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How to install wall to roof flashing.
Install your underlayment completely and your shingles up to where the wall begins so that the first piece of flashing or the corner flashing will rest on a shingle.
To make corner flashing take your tin snips and cut a 45 degree line from an outside corner to the center fold.
Install the step flashing.
These leaks are almost always caused by improper flashing installation or the absence of roof flashing altogether.
Before running the first row of shingles install a piece of step flashing along the sidewall so that it sits tightly against the roof.
Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
How to install roof flashing against a wall with a corner when there is a corner where the roof meets the wall you will need a corner flashing piece.
The wall leg of the kickout should be applied over the housewrap cut a 2 ft square piece of housewrap and tuck one edge into the horizontal cut the same one the first piece of housewrap was slipped into and up under the housewrap on the wall by at least 5 in.
How to install roof flashing against a wall.
Now install the kickout flashing and step flashings up the roof as needed.
A corner flashing piece can either be bought from the hardware store or it can be made using a regular step flashing piece.
How to install porch roof flashing.
Step flashing redirects the water back onto the shingle.
Metal flashing often is made of galvanized steel or aluminum but it can also come in copper.
The size and shape of the roof flashing you buy will depend on the area that you plan to install the flashing.
Naturally you will need to purchase roof flashing before you begin the installation.
