Step Flashing At Roofs Height

It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.

Step flashing at roofs height.

Before running the first row of shingles install a piece of step flashing along the sidewall so that it sits tightly against the roof. Second step flashing needs to extend 8 to 14 inches above the shingles according to the national roofing contractors association nrca. Also before you start installing your flashing you need to look to see if the wall in question has a corner on the roof face as in the image below. Once even a small section of roofing cement fails you ll have a leak.

The vertical side will be hidden behind the exterior wall covering material. But it doesn t work that way. Step flashing if made of metal should be galvanized steel at least 0 019 inches thick irc 2015. Install the step flashing.

Manufacturers requirements can vary anywhere from 2 inches to 10 inches and you probably won t be able to see the sidewall flashing completely anyway. Step flashing should be integrated with the drainage plane above for example overlap housewrap over it. A step flashing is a roof flashing that allows a roof to abut brickwork for instance when a lower height roof runs into a wall a roof meets a chimney or a conservatory roof meets the wall of a house. Step flashing size requirements vary according to manufacturer.

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Step flashing should be extended at least 4 inches up the wall from the roof deck and at least 4 inches out along the roof deck 2015 international residential code irc.