ASTM_D_6757_-_D_6757M_-_18.pdf

Designation:D6757/D6757M18Standard Specification forUnderlayment Felt Containing Inorganic Fibers Used inSteep-Slope Roofing1This standard is issued under the fixed designation D6757/D6757M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers(1)inorganic fiber-reinforcedorganic felt underlayment and(2)inorganic fiber-based felt foruse as underlayment with steep-slope roofing products.Theintent of this specification is to provide criteria for producingand evaluating underlayments with a significantly reducedtendency to wrinkle before or after the installation of steeproofing products.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 The following safety hazards caveat pertains only to thetest method portion,Section 8,of this specification:Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety,health,andenvironmental practices and determine the applicability ofregulatory requirements prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D146/D146M Test Methods for Sampling and TestingBitumen-Saturated Felts and Woven Fabrics for Roofingand WaterproofingD228/D228M Test Methods for Sampling,Testing,andAnalysis of Asphalt Roll Roofing,Cap Sheets,andShingles Used in Roofing and WaterproofingD1079 Terminology Relating to Roofing and WaterproofingD4869/D4869M Specification for Asphalt-Saturated Or-ganic Felt Underlayment Used in Steep Slope RoofingF1087 Test Method for Linear Dimensional Stability of aGasket Material to Moisture3.Terminology3.1 DefinitionsFor definitions of terms used in thisspecification,refer to Terminology D1079.4.Classification4.1 Organic felts that are reinforced with inorganic fibers arecovered by this specification.4.2 Inorganic fiber-based asphaltic and nonasphaltic feltsare covered by this specification.5.Materials and Manufacture5.1 In the process of manufacture,a single thickness ofinorganic mat or organic felt that is reinforced with inorganicfibers shall be uniformly saturated or coated.6.Physical Requirements6.1 The material shall conform to the physical requirementsprescribed in Table 1.6.2 The finished product shall not crack nor be so sticky asto cause tearing or other damage upon being unrolled attemperatures between 1 and 60C 30 and 140F.Thefinished product shall pass the water shower exposure test inaccordance with 8.1.4,indicating resistance to liquid watertransmission.7.Dimensions,Masses,Workmanship,Finish,andAppearance7.1 Dimensions and masses to be agreed upon betweenbuyer and seller.7.2 The finished material shall be free of visible externaldefects,such as holes,ragged or untrue edges,breaks,cracks,tears,bulges,and indentations.1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee D08.02on Steep Roofing Products and Assemblies.Current edition approved May 1,2018.Published May 2018.Originallyapproved in 2002.Last previous edition approved in 2016 as D6757/D6757M 16a.DOI:10.1520/D6757_D6757M-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 8.Sampling and Test Methods8.1 Sample the material and determine the properties enu-merated in this specification in accordance with Test MethodsD146/D146M.8.1.1 Tear StrengthUse test method in accordance withTest Methods D228/D228M.8.1.1.1 Precision and BiasA precision and bias statementis to be determined.8.1.2 Pliability TestUse test method in Test MethodsD228/D228M.8.1.3 Behav