Weatherseal Replacement (Side & Top)
Replacing perimeter weatherstripping on sectional overhead doors
Warnings
Ensure the door frame is structurally sound before attaching new weatherseal. Rotten or damaged jambs should be repaired first.
Required PPE
- Safety glasses
- Leather gloves
Tools Required
- Replacement weatherseal (vinyl, rubber, or brush — match existing profile)
- Tape measure
- Utility knife or scissors
- Screwdriver or drill
- Galvanized nails or screws
- Stepladder
Procedure — 5 Steps
Remove the old weatherseal
Peel or pry the old side and top weatherstripping from the door frame. Remove any nails, staples, or screws left behind. Clean the mounting surface of debris and old adhesive.
Measure and cut new seal
Measure each side jamb from the floor to the top of the door opening. Measure the header across the top. Cut the new weatherseal to length, adding 1 inch for overlap at the corners.
Install the side seals
Starting at the bottom, press the weatherseal against the jamb with the flexible fin or flap contacting the door face. Secure with nails or screws every 8–12 inches. The seal should compress slightly when the door is closed — not too tight (causes drag) or too loose (allows drafts).
Install the top seal
Attach the header seal across the top of the opening. Overlap the side seals at the corners for a continuous seal. Secure with nails or screws every 8–12 inches.
Test the seal
Close the door and inspect for daylight gaps around the perimeter. Open and close the door several times to confirm the seals do not interfere with door travel. Adjust positioning as needed.
Training Videos
Disclaimer: These videos are produced by third-party YouTube channels and are not affiliated with Doorbot. Video content may not align exactly with the procedures above, may depict techniques that differ from DASMA or manufacturer recommendations, and may show tasks that are dangerous if performed without proper training and equipment. Always follow the written procedure, your company's safety policies, and applicable industry standards. Use these videos as supplementary reference only.