Parapet Wall Roof Flashing

Many flat and low slope roofs are surrounded by parapet walls.

Parapet wall roof flashing.

Wsrca suggests for walls 24 inches and taller that wall cladding be considered in lieu of membrane wall flashings per detail tp 8a. 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. We also manufacture radius parapet wall caps and can match any profile. On walls greater than 36 inches high membrane wall flashing sheets are suggested to be strapped i e installed vertically.

A copper receiver holds the counterflashing at its top edge. The flashing of the head of a batten seam roof at a wall is shown in this detail. The top of the roof pan is formed into a bread pan whose upper edge is just above the finished batten. Water from either of these locations may bypass flashing and enter the backup wall directly.

Attaching flashing to a parapet wall requires basic sheet metal tools and knowledge of sheet metal or copper soldering. Parapet wall caps are custom fabricated to any measurements and it usually measure 10 in length but can also be bent in 12 lengths. Copper flashing is locked into this edge and extends at least 8 up the wall. 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.

As a roof ages the roofing seams begin to separate often beginning where the flat roof meets the parapet wall. This detail may be used where wall heights are 24 48 inches above roof surface. Mortar bridges below the through wall flashing may be allowing water to cross the cavity into the backup wall. Whether you prefer a simple screw through or more complex hidden fastener style we are able to build what you require.

1 roll out bitumen flashing atop the wall from end to end with the.