An exterior door drip cap prevents water damage to the door frame as a result of rain and snow. Installing a drip cap is a simple process that can be completed in a few hours.
Decide if you will install a storm door. Most storm doors have a drip cap included as part of the installation kit. However, if you will not be installing a storm door, then you will need to purchase an individual drip cap.
Drip caps come according to the door size. Typical door sizes are 32, 34 and 36 inches. Purchase a drip cap according to the size of your exterior door.
Set the drip cap channel at the top of the door frame. Center the cap as you place it on the frame.
Apply a layer of silicone caulk to the drip cap. This will prevent water from going between the drip cap and the door frame and causing damage.
Screw the drip cap into place with galvanized screws or the screws provided in the storm door kit.
Apply a coat of exterior paint over the drip cap screws to blend them in with the exterior door frame.