A healthy garage door moves level and sits square in the opening. When one side starts sagging, lagging, or the whole door looks tilted in the tracks, a support part on that side has failed or slipped. This is one to catch quickly. Here is what is going on.
Stop using it first
Before diagnosing, know this: a crooked door is a door that has lost even support, and every cycle risks it binding harder or coming off the track entirely. If it looks visibly tilted or one side has dropped, do not keep opening and closing it — that is how a fixable problem becomes a door jammed sideways in the opening.
1. A broken or slipped cable
The lift cables run down each side and share the load with the springs. If one cable frays through, snaps, or slips off its drum, that side loses support and drops — so the door hangs low on one corner and rides crooked. You may see a cable dangling loose or wrapped wrong on the drum. Cables are under high tension right alongside the springs, so this is cable repair for a pro, not a DIY.
2. An off-track roller
If a roller has jumped out of its track — from a worn roller, a loose bracket, a bent track, or bumping the door — that corner is no longer guided and the door goes cockeyed. You will usually see the roller sitting outside the track or the door pinched against the frame. Do not force it back by cycling the opener; see off-track repair and consider fresh rollers as part of the fix.
3. A spring issue (on a two-spring door)
On doors with two torsion springs, if one weakens or breaks, that side lifts weaker and the door can rise unevenly — lagging or tilting toward the bad spring. Combined with a heavy feel, that points to spring repair. Again, high tension — a pro job.
4. A bent track or loose bracket
A track knocked out of alignment or a mounting bracket that has worked loose lets one side wander, so the door drifts crooked over time. Sometimes this is what threw the roller in the first place. A tech will realign the track and re-secure the hardware as part of putting things right.
The common thread: call a pro
Cables, springs, off-track rollers, and bent tracks all share two traits — they involve high tension or precise alignment, and running the door makes them worse. The safe move with a crooked door is to leave it be and have it looked at before it fully derails. If you are stuck inside or out, the manual-release guide can help — carefully, since the door may be unbalanced.
Key takeaways
- A crooked door has lost even support — stop using it before it derails.
- Common causes: a broken cable, an off-track roller, or a spring issue.
- A dropped corner with a loose cable usually means cable failure.
- A roller sitting outside the track means the door is off-track — do not force it.
- Cables, springs, and re-tracking are all high-tension pro jobs.