ASh 9.1.4 Slope Change (Outside Angle)

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ASh 9.1.4 Slope Change (Outside Angle)

Division D - Construction Details

ASh 9.1.4 Slope Change (Outside Angle)

Notice to Reader
Images used in a Construction Detail are representative and not prescriptive. Nor are they necessarily drawn to scale. Rather, they are provided to visually convey the requirements of the Standard they represent. Unless otherwise required by the Standard, dimensions, the selection of materials and their application remains the responsibility of the Design Authority.

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Asphalt Shingle Details

ASh 9.1.4 CD.jpg


(1) Underlayment
Underlayment on the upper slope must overlap the metal transition flashing and lower slope underlayment.
(2) Self-adhered (eave protection) Membrane
Optional for this slope change configuration, to seal the upper edge of the metal transition flashing. When installed, the SA membrane must overlap the metal by at least 50 mm (2”) and extend upslope past the edge of the lower slope underlayment by at least 50 mm (2”).
(3) Metal Transition Flashing
The lower leg must measure at least 100 mm (4”); the upper leg should measure at least 125 mm (5”).
(4) Starter Shingle
(5) Shingle


(A) Acceptable Deck

NOTE: See the Standard for additional requirements.

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