Garage door panel replacement
Garage door sagging or bowing in the middle?
A sagging section, usually the top one, has lost its stiffness. On most of these jobs we brace it with steel struts rather than replacing it, and fix whatever let it sag.
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Is this what you're seeing?
The top section of the door dips in the middle when the door is open.
The door looks bowed from the inside when it’s up.
Sections are starting to crack or separate at the hinges.
The door is wide, often 16 feet, and the sag gets worse over time.
What's going on
Each door section spans the full width of the opening. When the door is open, it hangs flat overhead, and on wide doors the middle can slowly bow. A strut is a steel brace screwed across the section to keep it straight.
Sagging gets worse when the door is out of balance or the opener pushes on a weak top section. Springs that are the wrong size for the door are one cause we see.
What to do right now
Do
Keep using the door gently if it still opens and closes smoothly.
Look for cracks along the hinges of the sagging section.
Don't
Don’t keep running the door if a section is cracking. It can fail while the door is open.
Don’t try to bend the section back yourself.
How we fix it
Sagging sections fall under garage door panel replacement, but replacing the section is not always needed. Our records show what these jobs involved.
What the work involved
- Struts added12 of 16 jobs
- Springs8 of 16 jobs
- Sagging door jobs since 2018
- 18
Recent jobs like this
Jun 2025
LakewoodFound
The door was starting to sag.
Fixed
Moved the strut from the bottom to the third section, then lubricated and adjusted the door.
Apr 2025
LakewoodFound
The door was sagging and its springs were the wrong size for it.
Fixed
Added three struts, rewound the springs as well as possible, and lubricated the door.
Apr 2025
Denver metroFound
The door was sagging.
Fixed
Added three struts, adjusted the springs and lubricated the door.
Jan 2025
LakewoodFound
A 16x8 door with glass was sagging badly and needed replacing.
Fixed
Replaced both springs and a hinge and roller to keep it running in the meantime.
Dec 2024
WestminsterFound
A car hit the door and its sections were dropping.
Fixed
Straightened the sections as well as possible, added a strut, and recommended a new door.
Feb 2023
WestminsterFound
The top section was sagging.
Fixed
Added struts to brace it instead of replacing the section.
Repair or replace?
Struts are often a good fix for years. If the section is cracked through or the door is old and sagging badly, replacing the section or the whole door is the better long-term answer.
Related questions
What is a garage door strut, and does my door need one?
A garage door strut is a horizontal metal brace bolted across a panel to stop it from bending or sagging.
Read full answerWhy does my garage door bow or warp in the sun?
Thermal bowing happens when direct sunlight heats the outer steel skin of an insulated door while the inside stays cooler.
Read full answerRelated services
Parts mentioned
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