Designation:D6694/D6694M−15StandardSpecificationforLiquid-AppliedSiliconeCoatingUsedinSprayPolyurethaneFoamRoofingSystems1ThisstandardisissuedunderthefixeddesignationD6694/D6694M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversaliquid-appliedsolventdis-persedelastomericcoatingusedasaroofingmembraneforspraypolyurethanefoam(SPF)insulationwhoseprincipalpolymerinthedispersioncontainsmorethan95%silicone.1.2Thisspecificationdoesnotprovideguidanceforappli-cation.1.3Thefollowingprecautionarycaveatpertainsonlytothetestmethodportions,Sections5and6.1.4ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.5Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeter-minetheapplicabilityofregulatoryrequirementspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D16TerminologyforPaint,RelatedCoatings,Materials,andApplicationsD522TestMethodsforMandrelBendTestofAttachedOrganicCoatingsD624TestMethodforTearStrengthofConventionalVul-canizedRubberandThermoplasticElastomersD903TestMethodforPeelorStrippingStrengthofAdhe-siveBondsD1079TerminologyRelatingtoRoofingandWaterproofingD1644TestMethodsforNonvolatileContentofVarnishesD2196TestMethodsforRheologicalPropertiesofNon-NewtonianMaterialsbyRotationalViscometerD2370TestMethodforTensilePropertiesofOrganicCoat-ingsD2697TestMethodforVolumeNonvolatileMatterinClearorPigmentedCoatingsD4798PracticeforAcceleratedWea...
