5 Signs Your Garage Door Spring Is About to Break

Your garage door works dozens of times a week without a second thought — until it doesn't. When a spring breaks, the door can become impossible to open, or worse, dangerous to operate. The good news: springs usually give you warning signs before they fail completely.

Here are five things St. Louis homeowners should watch for.

1. The Door Feels Unusually Heavy

Try this: disconnect your opener and lift the door manually. A properly balanced door with healthy springs should feel nearly weightless — you should be able to lift it with one hand. If it feels like you're lifting a car hood, your springs are losing tension and may be close to failure.

This is one of the most reliable early warning signs, and it's easy to check yourself.

2. You Heard a Loud Bang From the Garage

A snapping torsion spring sounds like a gunshot. Many homeowners hear it from inside the house and assume something fell over. If you heard a loud bang and your door stopped working shortly after, a broken spring is almost certainly the cause.

Don't try to operate the door after this happens — the opener can be damaged trying to compensate for the missing spring tension.

3. There's a Visible Gap in the Spring Coil

Take a look at the torsion spring above your door (the horizontal bar that runs parallel to the top of the door). A healthy spring is a tight, continuous coil. If you see a gap — even a small one — the spring has snapped and needs immediate replacement.

This is a clear sign the spring is broken, not just worn. The door is unsafe to use until it's fixed.

4. The Door Opens Unevenly or Tilts to One Side

Most residential garage doors have two springs. If one breaks and the other is still intact, the door will open unevenly — one side higher than the other, or the door visibly crooked as it moves. You may also notice the cables on one side going slack.

Operating a door in this condition puts serious stress on the opener and the tracks. Stop using it and call for service.

5. The Opener Strains or Reverses Before Closing

Modern garage door openers have built-in resistance sensors. When a spring is failing, the opener detects the extra load and may reverse before the door fully closes, or struggle to open it at all. If your opener sounds like it's working harder than usual, or if the door reverses for no apparent reason, worn springs are a likely culprit.

What to Do If You Notice These Signs

Don't wait for a complete failure. A broken spring is a safety hazard — the door can drop unexpectedly, and a snapped spring under tension can cause serious injury.

Garage Door Monkey offers same-day spring repair across the St. Louis metro area. We'll inspect both springs (not just the broken one), replace them with high-cycle hardware, and test the door balance before we leave.