ASTM_D_7053_-_D_7053M_-_11.pdf

Designation:D7053/D7053M11Standard Guide forDetermining and Evaluating Causes of Water Leakage ofLow-Sloped Roofs1This standard is issued under the fixed designation D7053/D7053M;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 describes methods for determining andevaluating causes of water leakage in low-sloped roofs.Forthis purpose,water penetration is considered leakage andtherefore problematic,is causing or is likely to cause prematuredeterioration of the roof,building or its contents,or isadversely affecting the performance of other components of thebuilding A roof is considered an assembly including themembrane,insulation,vapor retarder(if required),deck,andstructural components.1.1.1 This guide excludes moisture-related problems inroofs caused by condensation.NOTE1CondensationMoisture-related problems in roof systemsmay be caused by condensation of humid air originating from within thebuilding and be incorrectly attributed to leakage from rain water.Theprotocol for an investigation of dampness due to condensation and iscomplicated,requires special expertise,and is beyond the scope of thisguide.For information regarding condensation problems as they relate toroofs,refer to ASTM MNL 18,2ASTM MNL 40,3and ASHRAEHandbook 2005 Fundamentals.41.2 Investigative techniques discussed in this guide may beintrusive,disruptive,or destructive.It is the responsibility ofthe investigator to establish the limitations of use,to anticipateand advise of the destructive nature of some procedures,and toplan for repairing and selective reconstruction as necessary.1.3 This guide does not address steep-sloped roofs,standingor flat seam metal roofs,or architectural standing seam metalroofs.1.4 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 non-conformancewith the standard.2.Referenced Documents2.1 ASTM Standards:5C1153 Practice for Location of Wet Insulation in RoofingSystems Using Infrared ImagingD1079 Terminology Relating to Roofing and WaterproofingD7186 Practice for Quality Assurance Observation of RoofConstruction and Repair3.Terminology3.1 Refer to Terminology D1079.3.2 Definitions of Terms Specific to This Standard:3.2.1 condensationthe conversion of water vapor to liquidas the temperature drops or atmospheric pressure rises.3.2.2 water leakagewater that passes through a materialor between materials in a roof system and reaches a space thatis not directly or intentionally exposed to the water source.4.Significance and Use4.1 This guide is intended to provide building professionalswith a methodology for evaluating water leakage throughlow-sloped roofs.It addresses the service history of a roof,thevarious components of a roof,and the interaction betweenthese components and adjacent construction.It is not intendedas a construction quality control procedure,as specified inPractice D7186,nor as a preconstruction qualification proce-dure.It is intended for evaluating water leakage through alow-sloped roof.4.1.1 QualificationsUse of this guide requires a back-ground as an architect,engineer,roof/waterproofing consultant,roofing contractor,or related profession with an understandingin building construction and the expertise in the design,installation,and maintenance of low-sloped roofs.1This guide is under the jurisdiction of ASTM Committee D08 on Roofing andWaterproofing and is the direct responsibility of Subcommittee D08.20 on RoofingMembrane Systems.Current edition approved May 1,2011.Published June 2011.Originallyapproved in 2007.Last previous version approved in 2007 as D7053 07.DOI:10.1520/D7053_D7053M-11.2Treschel,H.R.,ed.,Manual on Moisture Control in Buildings,MNL18,ASTMInternational,1994.3Treschel,H.R.,ed.,Moisture Analysis and Condensation Control in BuildingEnvelopes,MNL 40,ASTM International,2003.4ASHRAE Handbook 2005 Fundamentals,available from American Society ofHeating,Refrigerating,and Air-Conditioning Engineers,Inc.(ASHRAE),1791Tullie Circle,NE,Atlanta,GA 30329,http:/www.ashrae.org.5For 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 States1 4.1.2 ApplicationThe sequential activities describedherein are intended to produce an evaluation program,but allactivities may not be applicable or necessary for a particularevaluation program.It is the responsib