Remove old stripping (if any) by pulling it out of the track or unscrewing it.
Clean the bottom edge of the door to ensure proper adhesion or fit.
Measure and cut the new weather stripping to fit the width of the door.
Insert or attach the new stripping—slide it into the track or nail/screw it in place.
Check the seal by closing the door and ensuring no light or air passes through.

Installation Steps

Step 1: Preparation and Measurement

Proper preparation is key to success. You need to clear the work area, measure the door, and purchase the correct weather stripping.

Tools: Tape measure, brush, cleaning solution.
Fully raise and secure the garage door.
Clean the bottom of the door from dirt and cobwebs.
Measure the door width to buy the correct length of stripping.
Determine the seal type (T-type, J-type, etc.) by inspecting the channel.

Step 2: Removing the Old Seal

The old, cracked seal must be completely removed to make room for the new one.

Tools: Flat-head screwdriver, pliers.
Find one end of the seal and pry it up with a screwdriver.
Using pliers, pull the seal out of the guide channel along its entire length.
If the seal tears, simply start pulling from the other end.

Step 3: Cleaning the Channels

A clean channel will ensure easy installation and reliable sealing of the new strip.

Tools: Brush, rag, solvent (optional).
Thoroughly clean the channel of old rubber pieces, dirt, and debris.
Wipe the channel with a rag dampened with water or a mild solvent.
Ensure the channel is completely dry before installation.

Step 4: Installing the New Seal

This is the most critical stage. Take your time to ensure the strip sits straight and without distortion.

Tools: Silicone lubricant or soapy water.
Apply some lubricant to the guide channel—this will greatly ease the process.
Insert one end of the T-shaped edge of the seal into the channel.
Carefully pull the seal through the entire channel to the other end of the door. You might need a helper.

Step 5: Trimming and Securing

Once the seal is installed, you need to fit it to size and secure it.

Tools: Knife, pliers.
Leave a small overhang (1-2 cm) on each side and trim the excess strip.
Tuck the remaining ends inside for better sealing.
Gently crimp the ends of the metal channel with pliers so the seal doesn’t move.

Step 6: Final Check

Ensure the job is done well and the weather stripping is performing its function.

Lower the garage door and check the seal’s contact with the floor.
Check for any visible gaps or spaces where light might pass through.
Open and close the door a few times to ensure the seal does not obstruct movement.
Congratulations, you have successfully completed the installation!

Time Spent by Stage

This chart will help you estimate approximately how long each installation step will take.

How to Install Weather Stripping on a Bottom of Garage Door

Final Checklist

The correct type and size of weather stripping have been purchased.
The old seal and debris have been completely removed.
The guide channel is clean and dry.
The new seal is installed straight, without wrinkles.
Excess weather stripping has been trimmed and edges secured.
There are no visible gaps when the door is closed.

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Dmytro Shevchenko

Main Contractor at PrimeGDR | + posts

Dmytro Shevchenko is the owner and lead technician at Prime Garage Door Repair, located at 25975 N Diamond Lake Rd, Unit 111, Mundelein, IL 60060. Known for his honest service and expert craftsmanship, he ensures every garage door operates safely and smoothly for families and companies across the Chicago suburbs.