
Garage Door Spring Replacement
Springs specified from door weight and drum size, then wound to the calculated turns.
View detailsCounterbalance brought back into adjustment on springs that are still sound.

Not every spring problem is a broken spring. A door that runs heavy, holds badly, drifts down from halfway, bangs at the top of its travel or makes the opener strain is usually a counterbalance that has fallen out of adjustment rather than a component that has failed. That distinction matters in Milton, where a large share of the housing is recent enough that the springs are still the ones the builder installed and were set once on installation day and never revisited since. Spring repair is the work of reading the balance, correcting tension, and putting right the fixtures around the spring so the adjustment holds.
A correctly set spring holds its balance for years rather than months, so a door that needs adjusting repeatedly is telling you something else is wrong: an anchor that will not stay tight, a drum that creeps, a spring undersized for the door it is carrying or one approaching the end of its rated cycles. When the reading points that way we say so, because paying to adjust a spring that is at the end of its life is a poor use of your money.
Work through the symptom first — some of these turn out to need no technician at all.
Springs lose a little of their set as they work, and a door that was correctly balanced at handover will read heavy after some thousands of cycles. Nothing has broken; the turns simply need resetting to the door’s actual weight.
When a heavier insulated door replaces a lighter one and the springs are left as they were, the counterbalance has been wrong from day one. We see this on Milton houses where a previous owner had a door swapped without a spring recalculation.
If a drum set screw slips, that side’s cable winds unevenly and the door lifts out of square. The symptom reads as a balance fault, but the fix is at the drum and the cable seating rather than in the spring turns.
The centre bearing plate and spring anchor carry everything into the header. If the fixings have worked loose or the backing behind them has softened, tension will not stay where it is set no matter how carefully it is wound.
A very large share of Milton’s housing is new enough that the original springs are still in place — roughly 73 per cent of occupied dwellings were built in 2001 or later, and whole neighbourhoods went up inside single five-year windows, with 89 per cent of Coates built between 2006 and 2010 and 88 per cent of Willmott between 2011 and 2016. Those doors are now at the age where a first tension correction is due, and households using an attached garage as the main entrance get there sooner because springs are rated in cycles rather than years.
Torsion springs store enough energy to break bones, and the two commonest amateur injuries in this trade both happen at the spring: winding with the wrong tool so a bar escapes, and loosening a set screw with the spring still under load. Neither screwdrivers nor adjustable wrenches are winding bars. Balance can be checked safely by hand with the opener disconnected; adjusting the tension that produces that balance cannot.
With the opener disconnected the door is raised by hand and released at about waist height. Where it holds, rises or falls is the single most informative reading in garage door work and it takes under a minute.
A heavy-feeling door can be an under-tensioned spring or a binding roller path. We check rollers, bearings and track alignment before touching the spring, because winding tension onto a friction problem hides it.
Turns are adjusted with proper winding bars to the door’s measured weight and height, and the bearing plate, anchor fixings, drums and cable seating are checked and secured so the setting holds.
The door is lifted by hand again to confirm it holds where it should, then run under power through a full cycle with the safety reverse and photo eyes verified.

Springs specified from door weight and drum size, then wound to the calculated turns.
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Frayed, slack or jumped lift cables renewed as a matched pair.
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Yearly checks on balance, hardware, seals, sensors and safety reversal.
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Garage Door Spring Repair is available across every Milton 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.