ASh 10.1.2 Diverter Flashing

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ASh 10.1.2 Diverter Flashing

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Asphalt Shingle Details

Applicable to slopes 1:6 (2" in 12") and greater.

7.1.4.1.1.jpg

1 WORK INCLUDED

(1) Underlayment & Eave Protection
One ply of self-adhered modified bituminous underlayment material. Lap 50 mm (2") minimum on sides and 150 mm (6") minimum on ends. Also refer to the Accepted Materials section of this Manual.
(2) Edge Metal Flashing
Optional (cf. 2.2.9 Wood Deck Overlay Sheathing (Non-Structural) for specific requirements), installed to manufacturer's printed instructions.
(3) Starter Course
Consists of same type shingles used for roof, applied tabs facing up the slope.
(4) Strip or Standard Shingles
Applied as recommended by manufacturer. Laminated shingles are not acceptable for this application.
(5) Compatible Mastic
Heavy bead of compatible asphaltic mastic at rakes (gables) and valleys.
(6) Protrusions
Curbs and skylights must be flashed with underlayment so as to shed water, with minimum 125mm (5") up vertical surfaces and 150 mm (6") lapping onto field surfaces. Vent stack underlayment flashing should fit tight to the vent pipe and be sealed with compatible mastic. For fire-rated stacks or hot pipe protrusions, strip in secondary metal deck flashing before installing rated stack / pipe flashing.
(7) Nailing
Note manufacturer's recommended nailing pattern. Placement varies with manufacturer.

2 RELATED WORK BY OTHERS

(A) Acceptable Deck

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.



RoofStar Guarantee Standards for Asphalt Shingles Roof Assemblies

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