1、Designation:D744518An American National StandardStandard Specification forRigid Poly(Vinyl Chloride)(PVC)Siding with Foam PlasticBacking(Backed Vinyl Siding)1This standard is issued under the fixed designation D7445;the number immediately following the designation indicates the year oforiginal adopt
2、ion or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification establishes requirements for vinylsiding with integral foam
3、plastic backing,where the siding ismanufactured from rigid PVC compound.Performance re-quirements and test methods addressed by this standard includematerials properties and dimensions,warp,shrinkage,impactstrength,expansion,appearance,and wind load resistance.Methods of indicating compliance with t
4、his specification arealso provided.NOTE1Backed vinyl siding is composed of two major components:the siding and the backing.It is intended that the siding portion complywith Specification D3679.Applicable portions of Specification D3679 areincluded in this specification.Additional requirements that p
5、ertain only tothe backing as a separate material,or to the combination of siding andbacking as a whole,are also included.1.2 Backed vinyl siding shall be tested with the backingmaterial in place or removed,as specified in the applicablerequirement or test method.1.3 The use of PVC recycled plastic i
6、n this product shall bein accordance with the requirements in Section 4.1.4 Siding produced to this specification shall be installed inaccordance with Practice D4756.Reference shall also be madeto the manufacturers installation instructions for the specificproduct to be installed.NOTE2Information wi
7、th regard to siding maintenance shall beobtained from the manufacturer.1.5 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.6 This standa
8、rd 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 and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE3There is no known ISO equiva
9、lent to this standard.1.7 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
10、 TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD635 Test Method for Rate of Burning and/or Extent andTime of Burning of Plastics in a Horizontal PositionD696 Test Method for Coefficient of Linear Thermal Expan-si
11、on of Plastics Between 30C and 30C with a VitreousSilica DilatometerD883 Terminology Relating to PlasticsD1042 Test Method for Linear Dimensional Changes ofPlastics Caused by Exposure to Heat and MoistureD1435 Practice for Outdoor Weathering of PlasticsD1600 Terminology forAbbreviated Terms Relating
12、 to Plas-ticsD2244 Practice for Calculation of Color Tolerances andColor Differences from Instrumentally Measured ColorCoordinatesD2457 Test Method for Specular Gloss of Plastic Films andSolid PlasticsD3679 Specification for Rigid Poly(Vinyl Chloride)(PVC)SidingD3892 Practice for Packaging/Packing o
13、f PlasticsD4226 Test Methods for Impact Resistance of Rigid Poly-(Vinyl Chloride)(PVC)Building ProductsD4756 Practice for Installation of Rigid Poly(Vinyl Chlo-ride)(PVC)Siding and SoffitD5206 Test Method for Windload Resistance of Rigid Plas-tic SidingD5947 Test Methods for Physical Dimensions of S
14、olidPlastics Specimens1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.24 on Plastic BuildingProducts.Current edition approved Jan.1,2018.Published February 2018.Originallyapproved in 1979.Last previous edition approv
15、ed in 2017 as D7445 17.DOI:10.1520/D7445-18.2For 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.*A Summary of Changes
16、section appears at the end of this standardCopyright 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 D7209 Guide for Waste Reduction,R