Designation:D7053/D7053M−11StandardGuideforDeterminingandEvaluatingCausesofWaterLeakageofLow-SlopedRoofs1ThisstandardisissuedunderthefixeddesignationD7053/D7053M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidedescribesmethodsfordeterminingandevaluatingcausesofwaterleakageinlow-slopedroofs.Forthispurpose,waterpenetrationisconsideredleakageandthereforeproblematic,iscausingorislikelytocauseprematuredeteriorationoftheroof,buildingoritscontents,orisadverselyaffectingtheperformanceofothercomponentsofthebuildingAroofisconsideredanassemblyincludingthemembrane,insulation,vaporretarder(ifrequired),deck,andstructuralcomponents.1.1.1Thisguideexcludesmoisture-relatedproblemsinroofscausedbycondensation.NOTE1—Condensation—Moisture-relatedproblemsinroofsystemsmaybecausedbycondensationofhumidairoriginatingfromwithinthebuildingandbeincorrectlyattributedtoleakagefromrainwater.Theprotocolforaninvestigationofdampnessduetocondensationandiscomplicated,requiresspecialexpertise,andisbeyondthescopeofthisguide.Forinformationregardingcondensationproblemsastheyrelatetoroofs,refertoASTMMNL18,2ASTMMNL40,3andASHRAEHandbook2005Fundamentals.41.2Investigativetechniquesdiscussedinthisguidemaybeintrusive,disruptive,ordestructive.Itistheresponsibilityoftheinvestigatortoestablishthelimitationsofuse,toanticipateandadviseofthedestructivenatureofsomeprocedures,andtoplanforrepairingandselectivereconstructionasnecessary.1.3Thisguidedoesnotaddresssteep-slopedroofs,standingorflatseammetalroofs,orarchitecturalstandingseammetalroofs.1.4ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewit...
