Asphalt Shingles - Changes in Slope (Outside Angle)

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Asphalt Shingles - Changes in Slope (Outside Angle)

Division D - Construction Details

Asphalt Shingles | Changes in Slope (Outside Angle) ( Article

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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

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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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