ASTM_D_7119_-_D_7119M_-_21.pdf

Designation:D7119/D7119M21Standard Guide forSampling Spray Polyurethane Foam and Coating inRoofing1This standard is issued under the fixed designation D7119/D7119M;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 guide covers the removal of test specimens fromspray polyurethane foam(SPF)roofing systems in the field forthe purpose of examination of an existing system and/or qualityassurance for new installations.It describes the types andpurposes of sample cuts,visual inspection techniques,labora-tory physical property tests,and repair of the core and slitsample holes.1.2 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 standard1.3 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.1.4 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:2C1029 Specification for Spray-Applied Rigid Cellular Poly-urethane Thermal InsulationD1079 Terminology Relating to Roofing and WaterproofingD1621 Test Method for Compressive Properties of RigidCellular PlasticsD1622 Test Method for Apparent Density of Rigid CellularPlasticsD4442 Test Methods for Direct Moisture Content Measure-ment of Wood and Wood-Based MaterialsD6705/D6705M Guide for Repair and Recoat of SprayPolyurethane Foam Roofing SystemsD7425/D7425M Specification for Spray Polyurethane FoamUsed for Roofing Applications3.Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nology D1079.3.2 Definitions of Terms Specific to This Standard:3.2.1 core samples,ncylindrical sections of approxi-mately 50 to 75 mm 2 to 3 in.in diameter.They shall be cutusing a round metal template or coring tool,and they shallextend from surface down to but not through the substrate.3.2.2 slit samples,nprism-shaped samples approximately13 mm 12in.wide,19 mm 34in.deep,and 50 to 75 mm 2to 3 in.long,cut with a sharp knife.Slit samples are used toexamine the uppermost polyurethane foam layers and thecoating system.3.3 lift,nan individual layer of polyurethane foam thatresults from a single pass of the spray gun.4.Significance and Use4.1 Adequate coating thickness(mil thickness)is necessaryto protect polyurethane foam from the effects of ultravioletdegradation.This guide outlines general procedures for sam-pling and measuring the coating thickness by using slit or coresamples.4.2 Thickness of individual lifts of sprayed foam will havea bearing upon foam stability.Core samples are used todetermine foam thickness.Compressive strength and coredensity affect resistance to foot traffic and impact.Specimensfrom core samples are used to determine these properties usingTest Methods D1621 and D1622.Visual examinations of corespecimens also indicate the quality of adhesion of the coatingand the foam between foam lifts and between foam andsubstrate.1This guide is under the jurisdiction of ASTM Committee D08 on Roofing andWaterproofing and is the direct responsibility of Subcommittee D08.06 on SprayPolyurethane Foam Roof Systems.Current edition approved Jan.1,2021.Published February 2021.Originallyapproved in 2007.Last previous edition approved in 2013 as D7119/D7119M 13a.DOI:10.1520/D7119_D7119M-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(TBT)Committee.14.3 Slit samples are used to visually examine the foams cellstructure,the number of coating layers applied,dry filmthickness of the coating,and coating adhesion.5.Sampling for Quality Assurance of RecentlyCompleted Sprayed Pol