ASTM_D_7425_-_D_7425M_-_13_2019.pdf

Designation:D7425/D7425M13(Reapproved 2019)Standard Specification forSpray Polyurethane Foam Used for Roofing Applications1This standard is issued under the fixed designation D7425/D7425M;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 the types and physical proper-ties of spray polyurethane foam(SPF)for use in SPF roofingapplications.1.2 This specification does not provide guidance for appli-cation.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:2C165 Test Method for Measuring Compressive Properties ofThermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC1363 Test Method for Thermal Performance of BuildingMaterials and Envelope Assemblies by Means of a HotBox ApparatusD1079 Terminology Relating to Roofing and WaterproofingD1621 Test Method for Compressive Properties of RigidCellular PlasticsD1622/D1622M Test Method for Apparent Density of RigidCellular PlasticsD1623 Test Method for Tensile and Tensile Adhesion Prop-erties of Rigid Cellular PlasticsD2126 Test Method for Response of Rigid Cellular Plasticsto Thermal and Humid AgingD2842 Test Method for Water Absorption of Rigid CellularPlasticsD6226 Test Method for Open Cell Content of Rigid CellularPlasticsE96/E96M Test Methods for Water Vapor Transmission ofMaterials3.Terminology3.1 DefinitionsFor definitions of terms used in thisspecification,refer to Terminologies D1079 and C168.3.1.1 knit linealso called lift line.They are interchange-able terms describing the adhesion plane where one pass issprayed over another.4.Significance and Use4.1 This specification covers spray polyurethane foam(SPF)that is used as part of a SPF roofing system.5.Classification5.1 This specification covers SPF currently commerciallyavailable as described by the physical property requirements inTable 1.6.Ordering Information6.1 Orders for materials purchased under this specificationshall include the following:6.1.1 ASTM designation,year of issue,and title.6.1.2 Type.6.1.3 Sampling,if different(see Section 9).6.1.4 If packaging is other than specified(see 13.1).6.1.5 If marking is other than specified(see 13.4).1This specification is under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and is the direct responsibility of Subcommittee D08.06on Spray Polyurethane Foam Roof Systems.Current edition approved Dec.15,2019.Published December 2019.Originallyapproved in 2008.Last previous edition approved in 2013 as D7425/D7425M 13.DOI:10.1520/D7425_D7425M-13R19.2For 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(TBT)Committee.1 7.Materials and Manufacture7.1 SPF is produced by the catalyzed polymerization ofpolyisocyanates in the presence of polyhydroxyl compounds,with the addition of other compounds such as stabilizers andblowing agents.7.2 The materials shall be capable of being mixed andapplied using commercially available polyurethane sprayequipment.8.Physical Requirements8.1 SPF used in roofing applications shall meet the mini-mum physical property values as sho