How To Install Roof Flashing Against Wood Siding

Bent into an l shape.

How to install roof flashing against wood siding.

Lay a shingle over the step flashing starting at the roof edge. The exterior of a house presents plenty of opportunity for leaks. Cover with cap flashing. How to install step flashing under siding 1.

With no caulk the joint is free to dry out when wet. Unless you re careful step flashing can allow water from the roof to slip behind the gutter and get behind the siding and even the housewrap. Lift the bottom shingle and slip in the kickout flashing. Imo and that is all it is.

This flashing is typically field fabricated from a sheet of 26 ga. Use a square length of 5 4 stock at inside corners with a spline underneath. Use increased lap lengths for added protection. Begin at either end of the wall and set the level middle section of the z flashing onto the top edge of the siding panel with the wider flange upward and against the wall framing.

Install the first length of z flashing. Slice along the bend line about 4 inches into the first piece of flashing at the bottom of the roof with tin snips. All end grain in the siding should be sealed after cutting with a water repellent preservative wrp or primer. Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture.

Slip in the flashing. Fasten that shingle with two galvanized nails at the. Nail it to the sidewall or glue it if nailing isn t possible. Roof and deck flashing recommendations for coastal areas always lap flashing and other moisture barriers properly.

A key part of my approach is using a special piece of flashing at this. Align the step flashing with the leading edge of the starter course and nail it in place using one nail in the upper corner. Or pull the nails out of the closest layer of siding and slip the flashing up under it and hopefully under the moisture barrier. Cut a piece.

With the spline there is no need to caulk the joint. Flush the end of the flashing length with the wall corner and secure the flashing to the framing with an 8d nail at each wall stud. If the kick out and step flashing can t tuck behind the siding screw on cap flashing to cover it then caulk along the top. Do not rely on sealant as a substitute for proper lapping.

The only way is to cut a groove in the siding and flash the roof wall intersection. 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.