ASTM_D_4434_-_D_4434M_-_21.pdf

Designation:D4434/D4434M21Standard Specification forPoly(Vinyl Chloride)Sheet Roofing1This standard is issued under the fixed designation D4434/D4434M;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification covers flexible sheet made frompoly(vinyl chloride)resin as the primary polymer intended foruse in single-ply roofing membranes exposed to the weather.The sheet shall contain reinforcing fibers or reinforcing fabrics.1.2 The tests and property limits used to characterize thesheet are values intended to ensure minimum quality for theintended purpose.In-place roof system design criteria,such asfire resistance,material compatibility,wind uplift resistance,in-situ shrinkage,among others,are factors that must beconsidered but are beyond the scope of this specification.1.3 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.1.4 This standard 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 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:2D570 Test Method for Water Absorption of PlasticsD638 Test Method for Tensile Properties of PlasticsD751 Test Methods for Coated FabricsD1004 Test Method for Tear Resistance(Graves Tear)ofPlastic Film and SheetingD1204 Test Method for Linear Dimensional Changes ofNonrigid Thermoplastic Sheeting or Film at ElevatedTemperatureD2136 Test Method for Coated FabricsLow-TemperatureBend TestD3045 Practice for Heat Aging of Plastics Without LoadD5602/D5602M Test Method for Static Puncture Resistanceof Roofing Membrane SpecimensD5635/D5635M Test Method for Dynamic Puncture Resis-tance of Roofing Membrane SpecimensD7635/D7635M Test Method for Measurement of Thicknessof Coatings Over Fabric ReinforcementG151 Practice for Exposing Nonmetallic Materials inAccel-erated Test Devices that Use Laboratory Light SourcesG154 Practice for Operating Fluorescent Ultraviolet(UV)Lamp Apparatus for Exposure of Nonmetallic MaterialsG155 Practice for Operating Xenon Arc Light Apparatus forExposure of Non-Metallic Materials3.Classification3.1 Type IIReinforced sheet in which fibers are incorpo-rated into a production process,for example as a carrier,without appreciably affecting such physical property charac-teristics of the finished product as tensile strength or ultimateelongation,but may provide other desirable characteristics,such as dimensional stability.3.2 Type IIISheet that is internally reinforced with fabricand which may also have a fabric backing.3.3 Type IVSheet that is internally reinforced with fabricand which may also have a fabric backing with minimumthickness of 0.91 mm 0.036 in.4.Materials and Manufacture4.1 The sheet shall consist of poly(vinyl chloride)resin inamounts greater than 50%of the total polymer contentsuitably compounded with plasticizers,stabilizers,fillers,pigments,and other ingredients to satisfy the physical propertyrequirements and accelerated durability tests.1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee D08.18on Nonbituminous Organic Roof Coverings.Current edition approved Jan.1,2021.Published January 2021.Originallyapproved in 1985.Last previous edition approved in 2015 as D4434/D4434M 15.DOI:10.1520/D4434_D4434M-21.2For 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(TB