Why is my garage door off track?

An off track door looks alarming, and it should be treated as urgent, but the cause is usually one of a short list of problems. Here is what knocks a door off its track and what the fix involves.

What causes a garage door to go off track

The rollers ride in a track on each side, held in place by spring and cable tension. When that balance is lost or something forces the door sideways, a roller pops free. The common causes:

• A broken lift cable. When a cable snaps, one side of the door drops and the rollers on that side jump the track. This is the most frequent cause.
• Worn or broken rollers. Old rollers crack or seize, then bind and climb out of the track instead of rolling.
• An obstruction in the track. A stone, a tool, or a built up chunk of ice can derail a roller as the door passes over it.
• A hit from a vehicle or a bump. Backing into the door, even lightly, can knock a panel and pop the rollers out.
• Loose or bent track. Track bolts that loosen over time, or a bent section, let the rollers wander out.
• A broken spring throwing off balance. When a spring fails, the sudden weight shift can pull the door out of square.

In Colorado, ice buildup along the bottom track in winter is a surprisingly common trigger. A door frozen to the slab and then forced open with the opener can rip a roller loose before the motor gives up.

Why you should never force an off track door

A door off track is held up by very little, so forcing it makes things worse fast.

• It can fall. With a roller or cable out, the door's weight is no longer fully supported. Running the opener can drop the door or send it crashing sideways.
• You bend more panels. Forcing a crooked door racks it further out of square and can ruin panels that were fine.
• It is a crush hazard. Hands, feet, pets, and car hoods are all at risk near an unstable door.

Pull the opener's emergency release to disconnect the motor, keep people and cars clear, and leave the door where it is until a tech arrives. If the door is partly open and you need to secure the garage, our emergency garage door repair line can talk you through it.

What off track repair costs

Cost depends on what caused the derailment and what else got damaged when the door came off. A rough guide for the Front Range:

• Simple re-track, no broken parts: about $125 to $250 to reseat the rollers, realign the track, and tune the door.
• Roller or cable replacement plus re-track: about $200 to $400, since the failed part has to be replaced too.
• Bent panels or a bent track section: more, because the damaged part has to be replaced. A single damaged section may be a garage door panel repair rather than a full door.

The biggest cost factor is how long the door was forced after it came off. Catching it early and not running the opener keeps it on the cheaper end. For how to weigh a major repair against replacement, see our guide on whether to repair or replace your garage door.

How to keep it from happening again

Once the door is back on track, a few habits keep it there. Keep the tracks clear of stones, tools, and ice, especially through winter. Have the rollers and cables checked at an annual tune-up, since a worn roller or a fraying cable is what derails most doors. Tighten any track bolts that have worked loose, and never back out of the garage until the door is fully open. Catching a tired cable before it snaps is the single best way to avoid an off track door.

When to call a pro

Re-tracking a door safely means relieving spring and cable tension, reseating the rollers, and squaring the door back up. That work sits next to the springs and cables, which store dangerous energy, so it is not a DIY job.

Our techs across Denver, Lakewood, and the Front Range handle off track doors same-day in most cases. We find the root cause, replace the failed cable or roller, re-track the door, and rebalance it so it does not jump again. Call our 24/7 line at (303) 937-4477 if your door is off its track.