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.
Roof flashing against siding.
The wall portion of the flashing should be flush against the exterior wall and the shingle portion of the flashing should be on top of the porch roof shingles.
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.
Here silva and the apprentices are installing architectural shingles.
Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture.
Proper roof wall abutment flashing examples.
When he shingled the new roof he just used roofing caulk where the shingles meet the wall no flashing of any kind.
The exterior of a house presents plenty of opportunity for leaks.
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.
Step 8 nail the flashing into place using galvanized roofing nails.
Galvanized sheet metal bent at a 90 degree angle i e.
Open valleys have metal flashing to protect this critical area of the roof.
A common problem area is the point where a gutter dies into an adjoining wall as the photo below illustrates.
Posted march 4 2017 filed under roof installation roof repair maintenance.
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.
The remaining siding on the sidewall will overlap the step flashing and nail.
Bent into an l shape.
The part of the house that it is attached to is wood lap siding.
This flashing is typically field fabricated from a sheet of 26 ga.
They extend the course 3 8 1 2 inch past the starter course then nail in place then install step flashing then the next course and so on up the roof.
While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.
On a wall to be covered with wood cement board vinyl or metal siding the step flashing and associated roofing must be installed first so the siding can cover the top of the step flashing on.
I made this video this morning and i hope it help explain the flashing wall detail where the siding meets the roof.
A key part of my approach is using a special piece of flashing at this.
The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.
