After the paint dries, remove the tape and you'll have a perfect edge. With the first cold breezes of the season in force, November is a good month to determine which of your exterior doors are leaking cold air into your warm home. There's a good chance a lot of that cold air is coming from the bottom of the door, as opening and closing the door causes the door sweep to wear out. To repair the sweep, remove the old sweep, which may mean removing the door. Sweeps are usually held in place with screws.
Sweeps come in different styles but replacements can be purchased at home improvement stores.
You may need to cut the new sweep to fit the existing door. Re-install the new sweep according to the manufacturer's instructions. Don't install the sweep too tight. You should be able to slip a piece of paper under the door. Although most homeowners think of it as a spring or fall job, check your gutters for debris every other month.