
Garage Door Spring Repair
Tension and balance reset on intact springs so the door stops fighting the opener.
View detailsBroken or fatigued springs replaced as a matched pair and re-tensioned to the door.

When a spring has actually broken there is no repair path. The wire has fatigued and separated, usually with a bang loud enough to be mistaken for something hitting the house, and the door is now its full weight with nothing holding it. Replacement means new springs sized to the specific door rather than to what happened to be on the van: correct wire diameter, inside diameter, length and wind direction, fitted as a matched pair and wound to the tension that door needs. Doing that properly is what makes the difference between a door that lasts and a door that comes back.
New springs restore the counterbalance to what the door actually needs, and matched pairs then age together rather than one carrying the other. Life expectancy depends on cycles, not calendar years, so a household that uses the garage as its main door should expect a shorter interval than one that uses it for a car twice a day. Higher-cycle springs are available where a door is used heavily and the geometry allows them, and that trade-off gets set out openly. What does not get done is replacing one spring of a pair to save a little now and unbalance the door for the rest of its life.
Work through the symptom first — some of these turn out to need no technician at all.
Springs are rated for a number of open-and-close cycles, and every cycle works the wire a little. Reaching that rating is the normal, expected end of a spring's service rather than a defect.
A spring wound for a lighter door works harder on every cycle and fails early. It happens most often when an uninsulated door was replaced with a heavier insulated one and the original springs were reused.
Rust pits the wire surface and each pit is a place a crack can start. Unheated garages with damp floors and salt carried in on vehicles are the usual setting for it.
Low temperatures do not break a sound spring, but they contract the steel and stiffen everything around it, which is why a spring near the end of its life so often gives up on the coldest morning of the year.
Two Newmarket patterns drive most of the replacement work here. The first is cold: with a January mean around minus 7.4 degrees and a mean daily low near minus 11.1, a spring already at the end of its cycle life very often fails on a January morning rather than in July. The second is retrofit history. Bristol-London and the other 1970s and 80s suburbs are full of wide two-car doors, and where an original uninsulated door was swapped for a heavier insulated one without re-springing, the springs have been overloaded on every cycle since. Both cases end the same way, and both are worth catching at the balance-check stage instead.
This is the single most dangerous routine job on a residential garage door. A wound torsion spring stores enough energy to break bones, and the bottom brackets remain under full tension even when the door is open. Do not attempt to remove, install or wind springs, and do not remove a bottom bracket or a winding cone set screw. If a spring has broken with the door up, keep everyone clear and do not pull the release cord. If it broke with the door down, leave it down. Send the details through the form and let the door stay where it is.
The door is weighed or calculated, the drum size and track radius noted, and the existing spring measured for wire, inside diameter and length. Springs are then specified to the door rather than matched to whatever was there.
Remaining tension is let down under control with winding bars before anything is loosened. The failed spring, and its partner, come off with the shaft supported and the door secured.
Both springs are replaced together so the pair shares load and remaining life evenly. Bearings, the centre plate and the anchor backing are checked and replaced where worn while access is open.
Springs are wound to the calculated tension, drums set with equal cable wraps, and the door tested by hand for hold and level travel before the opener is reconnected and its force settings reviewed.

Tension and balance reset on intact springs so the door stops fighting the opener.
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Frayed, slack or unwound lift cables renewed so the door travels level again.
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Fast help for doors stuck open in the cold, jammed shut, or hanging out of square.
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Garage Door Spring Replacement is available across every Newmarket neighbourhood inside the area below.
Map data © Google. Pin shows the service area, not a walk-in location — all work is done at your home.

A real callout, not stock imagery.
A sectional door pulled off its tracks, taken down and supported on site so it could be checked and re-hung safely — photographed on the job.