With the sill pan.
Install window flashing siding.
Lap the flashing tape 2.
Building paper and window flashing photo 3.
Use an old rag to remove any dirt or debris that may be there.
Next comes another layer of building wrap installed like the first layer.
How is window flashing installed.
Cut back wrb weather resistive barrier a your wrb should be wrapped over the rough opening of the window.
The flashing is easy to cut with tin snips.
Install the sill pan flashing.
Slide the top edge under the window fin then nail off the fin with roofing nails.
At the top tuck metal drip cap flashing under the siding and on top of the second layer of wrap.
Start by nailing the corners in place under the house wrap at the sides and over the house wrap below photo 4.
Cut the corner tape at 45 degree angles to allow for folding over and so the seam is completely flush with the window.
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.
The flashing will be wrapped over the rough opening of the window which is what will be covered eventually by siding.
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.
Pay attention to the raised ribs which provide a flat surface where the window frame rests.
Cut the drip cap to the correct size for your window.
Install the trim just under the drip cap.
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.
Then cut the center section to fit.
It s important to cover all sides top bottom and corners.
Apply a bead of caulk to the felt and set the window in the caulk.
Instruction on how to install exterior 2x4 trim around a new or old window.
A when installing sill pan flashing or the flashing at the bottom of the window you.
Window and door flashing guide this collection of articles and videos will help you find the materials and construction details you need for a leak free installation of doors windows siding and more.
