How To Install Roof Flashing Against Wood Siding

Cut a piece.

How to install roof flashing against wood siding.

Use a square length of 5 4 stock at inside corners with a spline underneath. Do not rely on sealant as a substitute for proper lapping. Bent into an l shape. Or pull the nails out of the closest layer of siding and slip the flashing up under it and hopefully under the moisture barrier.

Imo and that is all it is. 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. This flashing is typically field fabricated from a sheet of 26 ga. The exterior of a house presents plenty of opportunity for leaks.

Align the step flashing with the leading edge of the starter course and nail it in place using one nail in the upper corner. A common problem area is the point where a gutter dies into an adjoining wall as the photo below illustrates. 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. Slice along the bend line about 4 inches into the first piece of flashing at the bottom of the roof with tin snips.

How to install step flashing under siding 1. Posted march 4 2017 filed under roof installation roof repair maintenance. 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. Lay a shingle over the step flashing starting at the roof edge.

Nail it to the sidewall or glue it if nailing isn t possible. A key part of my approach is using a special piece of flashing at this. The only way is to cut a groove in the siding and flash the roof wall intersection. Fasten that shingle with two galvanized nails at the.

Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture. Lift the bottom shingle and slip in the kickout flashing. Roof and deck flashing recommendations for coastal areas always lap flashing and other moisture barriers properly. Install the first length of z flashing.

Use increased lap lengths for added protection. With the spline there is no need to caulk the joint. Cover with cap flashing. Slip in the flashing.

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. 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.