It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc.
Flashing shingles to siding.
However in most instances step flashing should be installed behind siding.
The remaining siding on the sidewall will overlap the step flashing and nail.
In certain instances flashing may need to be installed on the exterior of siding.
Vertical edges need to be bent at 45 degrees angles in order to create kick out.
If this is a repair job the siding must also be removed and replaced with the flashing.
How to install step flashing.
Cement or roof caulk.
First step flashing must be installed before the siding so that the siding can cover the top of the flashing.
Install the first course of shingles.
Roof side flashing should be folded down over facing boards along roof lines.
They extend the course 3 8 1 2 inch past the starter course then nail in place then install step flashing then the next course and so on up the roof.
Videos roofing wrb flashing siding exterior trim plumbing electrical galvanic corrosion explained contact between dissimilar metals like copper fittings threaded into steel pipe or copper flashing fastened with steel nails sets up an electro chemical reaction that causes corrosion and leads.
On a wall to be covered with wood cement board vinyl or metal siding the step flashing and associated roofing must be installed first so the siding can cover the top of the step flashing on.
Here silva and the apprentices are installing architectural shingles.
Installing new shingles is a major investment for most homeowners so it makes good sense to take steps to protect the integrity of the roof for as long as possible.
If the sidewall is stucco or solid wood like ours and you can t open it to get flashing behind it continue the step flashing to the peak of the roof then cover the step flashing with cap flashing.
Flashing serves a single.
Second step flashing needs to extend 8 to 14 inches above the shingles according to the national roofing contractors association nrca.
Improper installation of flashing where roofing shingles meet vinyl siding.
