View source for EPDM Metal Butt Joint

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<big><big>Division D - Construction Details</big></big>
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<big><big><big><big><big>EPDM | Metal Butt Joint (Linear Metal Flashings) ([[EPDM_Roof_Systems_Standard#13.3.2.2._Seams | Article 13.3.2.2.]])</big></big></big></big></big>
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<div class="panel-heading"><big>'''EPDM Details'''</big></div>
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[[File:Part 13 - Construction Detail - Flat Butt Joints - A.png | thumb | 700px | link=https://rpm.rcabc.org/images/7/7a/Part_13_-_Construction_Detail_-_Flat_Butt_Joints_-_A.png | '''Drawing A''']]
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[[File:Part 13 - Construction Detail - Flat Butt Joints - B.png | thumb | 700px | link=https://rpm.rcabc.org/images/7/7e/Part_13_-_Construction_Detail_-_Flat_Butt_Joints_-_B.png | '''Drawing B''']]
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[[File:Part 13 - Construction Detail - Flat Butt Joints - C.png | thumb | 700px | link=https://rpm.rcabc.org/images/7/71/Part_13_-_Construction_Detail_-_Flat_Butt_Joints_-_C.png | '''Drawing A''']]
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=== WORK INCLUDED ===
;(1) Roof membrane: Representative and carried over top of ''parapet'', down the outside face at least 50.8 mm (2”) past any cold joint.
;(2) Cap (coping) flashing: Fabricated according to the requirements in [[EPDM_Roof_Systems_Standard#Part 13 | Part 13]].
;(3) Drip edge: Hemmed edge of cap flashing, broken (bent) outward at least 30° from vertical, and fabricated to receive the cleat; dimensions of the drip edge must conform to the requirements in [[EPDM_Roof_Systems_Standard#13.2.2.1._Fabrication_of_Flashing | Article 13.2.2.1.]]
;(4) Cleat (wind clip): Required on the outside face of a ''parapet'' and fastened at maximum intervals of 304.8 mm (12”), O.C.
;(5) Metal saddle (Backup plate): Fabricated from the same material as the cap flashing, and mechanically secured to the ''parapet'', over the roofing membrane.  The saddle is formed with a cleated edge for the outside face of the flashing.
;(6) Sealant: Required between the saddle ("Backup Plate" – SMACNA) and the cap flashing; apply two parallel beads of untooled gunnable sealant or butyl tape to each end of the saddle to seal the flashing to the saddle.
;(7) Gasketed screws (roof-side face of cap flashing only): Permissible in the RGC Standard, but subject to engineering requirements.

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=== RELATED WORK BY OTHERS ===
;(A) Parapet Structure:
;(B) Roof-side of parapet structure: 

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'''NOTE''': See the [[EPDM Roof Systems Standard | '''Standard''']] for additional requirements.

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