How To Flash A Roof To A Vertical Wall

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.

How to flash a roof to a vertical wall.

This flashing is typically field fabricated from a sheet of 26 ga. Flexible flashing tape seals the eave to the wall. 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.

Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape. Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it. I cut the tape so that it laps onto the housewrap above and 3 in. Once step flashing is installed per each course of shingles in prescribed fashion to integrate roof with an opposing vertical juncture.

Bent into an l shape. In this video isaac illustrates installation of an 18 w. 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. At roof to wall intersections see figure 1.

Galvanized sheet metal bent at a 90 degree angle i e. Use step flashing that has a 2 to 4 inch longer vertical leg than normal. Iws is used in conjunction with step flashing or 4x5 wall flashing to create a water tight junction.