How To Flash A Wood Door Outside Of A House?

Installing self-adhered membrane flashing below the door threshold is recommended for exterior doors to prevent leaks. Different types of flashing materials, such as drip-cap flashing, self-adhesive flashing, and building wrap, can be used to protect doors and windows from water damage. Builder Manny Silva demonstrates how to weatherproof the rough opening before installing a new entry door in an old home. The next step is to install drainage at the sill and layers of flashing all around the doorway.

Professional builders Erik and Jaime Perkins provide step-by-step instructions and tips on making custom metal flashing for exterior doors. They also discuss how to seal homes and prevent water damage with door pan flashings. Cap flashing over windows, doors, skirtboards, and deck ledgers is another important aspect of exterior door installation.

Flanged units are often covered by material for flashing windows and patio doors, but nearly every house includes at least one “flangeless” door. Proper flashing is essential to prevent moisture intrusion and air infiltration, and best practice solutions for wood-framed construction are available. Consistently installing flashing in a best practice method on exterior doors will prevent water intrusion problems in less protected locations.

For prehung doors, removing the door and some cladding or siding to access the weather barrier is necessary. A drip cap at the top should be taped to the sheathing, and a pan at the bottom should be lapped properly. 3M flashing tape is a popular choice, especially in cold weather.

In conclusion, proper flashing and sealing are crucial for preventing water leaks, rot, and energy losses at exterior doors.