Broken Garage Door Spring Repair

Do not try to lift or force a door with a broken spring. The door can be much heavier than expected, and cables or remaining springs may be under load.

That depends on the system, the springs' age and cycle history, their condition and whether they are a matched pair. The technician should inspect and explain the recommendation rather than apply one rule to every door.

Torsion springs usually sit on a shaft above the door. Extension springs typically run along the horizontal tracks. Both store substantial energy and should be serviced by trained professionals.

The usual signs are observable from several feet away and need no contact with the hardware: a loud bang from the garage with no other explanation, a visible gap of an inch or two in the coil of the torsion spring above the door, an extension spring beside the track that looks stretched out or separated, a door that now feels extremely heavy by hand, and an opener that strains and lifts the door only a few inches before stopping. Cables often go slack at the same moment.

Do not try to. The springs counterbalance almost all of a garage door's weight — a common double door is well over 150 lb — so with a spring broken, that whole load is unsupported. Lifting by hand, or pulling the release and lifting, puts a person directly under a heavy panel that can drop. If a vehicle is inside, treat the vehicle as unavailable and say so in the request.

Treat it as urgent whenever it traps a vehicle you need, leaves the building unsecured, or has left the door hanging crooked or unstable. Where the door is closed, everyone is out and nothing is trapped, it is urgent in the sense that the door must not be operated again — but it can be scheduled rather than treated as an emergency call.

On a two-spring system, replacing both is usually the sensible call rather than a universal rule: the pair have taken the same number of cycles and the same weather, so the surviving one is typically near the end of the same life. Matching them also keeps the door balanced. The exception is a genuinely newer spring on a system where one was replaced recently — which is why the technician should check the age and condition of both rather than quoting a policy.

Springs are rated in cycles — one cycle is one full open and close. A standard residential torsion spring is commonly rated around 10,000 cycles, so a household opening the door four times a day reaches that in roughly seven years, while a busy household with an attached garage as the main entrance can get there in three or four. Cold and coastal-style road-salt corrosion shorten it further; a garage that is the family's front door wears springs faster than a detached garage used at weekends.

The cycle rating is the manufacturer's expected number of open-close cycles before fatigue. High-cycle springs — 25,000 or 50,000 — use different wire and coil dimensions to achieve that, and they cost more per spring. They make sense where the door genuinely runs many times a day: a household of drivers using an attached garage as the main entrance, a shared or rental opening, or a small commercial bay. For a door used a few times a day they are usually not worth the difference.

It can. With the counterbalance gone the opener is being asked to lift the full weight of the door, which it was never sized to do. Repeated attempts can strip the drive gear, burn out the motor or bend the rail. That is the practical reason for not pressing the button again after the bang — the second problem is created by the attempts, not by the original failure.

No. A broken spring is replaced with one matched to the door's weight and geometry; it is not welded, re-wound or patched. What can vary is the specification of the replacement — wire size, inside diameter, length and cycle rating — and matching that correctly to the door is the part of the job that determines whether the door is properly balanced afterwards.

Identifying the door's weight and the correct spring specification, inspecting the cables, drums, shaft, bearings and anchor for damage caused by the failure, replacing the spring or springs, then setting and testing balance and re-checking the opener's travel, force and reversal behaviour. A spring changed without a balance test afterwards is only half the job.

It is not a good plan. Spring selection depends on the door's actual weight, height, drum size and track configuration, not on the appearance or measurements of the broken one, and an incorrectly sized spring leaves a door that is heavy, fast, or badly balanced in a way that wears every other part. Supplying your own part also usually removes any warranty on the component.

Two reasons combine in Vermont. Steel becomes marginally less forgiving as temperature drops, so a spring already near the end of its cycle life is more likely to reach failure on a cold morning than on a mild afternoon. Separately, winter is when doors get used hardest — more trips, more ice at the threshold, more resistance — so the cycles accumulate at the point in the year when the margin is thinnest.

Give the town and property type, say whether the door is open, closed or stopped part-way, and describe the closest match to what you are seeing — for this service that usually means loud bang from the garage, door lifts only a few inches, visible gap in the spring above the door. Photographs taken from a safe distance help. Nothing on that list needs anyone to approach loaded springs, cables or an unstable door.