Weatherstripping should be applied to clean, dry surfaces in temperatures above 20°F (-7° C).
Measure the area to be weatherstripped twice before making a cut.
Apply weatherstripping snugly against both surfaces. The material should compress when the door is shut.
Choose the appropriate door sweeps and thresholds for the bottom of the doors.
Weatherstrip the entire door jamb.
Apply one continuous strip along each side.
Make sure the weatherstripping meets tightly at the corners.
Use a thickness that causes the weatherstripping to press tightly between the door and the door jamb when the door closes without making it difficult to shut.