Roof Flashing Masonry Detail

It is used to seal the gap between walls and intersecting roofs.

Roof flashing masonry detail.

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. 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. The lower edge is hemmed and laps the base flashing and is formed to be a snug fit against the base flashing. 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. The base flashing laps the roof a minimum of 4. The base flashing is fastened to the roof with cleats spaced a maximum of 12 apart. Flashing single wythe walls at the ends of bar joists which utilize wall pockets for bearing is shown in figures 8 and 8a.

It comes in 10 foot lengths or for step flashing 6 inch lengths. 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. A sheet waterproofing membrane or water resistive barrier is utilized to flash over the back leg of the metal flashing see figure 4. Flashing is installed to surround roof features such as vents chimneys and skylights.

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. 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. Metal roof flashing can be use to seal gaps between roof walls. It is commonly used in two story and side split houses.

Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer. Details roofing wrb flashing storm proof roof 2.