How To Install Flashing Under Vinyl Siding

Lift the bottom shingle and slip in the kickout flashing.

How to install flashing under vinyl siding. 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. Here s why the metal flashing is so important in your case. Install flashing before starting to apply the siding. Fasten that shingle with two galvanized nails at the.

Cut the drip cap to the correct size for your window. At the top tuck metal drip cap flashing under the siding and on top of the second layer of wrap. However in most instances step flashing should be installed behind siding. Apply a bead of caulk to the felt and set the window in the caulk.

You have to think about how roof shingles or feathers on a duck work to get a good understanding. Slip in the flashing. Attach the flashing tape above the window and then slip the drip cap into the siding and attach to the tape. Lay a shingle over the step flashing starting at the roof edge.

Unless already installed a water resistive barrier should be applied to the house prior to installing vinyl siding. It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc. Nail j channel along both sides of the cutout. Place all other fasteners in the center of the slots.

Center the fasteners in the slots to allow for expansion and contraction. Nail it to the sidewall or glue it if nailing isn t possible. Using a pry bar you will need to remove a layer of siding from above the window that you want to install the drip cap on. Cover with cap flashing.

How to install step flashing under siding 1. Install the trim just under the drip cap. Install undersill trim along the edge of the vinyl over the flashing at the top and bottom. Then tack the ledger into place with 16d nails.

Start fastening in the center of the panel and work toward the ends. Use an old rag to remove any dirt or debris that may be there. In certain instances flashing may need to be installed on the exterior of siding. A flat level wall surface is necessary for proper installation of vinyl siding.

Slice along the bend line about 4 inches into the first piece of flashing at the bottom of the roof with tin snips. Refer to important notes for more information on water resistive barriers. Cut a piece. 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.

Next comes another layer of building wrap installed like the first layer.