Garage Door Off Track? Why It Happens and What's Safe to Do

Question 01

Why did my garage door come off its track?

A garage door usually comes off its track for one of four reasons. A car or trailer bumps the door or the track. A worn roller jumps out. A cable lets go and one side drops. Or loose brackets let the tracks drift out of line, until a roller has nothing left to run in.

• A knock. Reversing into a door that isn't fully open, or catching the track with a trailer or bike, can bend the track or push the door out of it.
• Worn or seized rollers. On a sectional door, each panel rides on rollers in the side tracks. A cracked or stuck roller can climb out.
• A slipped or snapped cable. On a sectional door, a cable lifts each bottom corner. If one goes, that side drops and the door hangs crooked or jams.
• Loose fixings. Steel-Line says bolts, nuts, hinges and brackets can work loose with normal wear, and that loose parts can let the door come off its tracks.
• Dirt and grease in the tracks. B&D says grease attracts grime and can make the door stick, and a sticking door strains everything that holds it in line.

Sometimes it's two things at once, such as a worn roller that finally jumps when the car bumps the door. Whatever the cause, the fix starts with keeping clear. If the door is jammed but still sitting in its tracks, garage door won't open or close walks through the other common faults.

Question 02

Is a garage door off its track dangerous?

Yes. A garage door off its track is heavy, out of balance and still under spring tension, so it can shift or drop without warning. Steel-Line says a roller door's weight can approach or exceed 150kg, and that the forces in its springs are generally equal to the door's weight. Treat it as an emergency.

When a door runs properly, the tracks or guides keep it square and the springs carry most of its weight. Once part of the door is out of its track, the load sits unevenly. One side may hang lower, a panel may be twisted, and the springs and cables may be holding the door at an angle they weren't built for.

B&D's owner advice is blunt. If a door has slipped off its guide rails, don't try to lift it back on yourself, because the springs or cables may be broken and could put you in danger. Steel-Line adds that if a spring breaks while it's wound or stretched, those forces are released violently.

Question 03

Does a roller door come off track differently to a sectional door?

Yes. A roller door is one curtain that slides up side guides and rolls around a drum above the opening, so it tends to jam, run crooked or bunch in a guide. A sectional door is hinged panels on rollers in tracks that curve under the ceiling, so rollers pop out of the track or the door hangs crooked.

B&D's Roll-A-Door install guide lists a door jamming in its guides as a reason a roller door is hard to run, and guides that aren't plumb as a reason it rolls up crooked. Not sure which door you have? The roller, sectional and tilt door guide shows the differences.

Question 04

What can I safely do tonight if my door has jumped its track?

Make the area safe and leave the door itself alone. Stop the opener from running, keep everyone clear, secure the house from the garage side and call. Don't pull the release cord, don't lift or push the door, and don't try to straighten the track. Those jobs are where people get hurt.

1. 01Stop pressing the remote or the wall button. Turn the opener off at the power point so nobody runs it by accident.
2. 02Put the remotes somewhere the kids can't reach them, including any in the car.
3. 03Keep people, pets and cars well clear of the doorway and the sides of the door.
4. 04Lock the internal door from the garage into the house, if you have one.
5. 05Take a photo of each side of the door from a safe distance. It helps the technician know what to expect.
6. 06Call a garage door technician. A door hanging off its track counts as an emergency.

Question 05

Can I put a garage door roller back in the track myself?

On a door that has come off its track, no. The roller is carrying part of the door's weight, and the springs and cables are still under tension. Steel-Line's owner manual says all maintenance or repair except inspection and cleaning must be done by qualified door service people. Getting a door back on track is repair work.

Plenty of online videos show someone clamping the door, levering a roller back in and tapping the track straight. They rarely show what happens when a cable has slipped or a spring has gone, which B&D warns may be the case on a door that has slipped off its rails. The door can drop or swing as soon as the load shifts.

Getting a door back on its track means taking its weight off safely first. That takes the right tools and the training to know how much tension is still in the springs, which is why it's a technician's job.

Question 06

What does a bent garage door track mean?

A bent track often comes from a knock, such as a car reversing into the door. Even a small kink can make the rollers bind, stall or jump out, and the opener will keep pushing against it. Stop using the door until the track is checked, because a bent track can let the door come off.

B&D tells owners to check that the tracks are aligned, with no bending, and that the mounting brackets and bolts are tight and undamaged. Look from a safe distance. If you can see a dent, a kink, or a gap between a roller and its track, leave the door shut.

Don't let the opener muscle the door past the bend. Merlin's opener manual says not to let the opener make up for a door that binds or sticks, and that a sticking or binding door must be repaired. Thom does garage door repairs across the Sunshine Coast, including bent tracks and worn rollers.

Question 07

Why does my garage door keep coming off the track?

A door that keeps coming off its track has a cause that hasn't been fixed. It can be worn rollers, loose brackets, tracks out of line, or a door out of balance from tired springs or a stretched cable. Putting the door back without finding the cause means it'll jump again, often at a worse moment.

The makers' care advice points to the same habits that keep a door in its tracks:

• Inspect the tracks on both sides and keep them clear of debris, leaves and rust, as B&D recommends.
• Keep grease and oil out of the tracks. Steel-Line says grease in tracks attracts dirt and dust that builds up and stops the door running smoothly. B&D's Roll-A-Door guide says not to grease roller door guides.
• Watch the brackets. Steel-Line says if you see any movement in the brackets, don't use the door, and call a professional.
• Book a service. Steel-Line recommends preventative maintenance at least every six months, and more often if conditions warrant.

A garage door service checks the rollers, tracks, brackets, cables and spring balance in one visit, so a worn part is found before the door jumps.

Question 08

How does a technician get the door back on its track?

Thom takes the load off the door safely, gets it back on its track, and then checks what let it happen, which is usually a worn roller or a loose cable. Any bent track or worn rollers are replaced, so the door doesn't jump again. It's booked as a repair callout, valued between $200 and $300.

Repairs and servicing are booked as a callout valued between $200 and $300, depending on the door size and the labour involved. The damage decides how big the job is. He's fully insured (public liability) and does every job himself.

A door hanging off its track, a car stuck inside or a garage that won't shut can't wait for morning. Thom does 24/7 emergency garage door repairs across the Sunshine Coast. Call 0402 882 653 and describe what the door is doing.