How To Install Step Flashing Under Existing Siding

Once even a small section of roofing cement fails you ll have a leak.

How to install step flashing under existing siding. Shingles need to be fastened with nails in the top area and then cover top with another step flashing piece with nails. Galvanized sheet metal bent at a 90 degree angle i e. How to install step flashing under siding 1. Cut a piece.

This flashing is typically field fabricated from a sheet of 26 ga. Nail flashing to roof deck only. Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture. Begin by removing the shingles at the affected area and removing old flashing if present.

It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing. Then nail the new l shaped flashing under the builder s felt but above the fascia board. Slice along the bend line about 4 inches into the first piece of flashing at the bottom of the roof with tin snips. Longer than the shingle s exposure.

Lay shingles over step flashing from the roof edge. Cut step flashing pieces to be 10 in. Wide and 2 in. Posted march 4 2017 filed under roof installation roof repair maintenance.

Bent into an l shape. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Lay a shingle over the step flashing starting at the roof edge. But it doesn t work that way.

Nail through flashing into shingle do not extend flashing above top of shingle and. You have to work up your roof and cover every single end suitable with shingles. Cover tops of step. Every single end should be covered with flashing.