But it doesn t work that way.
How to install flashing on existing roof.
Step flashing for chimneys once the shingles have been installed lay the base flashing around the base of the chimney approximately 4 past each end.
Apply roofing cement when installing drip edge on an existing roof.
Finally reattach all shingles removed in the process.
Coat the flat part of the flashing that sits on the deck using a putty knife.
It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
Once even a small section of roofing cement fails you ll have a leak.
Use roofing nails to install the l shaped flashing flush with the roof and wall then cover it with roofing cement and reattach the roofer s felt.
Many people who have porches attached to their homes have problems with water leaks at the junction of the porch and the exterior wall of the home.
These leaks are almost always caused by improper flashing installation or the absence of roof flashing altogether.
Bent into an l shape.
The leading edge of the flashing is called the drip edge.
Posted march 4 2017 filed under roof installation roof repair maintenance.
Galvanized sheet metal bent at a 90 degree angle i e.
Installing your roof flashing is going to be slightly different depending on the specific type that you re installing.
Drip edge installation on an existing roof.
How to install porch roof flashing.
Lift the shingles slide the drip edge underneath them and position it so that it extends over the gutters then replace the shingles and push down to seat the drip edge.
Install flashing on existing roof to extend the lifespan of your roof.
