Flashing Under Vinyl Siding

If you have vinyl or metal flanged windows for instance you can install drip cap flashing 4 the home depot over the window itself or over the top trim piece that you install.

Flashing under vinyl siding.

Install undersill trim along the edge of the vinyl over the flashing at the top and bottom. Snap a chalk line cut out the siding and tack up the ledger board. Slip flashing under siding. However in most instances step flashing should be installed behind siding.

Next slide drip flashing behind the vinyl so the lip fits over the top of the ledger as shown at right. By doing so however you miss out on the opportunity to add add energy savings to the project. The type and location of the flashings will vary depending on the type of windows and doors. For a wood window unit drip cap flashing can be installed over the trim piece often called brick molding that comes.

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. Here s why the metal flashing is so important in your case. In terms of materials you will need. I made this video this morning and i hope it help explain the flashing wall detail where the siding meets the roof.

In certain instances flashing may need to be installed on the exterior of siding. Vinyl siding can be installed directly over wall sheathing wood siding or stucco. You have to think about how roof shingles or feathers on a duck work to get a good understanding. When the vinyl siding rests on top of these boards a piece of flashing is needed to create a leak proof conversion between the first piece of vinyl siding and the horizontal fascia board.

You ll need a zip tool to remove vinyl siding. 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. Follow the directions of the siding manufacturer for. It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc.

Leave a 1 4 inch gap between the step flashing and wood siding or cement board.