ASM Eave Protection and Underlayment

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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

ASM Details

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(1) Metal flashing underlayment/separation membrane: required for metal flashings installed on wood substrates.
(2) Metal edge flashing: Installed to manufacturer's printed instructions.
(3) Ice and water protection: One ply of accepted self-adhered modified bituminous membrane.
(4) Underlayment: Proprietary underlayment installed perpendicular to the slope with 50 mm (2") minimum side laps and 100 mm (4") minimum end laps.

Note:

This application pertains only to slopes 1:3 (4" in 12") or greater. For slopes less than 1:3, see Construction Detail ASM 8.1.2.
Slip sheet not shown for clarity

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.