Step Flashing Under Siding

All flashings must integrate with adjacent materials so water always flows to the exterior following the shingle principle.

Step flashing under siding.

Roof leak flashing vinyl siding shingle. Before running the first row of shingles install a piece of step flashing along the sidewall so that it sits tightly against the roof. The bottom edge of the flashing should extend just below the nail line. Each piece of step flashing laps over the shingle below and under the shingle above.

Nail the metal siding onto flashing by following siding manufacturer directions for material installation. Install a piece of step flashing over each shingle in a weave fashion. The lightweight non corrosive pliable product is safer on and off the roof reducing on the job hazards. Step flashings are to be installed one per course.

Flashing is a strip of metal usually aluminum about 8 inches long and bent at 90 degrees with each side at least 5 inches wide. The solution to rotting sidewalls is a small piece of bent metal called a kickout flashing at roofing suppliers which simply directs all that water away from the wall. I was unhappy with the cut i had made in the siding. Step flashing can be made with aluminum copper lead galvanized steel or stainless steel but most commonly it is aluminum or copper.

Alternatively use j channel nails for vinyl. Make sure that you leave a quarter of an inch gap between cement board or wood siding and step flashing. I replaced it the same day with a new piece. On a wall to be covered with wood cement board vinyl or metal.

Install the kickout flashing. Where a slope roof meets a sidewall slip the upper legs of the step flashing under the sheathing wrap see illustration. You have to now install wall siding on the wall down towards 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.

Small l shape flashing pieces must be woven into the. When retrofitting step flashing you will need to slide the step flashing up and under the existing shingles. Nustep set out to design and engineer a step flashing that is easy to work with and brings efficiency to the job site. Kickout flashing installs just like standard step flashing except that half of the kickout flashing hangs over the edge of the roof.

The roof deck flange of step flashings are to be fastened to the surface of each shingle in a position whereby the next course of shingles will cover up hide the flashing from view.