Springs · London
Torsion Spring Replacement
After pulling the red release cord, you tried lifting the door yourself and it would barely leave the floor. A door that used to glide up with one hand now takes real effort, which points to the counterbalance rather than the opener.
Torsion Spring Replacement
In plain words
The finished result is a door that behaves the way a good garage door should: it lifts by hand with light effort, stays where you leave it at mid-height, closes softly and lets the opener run with little strain. Reaching that point involves measuring the door, choosing a matched spring, winding it to the correct turns and testing the balance through the full travel. The technician then runs the opener's reversal test and lubricates the moving parts. You are left with a record of the spring installed, so future service starts from known specifications.
How the visit goesOn a cold morning the remote does nothing useful: the light comes on, the motor turns briefly, the door stays shut. There may be a fresh crack in a rusty coil, and flakes of orange on the floor below the shaft.
London
How the visit goes
Checking what the spring anchors to
A torsion spring pushes against a centre bracket bolted to the header above the door, and that anchor takes the full reaction force every cycle. The technician checks that the bracket is fastened into solid framing with proper lag bolts, that the header wood has not split or softened with moisture, and that the end bearing plates on each side are square and tight to the jamb. Loose or corroded fasteners are noted for replacement. A sound anchor keeps the shaft level and the spring pulling straight, which protects both the new spring and the bearings that carry it.
The replacement from start to finish
With the door clamped and the opener disconnected, the technician releases any tension left in an intact spring, loosens the drum set screws and slides the drums inward, then removes the old spring from the shaft. Bearings are inspected while the shaft is free. The new spring goes on with its stationary cone bolted to the centre bracket and the winding cone facing the drum. Drums are refitted, cables seated, the shaft levelled and cable tension evened on both sides. Winding follows, then the set screws are seated and the clamps come off for a balance check. Each stage is done deliberately and in order.
A door that carries its own weight
The clearest change is in your hands: with the opener released, the door lifts with light, even effort and holds its position at mid-height instead of sliding down. That is what a balanced counterweight feels like. The door closes softly at the floor and rises without hesitation, and the opener runs with a calmer sound because it is guiding the door rather than hauling it. You can test this yourself any time by pulling the release cord with the door closed and lifting to waist height; a door that stays put is a door in balance.
Torsion Spring Replacement
In the van
- Torsion springs, oil-tempered or galvanized
- Stationary cone bolts and nuts
- Locking pliers for the track
- Lift cables
- Cable drums
What affects the quote
Same fees day, night or weekend
1Spring finish
Oil-tempered and galvanized springs suit different garages. A coated or galvanized spring for a damp or salt-exposed space is a choice the customer can make when the specification is discussed.
2One spring or two
A single-spring door needs one spring; a paired system is usually replaced as a matched set of left- and right-wound springs. The number of springs and whether both are replaced is the largest single influence on the scope.
3Access and working space
A vehicle that stays inside, shelving under the shaft, a very high ceiling or a tight side clearance affects how the technician sets up and how long the visit runs.
Torsion Spring Replacement: questions
If only one spring broke, should both be replaced?
On a two-spring door both springs have completed the same number of cycles, so the intact one is usually close to the end of its life as well. Replacing the pair gives the door two matched springs sharing the load evenly and a fresh cycle count on both sides. The technician looks at the remaining spring's condition and the door's configuration, then explains the reasoning so you can choose the scope with a clear picture.
Will the new spring look the same as the old one?
Not necessarily, and that is fine. The paint colour on the winding cone or coil is a code that identifies wire size and wind direction, and different suppliers use their own schemes, so a matched replacement can carry a different colour than the spring it replaces. What matters is that the wire size, diameter, length and wind direction suit the door's weight and height, which is confirmed by the balance test.
My car is inside the garage; how do you get the door open?
Once the technician is on site, the door is secured and the spring replaced with the door in its closed position, which is how spring work is always done. When the new spring is wound and the door balances, it lifts normally and the vehicle drives out. There is no need to force the door open beforehand; leaving it closed keeps the door square and the job straightforward.
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Torsion Spring Replacement near you
Every garage door service we offer in London is described the same way: what you might have noticed, what the technician checks first, how the work is done and what you have afterwards. Start with the symptom you are seeing and the right service will be easy to find.