Difference between revisions of "ASM Valley (Unhooked)"

Revision as of 21:59, 26 July 2021

Notice to Reader
Images used in a Construction Detail are representative and not intended in their representation of an assembly to be prescriptive. Nor are they necessarily drawn to scale. Rather, they are provided to visually convey the Standards, Guiding Principles and Recommendations of the RoofStar Guarantee Standards for a Waterproofing or Water-shedding System. Actual design with respect to dimensions, the selection of materials and their application remains the responsibility of the Design Authority. The full text of applicable RoofStar Guarantee Standards may be read by using the blue hyperlinks

SBS Details

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(1) Valley protection membrane: Accepted self-adhered modified bituminous eave protection membrane.
(2) Valley Metal Panel: Preformed with centre rib.
(3) Metal panel clip: Installed to metal roof panel manufacturer's printed instructions.
(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) Sealant or pre-formed closures: Required at the bottom ends of panels.
(9) Architectural metal roof panel

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.

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