How To Flash Vinyl Siding

You will also need vinyl corners and trim for windows and doors as well as a termination trim for where you meet other surfaces such as soffits and masonry work.

How to flash vinyl siding.

If your house has a roof line that extends past a corner of two walls make the first piece of step flashing a corner. Then tack the ledger into place with 16d nails. When notching panel at bottom of window leave 1 4 in. To push water to the outside builder s felt and flashing membrane direct water past the nailing hem of the first full panel below the window.

Next slide drip flashing behind the vinyl so the lip fits over the top of the ledger as shown at right. Slip in the flashing. Install undersill trim along the edge of the vinyl over the flashing at the top and bottom. In certain instances flashing may need to be installed on the exterior of siding.

Cover with cap flashing. Position a nail at the top of the upper slot on both sides of the corner post leaving a gap of approximately 1 32 0 8mm between the nail heads and the corner posts. Run roofing felt up the wall about an inch higher than the wall side. Cut the drip cap to the correct size for your window.

Using a pry bar you will need to remove a layer of siding from above the window you want to install the drip cap on. In terms of materials you will need. However in most instances step flashing should be installed behind siding. Lengths of j channel flashing building paper corrosion resistant nails and enough vinyl siding to cover your home.

But unlike fiber cement siding wood is almost sure to rot. Use an old rag to remove any dirt or debris that may be there. Place the corner post in position allowing a 1 4 6 4mm gap between the top of the post and the eave or soffit. It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc.

Nail it to the sidewall or glue it if nailing isn t possible. Behind the window casing undersill trim secures the cut vinyl panel under a window. Expansion space all around. Install roofing felt before starting step flashing.

Attach the flashing tape above the window and then slip the drip cap into the siding and attach to the tape. When it comes to flashing siding corners many builders simply use a 1x wood corner. Lift the bottom shingle and slip in the kickout flashing.