Garage door repair
Light, water or snow getting in under your garage door?
The rubber seal along the bottom of the door wears, tears and pulls out of its track over time. Replacing it, and the retainer that holds it when that is bent, closes the gap.
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Is this what you're seeing?
You can see daylight under the closed door, or water and snow get in.
The rubber strip along the bottom is cracked, flattened or hanging out.
The aluminum channel the seal slides into is bent or loose.
The floor is uneven, so the door seals on one side and not the other.
What's going on
Most steel doors hold a rubber bottom seal in a metal retainer screwed to the bottom section. Sun, cold and the door pressing on the floor every day wear the rubber down until it cracks or slips out of the channel.
If the retainer itself is bent, often from the door coming down on something, a new seal will not stay put until the retainer is replaced too.
What to do right now
Do
Close the door and look along the bottom edge for light or gaps.
Check whether the seal is torn, or whether the metal channel holding it is bent.
Measure the width of the door so we bring the right length of seal.
Don't
Don’t raise the opener’s close setting to force a better seal. That can stop the safety reverse from working.
Don’t pull the old seal out if the retainer is bent. It may not slide back in.
How we fix it
Seal and retainer work is part of our garage door repair service and is often done alongside a tune-up. Our records show what these jobs involved.
What the work involved
- New bottom seal17 of 43 jobs
- Retainer14 of 43 jobs
- Door lubricated12 of 43 jobs
- Springs11 of 43 jobs
- Rollers10 of 43 jobs
- Bottom seal jobs since 2017
- 48
- Typical time on site
- 30 min
Recent jobs like this
Jun 2026
ThorntonFound
The bottom section and its weather seal were damaged.
Fixed
Replaced the bottom section, removed the damaged seal and installed a new one.
May 2026
LakewoodFound
The bottom retainer and seal needed replacing.
Fixed
Installed a new 16-foot L-shaped retainer and bottom seal.
Mar 2025
West metroFound
A car hit the bottom section, knocking the cables off and bending the tracks.
Fixed
Put the cables back on, straightened the tracks, and reinstalled the bottom retainer and rubber.
Feb 2025
Denver metroFound
The rollers and the bottom seal were worn.
Fixed
Replaced 10 rollers with nylon ones and the bottom seal and retainer, adjusted the opener and lubricated the door.
Jan 2025
ArvadaFound
The opener, the bottom seal and the rollers were all worn.
Fixed
Replaced the opener, the bottom retainer and seal, and 10 rollers, then lubricated the door.
Dec 2024
LittletonFound
The bottom weather seal was worn, found during a tune-up.
Fixed
Replaced the seal, adjusted the springs and lubricated the door.
Repair or replace?
A new seal is a small repair. If the bottom section itself is rotted or crushed, we replace the section, and a badly worn older door may be worth weighing against a new door.
Related questions
What are the different types of garage door bottom seals?
The main garage door bottom seal types are T-slot, bulb, beaded, and threshold seals.
Read full answerWhat is the best garage door bottom seal for an uneven floor?
Use a rubber bulb seal or a 4-inch wide T-end rubber seal.
Read full answerHow do I fix gaps on the sides of my garage door letting in cold air?
Side gaps usually mean the stop molding weatherstrip is worn, compressed, or missing.
Read full answerRelated services
Parts mentioned
Seal the gap under your door
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