Vinyl Siding To Roof Flashing

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.

Vinyl siding to roof flashing.

The water runs down the siding and at the bottom of the first row of vinyl siding it drips off and contacts the metal flashing as it runs across the top of the fascia board. The water then runs off the flashing because it can t go up the flashing as it extends up behind the siding. With the flashing in place let s see what happens. Even if the roof has been properly flashed against the sidewall this one hasn t water can still run down the side of the house and behind the siding causing rot.

Expansion and contraction of the siding will loosen nails that are fastened only. In certain instances flashing may need to be installed on the exterior of siding. The solution to rotting sidewalls is a small piece of bent metal called a kickout flashing at roofing suppliers which simply directs all that water away from the wall. Galvanized roofing nails for your vinyl siding unless the sheathing has foam on it.

Don t drive the nails tight. Then you ll want longer ones. It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc. Each panel should be able to move back and forth or the siding will bubble on really hot days.

Improper installation of flashing where roofing shingles meet vinyl siding. I made this video this morning and i hope it help explain the flashing wall detail where the siding meets the roof. Then slip flashing behind the siding covering the top edge of the ledger. Start by making an outline on the siding where you want to position the ledger board.