MF 13.3.1-1 Metal Cap Flashing (joints)

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MF 13.3.1-1 Metal Cap Flashing (joints)

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

MF 13.3.1-1A.jpg
MF 13.3.1-1B.jpg

MF 13.3.1-1.1 (Standing Seam).jpg

MF 13.3.1-1.2 (S-Lock, Single).jpg

MF 13.3.1-1.2 (S-Lock, Double).jpg

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Print Sheet


(1) Metal Cap Flashing
Fabricate and install in keeping with the Standards in Part 13 METAL FLASHINGS. Base membrane must extend across the top of the parapet (to waterproof the structure and separate the metal from moisture-susceptible substrates) and extend down the outside face of the parapet at least 50 mm (2”). Edges must be hemmed (1a), although a kicked-out drip edge is optional (see 13.3.2 (1) Fabrication).
(2) Fasteners
Select for compatibility with metal flashing, membrane and substrate (see 13.2.3 Fasteners).
(3) Clips
Install cap flashings using a continuous or discontinuous metal ‘wind’ clip affixed to the outside face of the parapet, or to the top of the parapet (see Alternate illustration). Fasten the clip following the standards in both 13.3.3 Securement and 13.3.5 Cap, Counter and Base Flashings.
(4) Seam
Must be either a Standing Seam (illustrated) or an S-lock (single or double – see inset illustrations). The use of acceptable seams allows for multi-directional expansion and contraction of sheet metal.


(A) Parapet Structure
(B) Parapet woodwork (sloped toward roof surface

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.

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