Roof Flashing Masonry Detail

This detail shows the use of copper cap flashing extending over copper base flashing at the intersection of a shed roof with a masonry wall.

Roof flashing masonry detail.

It comes in 10 foot lengths or for step flashing 6 inch lengths. Edge flashing and starter strip roofs peel off from the edges so it is critical to hold them tight with the roof deck sealed on the outside we turn to flashing the edges with metal and membranes metal drip edge flashing details roofing wrb flashing. These kinds of houses often have a roof that butts against a wall. The lower edge is hemmed and laps the base flashing and is formed to be a snug fit against the base flashing.

The base flashing laps the roof a minimum of 4. Weeps are provided through the masonry veneer. It is commonly used in two story and side split houses. Flashing single wythe walls at the ends of bar joists which utilize wall pockets for bearing is shown in figures 8 and 8a.

A sheet waterproofing membrane or water resistive barrier is utilized to flash over the back leg of the metal flashing see figure 4. Additional information for flashing single wythe walls particularly architectural concrete masonry walls and means for providing a higher level of structural continuity at flashings is contained in tek 19 2a ref. Details roofing wrb flashing storm proof roof 2. Flashing is installed to surround roof features such as vents chimneys and skylights.

Thru wall flashing originates with a vertical leg in contact with the exterior sheathing tucked or shingled up under the house wrap and a horizontal leg that extends all the way through the masonry to the exterior surface of the wall. The base flashing is fastened to the roof with cleats spaced a maximum of 12 apart. The cap flashing is set in the mortar joint between bricks. Metal roof flashing is a galvanized sheet metal that is bent at a 90 degree angle about 8 to 12 inches on each side of the angle.

Metal roof flashing is a galvanized sheet metal bent at right angles with about eight to 12 inches on each side of the angle. At the base of walls a sheet metal flashing assembly that extends from the face of the backup wall through the masonry should be used to form a drip outside the wall.