Step Flashing At Roofs Height

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.

Step flashing at roofs height.

Step flashing size requirements vary according to manufacturer. Second step flashing needs to extend 8 to 14 inches above the shingles according to the national roofing contractors association nrca. 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. It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.

But it doesn t work that way. Before running the first row of shingles install a piece of step flashing along the sidewall so that it sits tightly against the roof. If it does follow our first installation procedure. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.

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 if made of metal should be galvanized steel at least 0 019 inches thick irc 2015. Align the step flashing with the leading edge of the starter course and nail it in place using one nail in the upper corner. Roof felt should be installed prior to installing the step and kick out flashing.

Once even a small section of roofing cement fails you ll have a leak. Install the step flashing.