How To Step Flash A Roof

Longer than the shingle s exposure.

How to step flash a roof.

Even if one piece of step flashing fails the flashing and shingle below it start the. Step flashing redirects the water back onto the shingle. If you find damage then you will have to get it. Once you ve shingled up to the sidewall cut a piece of step flashing.

Cut step flashing pieces to be 10 in. Nail through flashing into shingle do not extend flashing above top of shingle and. Cover tops of step. Align the step flashing with the leading edge of the starter course and nail it in place using one nail in the upper corner.

Here s how to do it right the first time. The base is then covered by another metal flashing piece lapped over it. Bend the first piece along the plumb line. The second piece should not be fastened to the base so the two pieces can move against each other independently when the roofing materials shift with seasonal change.

Continuous flashing is sometimes seen where a roof meets a sidewall but in the long run step flashing will do a better job of preventing water leaks. Wide and 2 in. Nail flashing to roof deck only. Where the next piece of flashing will overlap apply a bead of caulk to seal the corner.

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. However it s important to check for damage anyway. Be sure to follow the. One common method is to lay the edge metal under the eaves membrane and over the rake details concrete masonry roofing wrb flashing.

Step flashings are to be installed one per course. Two part flashing systems consist of a base flashing often step flashing that is laced into the finished roof material. Two ways to flash roof edges protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing. The vertical flange of the flashing is to extend up behind the adjoining siding.

When working with step flashing this may involve removing undamaged pieces of flashing as well. Make corner flashing from step flashing.