproductsisdeterminedbythe2-htestinaccordancewithTestMethodsC209.EForroofdeckproductswithavaporretarder,themaximumshould
38、be0.5(0.029).Forroofdeckproductsmanufacturedwithoutavaporretarder,thereisnorequirementforpermeance.FForroofdecking,MORisdeterminedusingMethodsD2164.Matchedsamplesaretobetestedbeforeandafteracceleratedaging.MinimumMORforunagedsamplesshallbe225lbf/in.2(155kPa).Foragedsamples,theminimumshallbenolesstha
39、n50%oftheunagedtestresult.GUsingMethodsD2164.C 208 95 (2001)3ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such p
40、atent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited e
41、ither for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fai
42、r hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this sta
43、ndard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 2 Nominal Dimensions of Cellulosic Fiber Insulating BoardNominal DimensionsSurface Finish Edge DetailsWidthin. (mm
44、)Lengthin. (mm)Thicknessin. (mm)Sound Deadening Board 48 (1219)48 (1219)96 (2438)108 (2743)12 (13)12 (13)naturalAsquareRoof Insulation 23 (584) 47 (1194)12 (13), 1 (25), 112 (38)2 (51), 212 (64), 3 (76)naturalAor factory surfaceBsquare, offset, or shiplappedGrade 1 and Grade 2 24 (610) 48 (1219)12 (
45、13), 1 (25), 112 (38)2 (51), 212 (64), 3 (76)48 (1219) 48 (1219)716 (11),12 (13), 1 (25),112 (38), 2 (51), 212 (64),3 (76)48 (1219) 96 (2438)716 (11),12 (13), 1 (25),112 (38), 2 (51), 212 (64),3 (76)Ceiling Tiles and PanelsNonAcoustical12 (305)12 (305)16 (406)16 (406)12 (305)24 (610)16 (406)32 (813)
46、12 (13),916 (14),58 (16)12 (13),916 (14),58 (16)12 (13),916 (14),58 (16)12 (13),916 (14),58 (16)exposed face and bevelsfactory surface (smooth ortextured)all edges fabricatedCCeiling Tiles and PanelsAcoustical12 (305)12 (305)12 (305)24 (610)12 (13),916 (14),58 (16)12 (13),916 (14),58 (16)Wall Sheath
47、ingRegular 48 (1219)48 (1219)96 (2438)108 (2743)12 (13)12 (13)Wall SheathingStructural 48 (1219)48 (1219)96 (2438)108 (2743)12 (13),2532 (20)12 (13),2532 (20)Backer Board 48 (1219)48 (1219)96 (2438)108 (2743)38 (10),716 (11)38 (10),716 (11)Roof Deck 24 (610) 96 (2438) 112 (38)2 (51)3 (76)exposed fac
48、e and bevelsfactory surface (smooth ortextured)long edges fabricated, endssquare or fabricatedAThe term natural in connection with surface finishes refers to the surface as produced by the basic manufacturing process of felting or forming, without the inclusionof special ingredients intended to enha
49、nce the surface appearance or of any subsequent processing or retouching of the surfaces.BThe term factory surface refers to a special processing or additional steps in the manufacturing process, which is intended to provide one surface of the board withspecial features of appearance, texture, or functional performance, which would not be provided by the natural surface.CThe term edge fabricated refers to any type of edge treatment, o
