ASTM_D_6221_-_D_6221M_-_00_2021.pdf

Designation:D6221/D6221M00(Reapproved 2021)Standard Specification forReinforced Bituminous Flashing Sheets for Roofing andWaterproofing1This standard is issued under the fixed designation D6221/D6221M;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 factory-prepared reinforcedbituminous sheet used in flashing.The bitumen used may beasphalt,coal-tar pitch,or polymer-modified bitumen.Thereinforcement may include any one or a combination oforganic(wood fiber),polyester,or glass fiber felts,wovenfabrics,or thermoplastic films.Fine mineral powders,granules,or metal foils may be used as surfacing.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 nonconformancewith the standard.1.3 The following precautionary statement pertains only tothe test method portion,Section 7,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 limitations 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:2D228/D228M Test Methods for Sampling,Testing,andAnalysis of Asphalt Roll Roofing,Cap Sheets,andShingles Used in Roofing and WaterproofingD751 Test Methods for Coated FabricsD1079 Terminology Relating to Roofing and WaterproofingD2523/D2523M Practice for Testing Load-Strain Propertiesof Roofing MembranesD3746/D3746M Test Method for Impact Resistance of Bi-tuminous Roofing SystemsD5601 Test Method for Tearing Resistance of Roofing andWaterproofing Materials and Membranes(Withdrawn2002)3D5683/D5683M Test Method for Flexibility of Roofing andWaterproofing Materials and MembranesD5869/D5869M Practice for Dark Oven Heat Exposure ofRoofing and Waterproofing Materials3.Terminology3.1 Definitions:3.1.1 See Terminology D1079 for terms relating to roofingor waterproofing.4.Classification4.1 Type 1Heavy,thick flashing sheets.4.2 Type 2Lightweight,thin flashing sheets5.Significance and Use5.1 The criteria listed in this specification are based onround robin testing of materials that,if correctly installed,canbe used as the primary material for flashing membranes.Themanufacturers installation recommendations must be followedin every case.5.2 Compliance with the criteria in this specification isbelieved to be necessary for satisfactory performance,but thelinkage has not been established between performance andthese criteria.6.Physical Properties6.1 Conform to criteria in Table 1.1This 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.15,2021.Published November 2021.Originallyapproved in 1998.Last previous edition approved in 2014 as D6221/D6221M 00(2014)1.DOI:10.1520/D6221_D6221M-00R21.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.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?6.2 The mean mass,thickness,load at break,and elongationat break shall not change more than 10%from the expectedvariance after heat conditioning.7.Sampling and Test Methods7.1 Comply with Test Methods D228/D228M for sampling.7.2 Use the following test methods to test the samples:7.2.1 MassSee Test Methods D228/D228M.7.2.2 ThicknessSee Test Methods D751.7.2.3 Load-StrainPropertiesSeePracticeD2523/D2523M except as noted herein:test five 25 by 150 mm 1 by6 in.strips in both the length and width of the roll,using a100 mm 4 in.jaw gap,a