ASM Eave and Rake Edges (Zinc)

The details listed provide metal panel installation information and the fabrication of metal flashing details for non-ferrous metal standing seam roof systems. More specific details are available from metal panel manufacturers.

Zinc Standing Seam metal roofing systems must meet or exceed RoofStar Guarantee Standards and must be installed to zinc manufacturers published roof system specifications. In addition, approved proprietary underlayment, insulation overlays and metal panel separation sheets must be installed and comply to zinc manufacturers published roof system specifications.

RoofStar Guarantee Standards are blue-linked

ASM Details

1 WORK INCLUDED

(1) Membrane Pre-stripping

RoofStar-accepted self-adhered modified bituminous membrane.

(2) Ice and Water Protection / Insulation Overlay

For slopes 2:12 to 4:12 use RoofStar-accepted self-adhered modified bituminous membrane.

(3) Panel Underlayment

Zinc manufacturer’s approved proprietary metal panel underlayment / insulation overlay protection appropriate for construction of cold or warm roof assemblies. High permeability, triple layer spun bonded non-woven polypropylene fabric underlayment and slip sheets. OR Three-dimensional high-density polyethylene or polypropylene drainage boards and mats.

(4) Metal Panel Clip

26 ga. (0.56 mm) thick two-piece sliding stainless steel clips at a maximum spacing of 300 mm (12") on centre. Fasten to steel deck using a minimum of two # 10-16 self-tapping steel screws with a minimum penetration of 12.5 mm (1/2"). Fasten to wood deck using a minimum of two # 8-14, 4 mm by 31 mm (1 1/4") screws.

(5) Architectural Zinc Metal Roof Panel

0.80 mm (0.031") minimum thickness zinc conforming to European standard EN 988-1996, roll-formed to a maximum panel width of 425 mm (17") with maximum 25 mm (1") tall standing seams double-locked. Eave and rake edges to be folded around continuous edge metal flashing for panel expansion.

(6) Continuous Concealed Clip

26 ga. (0.56 mm) thick stainless steel clip attached with screws at a maximum spacing of 200 mm (8") on centre.(7) Continuous Edge Metal Flashing: 0.80 mm (0.031") minimum thickness zinc attached with screws at a maximum spacing of 200 mm (8") on centre.

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2 RELATED WORK BY OTHERS

(A) Acceptable Deck

Plywood - Minimum 15.1 mm (5/8" nominal) thick, T&G, CSA standard grade C or D. / Steel - Minimum 22 ga. (0.79 mm) to ASTM A653 / A653M or A792 / A792M.

(B) Fascia Board

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.

• For insulated systems provide RoofStar-accepted self-adhered modified bituminous membrane insulation underlayment.

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RoofStar Guarantee Standards for ASM Roof Assemblies

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