Parapet Wall Roof Flashing

This short repair video shows how to tie in a flat roof to a parapet wall with an l flashing using only surecoat roof coating and poly mesh.

Parapet wall roof flashing.

The flashing of the head of a batten seam roof at a wall is shown in this detail. Water from either of these locations may bypass flashing and enter the backup wall directly. A copper receiver holds the counterflashing at its top edge. As a roof ages the roofing seams begin to separate often beginning where the flat roof meets the parapet wall.

We also manufacture radius parapet wall caps and can match any profile. Utilizing your own custom design we will fabricate a coping flashing to cover and protect your parapet wall design from high grade aluminum or steel sheets. Whether you prefer a simple screw through or more complex hidden fastener style we are able to build what you require. Wsrca suggests for walls 24 inches and taller that wall cladding be considered in lieu of membrane wall flashings per detail tp 8a.

Parapet wall caps are custom fabricated to any measurements and it usually measure 10 in length but can also be bent in 12 lengths. The top of the roof pan is formed into a bread pan whose upper edge is just above the finished batten. On walls greater than 36 inches high membrane wall flashing sheets are suggested to be strapped i e installed vertically. Mortar bridges below the through wall flashing may be allowing water to cross the cavity into the backup wall.

Attaching flashing to a parapet wall requires basic sheet metal tools and knowledge of sheet metal or copper soldering. The examples shown indicate styles commonly used. At the edge of these roofs parapet walls are commonly found and are vulnerable to leaks if not flashed correctly. 1 roll out bitumen flashing atop the wall from end to end with the.

Copper flashing is locked into this edge and extends at least 8 up the wall.