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.

Step flashing at roofs height. 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. 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. The vertical side will be hidden behind the exterior wall covering material.

Roof felt should be installed prior to installing the step and kick out flashing. Align the step flashing with the leading edge of the starter course and nail it in place using one nail in the upper corner. 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. Second step flashing needs to extend 8 to 14 inches above the shingles according to the national roofing contractors association nrca. Once even a small section of roofing cement fails you ll have a leak. If it does follow our first installation procedure.

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. Step flashing size requirements vary according to manufacturer.