Garage door problems
Garage door hanging uneven or crooked
A UK garage door hanging uneven or crooked is usually a failed cable or spring on one side, a worn roller, or a warped timber or steel panel. On retractable-gear up-and-over doors, each side has an independent spring, so a fault on one side is common. Cable or roller repairs typically cost £90–£250 inc. VAT; a warped panel may need full replacement.
One-sided cable or spring failure
UK up-and-over doors with retractable gear, and sectional doors, rely on matched cables and springs on both sides working together. If one cable frays and slips, or one spring in a pair fails, that side of the door loses lift and drops relative to the other — the door visibly racks or tilts as it travels. This is a mechanical fault and needs an engineer, not adjustment.
Worn or damaged rollers
On sectional and roller doors, individual wheels or rollers running in the side tracks can wear unevenly, especially the bottom rollers which take the most load and moisture exposure. A worn roller lets that corner of the door sag slightly, which shows up as a crooked bottom edge even though the panels themselves are fine.
Warped or damaged panels
Timber side-hinged and up-and-over doors can warp with seasonal moisture changes if the timber wasn't fully sealed on all faces during manufacture — a particular risk in exposed UK weather. Steel panels can bow after an impact. A warped panel makes the whole door sit unevenly in its frame even when the lifting mechanism is sound.
Track alignment
Tracks that have loosened from their fixings, or been knocked out of parallel — for example by a reversing vehicle — will pull the door out of true even with a perfectly good mechanism. This is a track repair/adjustment job rather than a spring or cable one.
| Cause | Typical cost |
|---|---|
| Roller/wheel replacement | £90–£200 |
| Cable replacement | £120–£250 |
| Track repair/adjustment | £100–£220 |
| Spring replacement (pair) | £150–£350 |
| Single panel replacement | £200–£750 |
Prices include VAT. A call-out fee of £40–£80 may apply on top. Which repair applies depends on diagnosis — a single visit usually confirms it.
Step by step
1.Look, don’t operate
From a safe distance, note exactly where the door is lower or tilted — one bottom corner, one whole side, or a bowed panel. This detail helps an engineer diagnose over the phone.2.Check for a visible cable or roller fault
Look for a hanging or slack cable, or a roller sitting outside its track, on the low side.Safety: If the cause turns out to be a cable or spring, do not attempt any adjustment yourself — both remain under tension even in a partial-failure state.
3.Check the tracks are still fixed square
Look for loosened track brackets or visible impact damage, particularly near the bottom of the tracks where vehicles pass closest.4.Stop using the door if it’s catching
A door that is binding as it travels can jump the tracks entirely if forced. Leave it in position and book an engineer.
Questions people ask
- Is it safe to keep using a garage door that’s slightly crooked?
- Only briefly, and with caution — a crooked door under UK operation puts uneven load on rollers, tracks and any surviving cable or spring, which tends to accelerate towards a full jam or a second failure. Book a repair rather than leaving it.
- Can I straighten a crooked garage door myself?
- Track bracket adjustments on a door with no cable or spring involvement can sometimes be done carefully by a competent DIYer, but if the door is uneven because of a cable, spring or roller fault, this is engineer work — forcing an uneven door straight can cause it to jump the tracks.
- Why does only one side of my garage door drop?
- UK retractable-gear up-and-over doors and sectional doors have independent cables and springs on each side, so a fault on one side — a frayed cable, a failed spring, or a worn roller — commonly shows as just that side dropping.
- Will a crooked garage door damage the operator?
- Yes, potentially — an operator repeatedly trying to lift or lower an unbalanced door works harder than designed and can strain or strip its internal drive gear over time. Fixing the root cause protects the operator as well as the door.
UK standards and regulations referenced
- PUWER 1998
Related
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