1、Designation:D7119/D7119M13aStandard 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 rev
2、ision.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 exam
3、ination 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 t
4、o 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.1.3 This standard does not purport to address all of the
5、safety 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:2C1029 Specification for Spray-Ap
6、plied 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-men
7、t of Wood and Wood-Base MaterialsD6705 Guide for Repair and Recoat of Spray PolyurethaneFoam Roofing Systems3.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
8、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,ncrescent-shaped samples approxi-mately 13 mm 12in.wide,19 mm 34in.deep,and 50 to 75mm 2 to 3 in.long,cut with a s
9、harp knife.Slit samples areused to examine the uppermost polyurethane foam layers andthe coating 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 polyure
10、thane 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
11、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,betwee
12、n foam lifts,and between foam andsubstrate.4.3 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 Polyurethane Roof Systems5.1 When
13、specified,samples shall be taken from the SPFroofing system for quality assurance.The sampling frequency1This 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 editi
14、on approved Aug.1,2013.Published August 2013.Originallyapproved in 2007.Last previous edition approved in 2013 as D7119 13.DOI:10.1520/D7119_D7119M13A.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandard
15、s 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 shall be according to 5.2 and 5.3 unless another samplingfrequency has been specified.5.2 Two core sample
16、s shall be taken from the first 900m210 000 ft2 of roof area and one for each additional 900 m210 000 ft2 or fraction thereof.5.3 When specified,six slit samples shall be taken for every900 m210 000 ft2.6.Sampling Existing Spray Polyurethane Roof Systems6.1 Core or slit samples,or both,shall be taken as needed toestablish the general condition of the spray polyurethane foamand coating.6.2 Core samples are used to determine adhesion,moisturecontent,and general conditions in order to determine whe
