ASTM_D_7425_-_D_7425M_-_13.pdf

Designation:D7425/D7425M13Standard 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 non-conformancewith 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 and health practices and determine the applica-bility of regulatory limitations prior to use.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 Test Method for Apparent Density of Rigid CellularPlasticsD1623 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).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.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 Aug.1,2013.Published August 2013.Originallyapproved in 2008.Last previous edition approved in 2011 as D7425 11.DOI:10.1520/D7425_D7425M-13.2For 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 States1 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 shown in Table 1.8.2 Other physical properties may be required,as agreedupon by the purchaser and the manufacturer.9.Sampling9.1 Sampling for inspection tests,if required,shall be forproperties agreed upon between the manufacturer and thepurchaser.10.Test Specimen Preparation10.1 Finished SPF test panels shall be made by sprayapplication consistent with the manufacturers recommenda-tions including temperatures of the liquid components,ambienttemperature,temperature and type of substrate,type andoperation settings of spray equipment,and thickness of SPFper pass.Unless otherwise specified and reported,the ambientand substrate temperature shall be 24 6 3C 75 6 5F andrelative humidi