Difference between revisions of "EPDM Metal Butt Joint"
Difference between revisions of "EPDM Metal Butt Joint"
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| − | <big><big><big><big><big>EPDM | Metal Butt Joint (Linear Metal Flashings) ([[EPDM_Roof_Systems_Standard#13.3.2.2 | + | <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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[[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''']] | [[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 | + | [[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 C''']] |
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Latest revision as of 23:01, 12 November 2025
Division D - Construction Details
EPDM | Metal Butt Joint (Linear Metal Flashings) ( Article 13.3.2.2.)
| Notice to Reader | |
| Images used in a Construction Detail are representative and not prescriptive, and are not necessarily drawn to scale. They are intended to support the related Standard (Ref. Division A, Article 2.2.1.2.).
The reader may link to the related Article in the detail title, or link to the Standard as it relates to a specific element in the detail. All hyperlinks are displayed blue text. | |
EPDM Details
1 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 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 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.
2 RELATED WORK BY OTHERS
- (A) Parapet Structure
- (B) Roof-side of parapet structure
NOTE: See the Standard for additional requirements.
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