ASTM_D_6298_-_D_6298M_-_16.pdf

Designation:D6298/D6298M16Standard Specification forFiberglass Reinforced Styrene-Butadiene-Styrene(SBS)Modified Bituminous Sheets with a Factory Applied MetalSurface1This standard is issued under the fixed designation D6298/D6298M;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 fiberglass reinforced modifiedbituminous sheet materials that use styrene-butadiene-styrene(SBS)thermoplastic elastomer as the primary modifier and aresurfaced with a factory applied continuous metal foil.Thesematerials are intended for use in the fabrication of multiple plyroofing and waterproofing membranes and flashings.1.2 This specification is intended as a material specificationonly.Questions regarding the suitability of the specific roofconstructions or application techniques are beyond the scope ofthis specification.1.3 The specified tests and property limits are intended toestablish minimum properties.In place roof system designcriteria such as fire resistance,field strength,impact/punctureresistance,material compatibility,uplift resistance,and others,are factors beyond the scope of this specification.1.4 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.1.5 The following precautionary statement pertains to thetest method portion only,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 and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:2D1079 Terminology Relating to Roofing and WaterproofingD5147/D5147M Test Methods for Sampling and TestingModified Bituminous Sheet MaterialD7051 Test Method for Cyclic Thermal Shock of SBS-Modified Bituminous Roofing Sheets with Factory-Applied Metal Surface3.Terminology3.1 DefinitionsFor definitions of terms used in thisspecification,refer to Terminology D1079.4.Materials and Manufacture4.1 In the process of manufacture,the fiberglass reinforce-ment is impregnated and coated on both sides with a SBSmodified bituminous coating.The sheet is surfaced with acontinuous metal foil except for any selvage.The SBS modi-fied bituminous coating shall be permitted to be compoundedwith a mineral stabilizer.4.2 The metal surfacing shall be omitted on any selvage.Toprevent sticking in the roll,the reverse side and any selvageshall be permitted to be covered with a fine mineral surfacingor any other surfacing that will not interfere with adhesion orbonding of the lap during application.4.3 Foil-faced products intended for use where the applica-tion is to be by heat welding(torching)shall meet the minimumback surface coating requirement found in Table 1.5.Physical Properties5.1 The sheet material shall conform to the physical prop-erties prescribed in Table 1.5.2 The finished product shall not crack nor be so sticky asto cause other material damage upon being unrolled at producttemperatures between 4 and 60C 40 and 140F.1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee D08.04on Felts,Fabrics and Bituminous Sheet Materials.Current edition approved Nov.1,2016.Published November 2016.Originallyapproved in 1998.Last previous edition approved in 2013 as D6298 13.DOI:10.1520/D6298_D2698M-16.2For 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 States1 6.Dimensions,Mass,and Permissible Variations6.1 The width of the roll shall be as agreed between thepurchaser and the seller and shall not vary more than 61%.6.2 The area of the roll shall not be less than as agreed uponbetween the purchaser and seller.6.3 The selvage width shall be within 66.4 mm 14in.ofthe nominal value and shall not be less than 57 mm 2.25 in.7.Workmanship,Finish,and Appearance7.1 The finished product shall be completely coated in acontinuous,unbroken film and shall be free of such defects asholes,ragged or untrue edges,breaks,cracks,tears,protrusions,delaminations,and indentations.7.2 The metal surface shall be uniform in surface andtexture,that is,free from such defects as holes,breaks tears,protrusions,and