Difference between revisions of "ASM Valley (Hooked)"
Difference between revisions of "ASM Valley (Hooked)"
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| + | <big><big>Division D - Construction Details</big></big> | ||
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| + | <big><big><big><big><big>ASM 10.3.1 Hooked Valley Flashing</big></big></big></big></big> | ||
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Revision as of 20:35, 7 September 2021
Division D - Construction Details
ASM 10.3.1 Hooked Valley Flashing
| 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. The full text of the referenced requirements in the Standard may be read by using the blue hyperlinks | |
ASM Details
- Click below for a printable version of this page (N/A)
1 WORK INCLUDED
- (1) Valley Protection Membrane
- Accepted self-adhered modified bituminous eave protection membrane.
- (2) Valley flashing
- (3) Fastening
- Metal valley panels to be secured with compatible, non-corrosive, flat head fasteners 200 mm (8") o/c. Metal roof panel to metal valley panel overlap must be a minimum of 125 mm (5"). See 10.3.5.2.2 (5).
- (4) Valley panel overlap
- Overlaps minimum 200 mm (8") sealed with two rows of acceptable sealant or butyl tape, and secured with drag load fasteners.
- (5) Membrane flashing
- Accepted self-adhered modified bituminous eave protection membrane.
- (6) Underlayment
- The type of underlay required is determined by roof slope.
- (7) Ventilation layer
- A ventilation space is required on slopes less than 1:3; entangled mesh (shown) may be used as void fill. The ventilation space facilitates drying as condensation forms on the underside of the metal panels.
- (8) Architectural metal roof panel
2 RELATED WORK BY OTHERS
- (A) Acceptable Deck
NOTE: See the Standard for additional requirements.
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