How To Flash A Roof To A Vertical Wall

Gaf mastering the roof chapter 13 flashing is used to seal and protects joints in a building from water penetration by direct the flow of water away from.

How to flash a roof to a vertical wall.

Iws is used in conjunction with step flashing or 4x5 wall flashing to create a water tight junction. Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it. Galvanized sheet metal bent at a 90 degree angle i e. In this video isaac illustrates installation of an 18 w.

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. Above the roof sheathing. Bent into an l shape. Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture.

At roof to wall intersections see figure 1. Once step flashing is installed per each course of shingles in prescribed fashion to integrate roof with an opposing vertical juncture. Use step flashing that has a 2 to 4 inch longer vertical leg than normal. I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall.

Flashing is installed to surround roof features such as vents chimneys and skylights. I cut the tape so that it laps onto the housewrap above and 3 in. This flashing is typically field fabricated from a sheet of 26 ga.