At the top tuck metal drip cap flashing under the siding and on top of the second layer of wrap.
Install window flashing siding.
Apply a bead of caulk to the felt and set the window in the caulk.
Cut back wrb weather resistive barrier a your wrb should be wrapped over the rough opening of the window.
Lap the flashing tape 2.
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.
Attach the flashing tape above the window and then slip the drip cap into the siding and attach to the tape.
Pay attention to the raised ribs which provide a flat surface where the window frame rests.
The flashing is easy to cut with tin snips.
Cut the corner tape at 45 degree angles to allow for folding over and so the seam is completely flush with the window.
Cut the drip cap to the correct size for your window.
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.
Run the tape over the jamb.
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.
Next comes another layer of building wrap installed like the first layer.
Building paper and window flashing photo 3.
Slide the top edge under the window fin then nail off the fin with roofing nails.
Install the sill pan flashing.
It s important to cover all sides top bottom and corners.
The flashing will be wrapped over the rough opening of the window which is what will be covered eventually by siding.
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.
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.
Start by nailing the corners in place under the house wrap at the sides and over the house wrap below photo 4.
With the sill pan.
Then cut the center section to fit.
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.
