Measure the length of the door casing which is the board that runs across the top of the door frame.
How to flash french doors.
The homeowner wants to install french doors in this garage door opening.
At the top tuck metal drip cap flashing under the siding and on top of the second layer of wrap.
On the exterior the pan flashing should lap over the deck or masonry flashing below.
Buy the corners here.
This creates a half inch extension on both sides of the casing.
This is updated training on french door installation.
If forming a pan with peel and stick membrane carry it up the sides at least 6 inches and turn up the inside edge so it is held in place by the underlayment or finish flooring figure 3 27 above.
Good flashing is key to a french door installation.
This is what you need to know.
If your walls have conventional housewrap you ll need to create a flap in the wrb at the head of the door opening by cutting two diagonal slits each about 6 inches long in the wrb beginning at each upper corner of the rough opening.
Apply a bead of caulk to the felt and set the window in the caulk.
Glenn kanak by tim carter.
Fold up this flap temporarily holding it in place with cheap tape.
Add 1 inch to the measurement.