How To Install Step Flashing Under Siding

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.

How to install step flashing under siding.

Nail flashing to roof deck only. Galvanized sheet metal bent at a 90 degree angle i e. Once even a small section of roofing cement fails you ll have a leak. Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture.

But it doesn t work that way. It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing. Posted march 4 2017 filed under roof installation roof repair maintenance. Install the step flashing before running the first row of shingles install a piece of step flashing along the sidewall so that it sits tightly against the roof.

Cover tops of step. Slice along the bend line about 4 inches into the first piece of flashing at the bottom of the roof with tin snips. Shingles need to be fastened with nails in the top area and. Take the first flashing piece at roof bottom and slice it at around 4 inches with tin snips.

How to install step flashing step 1. Bent into an l shape. Lay shingles over step flashing from the roof edge. Lay a shingle over the step flashing starting at the roof edge.

Wide and 2 in. Nail through flashing into shingle do not extend flashing above top of shingle and. This flashing is typically field fabricated from a sheet of 26 ga. Longer than the shingle s exposure.

Cut a piece. 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. Cut step flashing pieces to be 10 in.