1、Designation:D4434/D4434M12Standard 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
2、 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 Department of Defense.1.Scope1.1 This specification covers flexible sheet made frompoly(vinyl chl
3、oride)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 pu
4、rpose.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 regar
5、ded 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.1.4 This standard may involve hazardous materials,opera-tions,and
6、equipment.This standard does not purport toaddress all of the safety concerns,if any,associated with itsuse.It is the responsibility of the user of this standard toestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitation prior to use.2.Referenced Do
7、cuments2.1 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
8、Thermoplastic Sheeting or Film at ElevatedTemperatureD2136 Test Method for Coated FabricsLow-TemperatureBend TestD3045 Practice for Heat Aging of Plastics Without LoadD5602 Test Method for Static Puncture Resistance of Roof-ing Membrane SpecimensD5635 Test Method for Dynamic Puncture Resistance ofRo
9、ofing 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 LightApparatus forUV Exposure of Non
10、metallic 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-te
11、ristics 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 w
12、ith 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,pig-ments,a
13、nd other ingredients to satisfy the physical propertyrequirements and accelerated durability tests.4.2 To make seams and repairs,the sheet shall be capable ofbeing bonded watertight to itself during the design service lifeof the sheets.The manufacturer shall recommend a suitable1This specification i
14、s 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 July 15,2012.Published August 2012.Originallyapproved in 1985.Last previous edition approved in 2011 as D
15、4434/D4434M 11.DOI:10.1520/D4434_D4434M-12.2For 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 Internat
16、ional,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 method.Design service life is defined as the designated timeperiod of intended system performance.5.Physical Requirements5.1 The sheet shall conform to the physical requirementsprescribed in Table 1.5.2 The tolerance for time conditions(aging,weathering,and so forth)is 615 min or 61%of the period,whichever isgreater,unless otherwise specified.5.3 The tolerance for temperature conditions(aging,weath-ering,and s