Install Window Flashing Siding

Pay attention to the raised ribs which provide a flat surface where the window frame rests.

Install window flashing siding.

Cut back wrb weather resistive barrier a your wrb should be wrapped over the rough opening of the window. With the sill pan. Install the flashing under the window level and tack the new window in place then cut a piece of aluminum flashing to width so it extends from the new window to overlap the nailing hem of the siding below. Attach the flashing tape above the window and then slip the drip cap into the siding and attach to the tape.

Building paper and window flashing photo 3. 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. Install the trim just under the drip cap.

Run the tape over the jamb. Lap the flashing tape 2. Next comes another layer of building wrap installed like the first layer. Use an old rag to remove any dirt or debris that may be there.

The flashing will be wrapped over the rough opening of the window which is what will be covered eventually by siding. Slide the top edge under the window fin then nail off the fin with roofing nails. It should include end dams and if the wall includes a rain screen cavity a small gap 1 8 or so should be left between the flashing and head trim to allow moisture to escape. Cut the corner tape at 45 degree angles to allow for folding over and so the seam is completely flush with the window.

The flashing is easy to cut with tin snips. This should be installed in a bed of caulking on the window frame before the wrb taped to the sheathing and then lapped by the wrb. A when installing sill pan flashing or the flashing at the bottom of the window you. How is window flashing installed.

Then cut the center section to fit. Instruction on how to install exterior 2x4 trim around a new or old 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. Apply a bead of caulk to the felt and set the window in the caulk.

Install the sill pan flashing.