Step Flashing Under Siding

Nail the metal siding onto flashing by following siding manufacturer directions for material installation.

Step flashing under siding. The patented hdpe flashing is flexible integrating under siding and shingles as well as against chimneys and dormers. I was unhappy with the cut i had made in the siding. The bottom edge of the flashing should extend just below the nail line. Step flashings are to be installed one per course.

The vertical flange of the flashing is to extend up behind the adjoining siding. 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. Kickout flashing installs just like standard step flashing except that half of the kickout flashing hangs over the edge of the roof. Install the kickout flashing.

Nustep set out to design and engineer a step flashing that is easy to work with and brings efficiency to the job site. Small l shape flashing pieces must be woven into the. Alternatively use j channel nails for vinyl. Click to enlarge make sure the sheathing wrap overlaps all step flashings.

Install a piece of step flashing over each shingle in a weave fashion. Roof leak flashing vinyl siding shingle. 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. Before running the first row of shingles install a piece of step flashing along the sidewall so that it sits tightly against the roof.

Each piece of step flashing laps over the shingle below and under the shingle above. All flashings must integrate with adjacent materials so water always flows to the exterior following the shingle principle. Align the step flashing with the leading edge of the starter course and nail it in place using one nail in the upper corner. The lightweight non corrosive pliable product is safer on and off the roof reducing on the job hazards.

You have to now install wall siding on the wall down towards flashing. 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. When retrofitting step flashing you will need to slide the step flashing up and under the existing shingles. On a wall to be covered with wood cement board vinyl or metal.

Where a slope roof meets a sidewall slip the upper legs of the step flashing under the sheathing wrap see illustration.