How To Install Flashing On Existing Roof

Galvanized sheet metal bent at a 90 degree angle i e.

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. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. These leaks are almost always caused by improper flashing installation or the absence of roof flashing altogether.

But it doesn t work that way. This flashing is typically field fabricated from a sheet of 26 ga. 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. Posted march 4 2017 filed under roof installation roof repair maintenance.

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. Once even a small section of roofing cement fails you ll have a leak. It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.

The leading edge of the flashing is called the drip edge. 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. Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture. December 27 2018 a look at types of drip edge flashing how to cut it and how to retrofit it to an existing roof drip edge flashing is any flashing that protects a building element by shedding water.

Install flashing on existing roof to extend the lifespan of your roof. Coat the flat part of the flashing that sits on the deck using a putty knife. Bent into an l shape.