How To Flash A Roof To A Vertical Wall

At roof to wall intersections see figure 1. Use step ﬂashing that has a 2 to 4 inch longer vertical leg than normal. 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.

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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.

Use ﬂashing cement at joints to help secure ﬂashing. In this video isaac illustrates installation of an 18 w. I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall. This flashing is typically field fabricated from a sheet of 26 ga.

Flexible flashing tape seals the eave to the wall. Tape the top of step ﬂashing with 4 inch wide minimum self adhering modiﬁed bitumen roof tape. Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture. Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it.

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. I cut the tape so that it laps onto the housewrap above and 3 in. Galvanized sheet metal bent at a 90 degree angle i e.

Above the roof sheathing. Iws is used in conjunction with step flashing or 4x5 wall flashing to create a water tight junction. Flashing is installed to surround roof features such as vents chimneys and skylights.