Designation:C1589/C1589M−17bStandardPracticeforOutdoorWeatheringofConstructionSealsandSealants1ThisstandardisissuedunderthefixeddesignationC1589/C1589M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticedescribesoutdoorexposureprocedurestobeusedaspartofatestdesignedtodeterminetheweather-abilityofbuildingconstruction,sealsandsealants.NOTE1—SeePracticeG24forExposurestoDaylightFilteredThroughGlass.1.2Thispracticeincludesthreeproceduresforoutdoorweathering.ProcedureAexposesspecimenstooutdoorweath-eringwithoutmovement.ProcedureBandProcedureCare,respectively,continuousnaturalandperiodicmanualtech-niquesforsubjectingspecimenstothecombinationofcyclicmovementandexposuretooutdoorweathering.1.3Thispracticeislimitedtothemethodbywhichtheconstructionsealsorsealantsareexposedtooutdoorweather-ingaspartofatestprogram.Itreferstothetypesofevaluationstobeperformedfollowingtheoutdoorexposurebutdoesnotdescribethetestmethods.1.4Meansofevaluationoftheeffectsofweatheringwilldependontheintendeduseofthetestmaterial.1.5ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.7Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnica...
