Flashing Where Siding Meets Roof

The exterior of a house presents plenty of opportunity for leaks.

Flashing where siding meets roof.

Bent into an l shape. This flashing is typically field fabricated from a sheet of 26 ga. Unless you re careful step flashing can allow water from the roof to slip behind the gutter and get behind the siding and even the housewrap. Posted march 4 2017 filed under roof installation roof repair maintenance.

It is at the back of the porch roof where the roof meets the house siding. Flashing is a strip of metal usually aluminum about 8 inches long and bent at 90. If your flashing is new you may need a bonding primer. Even if the roof has been properly flashed against the sidewall this one hasn t water can still run down the side of the house and behind the siding causing rot.

Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture. The solution to rotting sidewalls is a small piece of bent metal called a kickout flashing at roofing suppliers which simply directs all that water away from the wall. Step flashing is used where a roof meets a wall to cover the junction of those elements preventing leaks. Traditionally the flashing was installed and hidden under the siding.

Galvanized sheet metal bent at a 90 degree angle i e. Drip edge metal valley flashing dormer chimney and kickout flashing are types of roof flashing that shed water away from the connections between roofs walls chimneys and other building assemblies. Below are two photographs of roof wall step flashing completed and effective of a slate roof against a brick wall below left and in process with step flashing against a dormer sidewall before the dormer siding has been put in place below right. Roof flashing on a porch roof.

A key part of my approach is using a special piece of flashing at this. Ground zero for roof rot is often where roofs meet walls. Today the flashing is on top of the siding. There is another place that roof flashing has now invaded.

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. A common problem area is the point where a gutter dies into an adjoining wall as the photo below illustrates.