A drip refers to a strip of metal, plastic, or wood that is used to divert water from falling down the sides of a building. Sometimes a type of crown molding can also be used. A drip is usually placed over a door or window, or where the roof meets the exterior walls. Without a drip, water can leak down behind your walls and frames and cause extensive damage.
When to Use a Drip
A drip will only protect windows and doors that are in direct exposure to rain. You will not need to use one if you have a porch or another type of building structure that already covers them.
Step 1 - Purchase a Cap
Purchase a drip cap that will fit above your door or window.
Step 2 - Caulk
Lay out a bead of caulking onto the back of the drip cap just before you put it in.
Step 3 - Add a Drip Cap
Put the drip cap above your door or window along the frame. Use a level to straighten it out and check to see that both ends match up evenly.
Use galvanized ½ inch screws to hold the drip in place. These can be painted over if you want.