ASTM_D_6369_-_99.pdf

Designation:D 6369 99Standard Guide forDesign of Standard Flashing Details for EPDM RoofMembranes1This standard is issued under the fixed designation D 6369;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide covers the design of details for typicalconditions encountered in new ballasted,mechanically at-tached or fully adhered ethylene propylene diene terpolymer(EPDM)sheet roof systems.1.2 This guide illustrates general details for typical condi-tions that may be encountered on an EPDM sheet roofingsystem.The guide will assist the designer in preparing detailsfor each specific condition that may occur on a project.1.3 The values stated in SI units are to be regarded asstandard.The conventional units given in parentheses areprovided for information purposes only.1.4 This standard does not purport to address all of thesafety 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:D 1079 Terminology Relating to Roofing,Waterproofingand Bituminous Materials23.Terminology3.1 Definitions For definitions of terms used in this guideand not listed below,see Terminology D 1079.3.2 ballasted sheet roofing,na system which incorporatesa loose laid vulcanized EPDM sheet over an accepted substrateand is held in place with either stone ballast,pavers,or acombination thereof.3.3 fully adhered sheet roofing,na system which incor-porates a vulcanized EPDM sheet fully adhered over a securedand accepted substrate.3.4 mechanically attached sheet roofing,na system whichincorporates a mechanically fastened vulcanized EPDM sheetover a secured and accepted substrate.4.Significance and Use4.1 This guide illustrates general details for typical condi-tions that may be encountered on an EPDM sheet roofingsystem.4.2 This guide does not address all requirements associatedwith the installation of EPDM membrane flashing,such asmembrane cleaning and surface preparation,fastener spacing,adhesive application and other seaming requirements whichmay vary by membrane system supplier.4.3 Insulation,fastener types,protection mats,stone ballast,pavers,and requirements for perimeter attachment are notcovered by this guide.The designer shall review the projectrequirements and consult the membrane system supplier,build-ing insurer,and local building codes for specific requirements.5.Drawings5.1 This guide is not all-inclusive.The designer shall detailall typical and special conditions on the project.Particularattention shall be given to transitions in plane and intersectionof different details.The membrane system supplier or systemapplicator shall provide shop drawings of each condition toconfirm field conditions and to verify their understanding of thedesign intent.5.2 Insulation,protection mats,stone ballast and pavershave been omitted for clarity.5.3 Treated wood blocking shall be installed to provideattachment for accessory items such as gravel stops,metalsleeves,etc.6.Penetrations6.1 Flashing at penetrations shall accommodate differentialmovement between the deck and penetration(that is,pipe,conduit,column or drain).6.1.1 Where“H”or“I”column sections occur,installblocking between flanges to facilitate installation of flashing.Weld sloping steel hoods to column.Extend vertical leg ofhood a minimum 100 mm(4 in.)over flashing.6.1.2 Set cast iron drains with the top of the flange levelwith or slightly below the surrounding deck area.Wheninsulation is installed below the sheet membrane provide aminimum 900 by 900 mm(36 by 36 in.)transition sump.Donot run field or factory seams within 600 mm(24 in.)of drainflange edge.7.Expansion Joints7.1 Expansion joints are designed to permit independent1This guide is under the jurisdiction of ASTM Committee D08 on Roofing,Waterproofing and Bituminous Materials and is the direct responsibility of Sub-committee D08.18 on Nonbituminous Organic Roof Coverings.Current edition approved Feb.10,1999.Published October 1999.2Annual Book of ASTM Standards,Vol 04.04.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.movement of structural elements on each side of the joint.Expansion joint curbs and flashings shall be designed toaccommodate this movement.Expansion joints shall be raiseda minimum 200 mm(8 in.)above the roof membrane.8.Explanatory Notes8.1 Perimeter TerminationsThe most common perimeterterminations are shown in Fig.1.Extend sheet roofing mem-brane down the building face covering the joint between thewood blocking and exterior building finish a minimum 25 mm(1 in.).Install the gravel stop as specified by the designer ormanu