Asphalt Shingles - Cylindrical Penetration (Flashing, Storm Collar)
Asphalt Shingles - Cylindrical Penetration (Flashing, Storm Collar)
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Division D - Construction Details
Asphalt Shingles | Cylindrical Penetration (Flashing, Storm Collar) ( Article 12.3.2.1.)
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Asphalt Shingle Details
1 WORK INCLUDED
- (1) Underlayment
- Self-adhering or mechanically fastened, depending upon the designed slope (see 8.1.2 Design). Install “shingle-style” and overlap roll ends at least 150 mm (6”); side laps must be at least 75 mm (3”).
- (2) Penetration flashing
- Conforming to material standards in 11.2 Materials. Drawing shows cut-away, for illustrative purposes only.
- (3) Horseshoe patch
- Self-adhered membrane cut to fit penetration flashing flange and extend beyond flange edges as shown in drawing and required in 11.3.1 General.
- (4) Underlayment patch
- Overlaps the horseshoe patch and fits beneath the upper course of underlayment material.
- (5) Drainage path (top of penetration flashing)
- Minimum 12 mm (1/2”).
- (6) Drainage path (side of penetration flashing)
- Minimum 19 mm (3/4’).
- (7) Exposed fasteners
- Cladding fasteners with gasketed washers. See 11.3.1 General and 13.2.3 Fasteners.
- (8) Storm collar
- Required for pipe-type flashings (see 11.3.3 Penetrations and Vents). Caulked with an untooled bead of an acceptable sealant.
2 RELATED WORK BY OTHERS
- (A) Penetration
- (B-vent shown)
NOTE: See the Standard for additional requirements.
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