How To Install Roof Flashing Against Wood Siding

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.

How to install roof flashing against wood siding. Install the first length of z flashing. Slip in the flashing. The exterior of a house presents plenty of opportunity for leaks. All end grain in the siding should be sealed after cutting with a water repellent preservative wrp or primer.

Water penetration at deck ledgers can cause wood dry rot and corrosion of connectors leading to deck collapse. A key part of my approach is using a special piece of flashing at this. Slice along the bend line about 4 inches into the first piece of flashing at the bottom of the roof with tin snips. Bent into an l shape.

Cut a piece. Cover with cap flashing. Or pull the nails out of the closest layer of siding and slip the flashing up under it and hopefully under the moisture barrier. With no caulk the joint is free to dry out when wet.

Roof and deck flashing recommendations for coastal areas always lap flashing and other moisture barriers properly. Lift the bottom shingle and slip in the kickout flashing. Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture. Posted march 4 2017 filed under roof installation roof repair maintenance.

This flashing is typically field fabricated from a sheet of 26 ga. 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. Galvanized sheet metal bent at a 90 degree angle i e. With the spline there is no need to caulk the joint.

The only way is to cut a groove in the siding and flash the roof wall intersection. Use increased lap lengths for added protection. Nail it to the sidewall or glue it if nailing isn t possible. Use a square length of 5 4 stock at inside corners with a spline underneath.

Fasten that shingle with two galvanized nails at the. Imo and that is all it is. Align the step flashing with the leading edge of the starter course and nail it in place using one nail in the upper corner. How to install step flashing under siding 1.

Do not rely on sealant as a substitute for proper lapping. 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. 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.