Flashing Roof To Existing Siding

Step flashing is used where a roof meets a.

Flashing roof to existing siding.

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. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. A common problem area is the point where a gutter dies into an adjoining wall as the photo below illustrates. Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture.

While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately. I made this video this morning and i hope it help explain the flashing wall detail where the siding meets the roof. 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. On lean to roofs where a sloping roof plane meets the siding endwall flashing is necessary to prevent leaks.

A key part of my approach is using a special piece of flashing at this. On re roofs the sad case is that contractors do not always take the time to retrofit step flashing because it slows them down adds cost and additional carpentry work to repair or replace siding. This flashing is typically field fabricated from a sheet of 26 ga. Step flashing is needed whether a contractor installs new roofing or re roofs over existing shingles.

How to install step flashing under siding. Keep water out of your home and running down the roof where it belongs with appropriate use of step flashing. The exterior of a house presents plenty of opportunity for leaks. 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.

Bent into an l shape. Posted march 4 2017 filed under roof installation roof repair maintenance. Open valleys have metal flashing to protect this critical area of the roof.