Asphalt Shingles - Valley Intersection with Ridge
Asphalt Shingles - Valley Intersection with Ridge
Revision as of 14:21, 30 June 2022 by James Klassen (talk | contribs) (James Klassen moved page ASh 10.5.1 Valley Transition (Upper) to Asphalt Shingles Valley Intersection with Ridge)
Division D - Construction Details
Asphalt Shingles | Valley Intersection with Ridge ( Article 10.3.5.9.)
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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 2.2.1.2.).
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Asphalt Shingle Details
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1 WORK INCLUDED
- (1) Valley Protection Membrane
- Applied beneath the metal valley flashing.
- (2) Valley Metal Flashing
- Required for open valleys.
- (3) Underlayment
- Required, and installed to overlap the Valley Protection Membrane and the Valley Metal Flashing. Install ‘shingle-style’, following the requirements for side and end laps; use acceptable fasteners, or adhere (if a self-adhering membrane) in keeping with the manufacturer’s published requirements.
- (4) Lower Membrane Patch
- Required to cover the joint where the ridgeline of one roof joins the sloped plane of another. Cut as illustrated and apply to the slope; the patch must be cut large enough to extend upslope at least 150 mm (6”), but must not exceed the exposure of the ridge cap shingles.
- (5) Upper Membrane Patch
- Required to overlap the Lower Membrane Patch, ‘shingle-style’, by at least 50 mm (2”). Extend the patch upslope past the Metal Valley Flashing at least 150 mm (6”).
- (6) Shingles (field)
- (7) Shingle Ridge Cap
- (8) Split Ridge Cap Shingle Transition
- Required to tie the ridge caps into the adjacent roof field shingles.
2 RELATED WORK BY OTHERS
- (A) Acceptable Deck
NOTE: See the Standard for additional requirements.
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