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.
Install step flashing on existing roof.
It is possible to install new shingles over old shingles.
Step flashing built to protect joints between roofs chimneys and other objects like skylights this flashing steps up above the shingles and attaches to the object providing comprehensive water protection.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
Galvanized sheet metal bent at a 90 degree angle i e.
Vent pipe flashing as the name implies this flashing is usually.
With step flashing you do a little flashing then a lot of roofing then a little more flashing and so on.
This allows each step flashing piece to overlap the piece below.
Posted march 4 2017 filed under roof installation roof repair maintenance.
Be sure that it hangs so that it overlaps with the.
Length to extend 5 in.
Up the wall and 5 in.
Each piece of step flashing laps over the shingle below and under the shingle above.
This flashing is typically field fabricated from a sheet of 26 ga.
Bend the 10 in.
Before we get into the retrofitting we first must discuss roofing over existing shingles.
This is where you will hang the counter flashing.
Bent into an l shape.
Roofing over existing shingles.
Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture.
Nail flashing to roof deck only.
Kickout flashing installs just like standard step flashing except that half of the kickout flashing hangs over the edge of the roof.
But it doesn t work that way.
Install the kickout flashing.
Over the roof deck.
Then sink one nail into the sidewall to hold the step flashing in place.
Flashing can be purchased in pre formed styles to help you install it more easily and these include.
If you were not provided with base flashing you can install step flashing up the side of the chimney.
This article discusses retrofitting step flashing on a re roof where the contractor left the old flashing in place and did not install new sidewall step flashing.
It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.