
Torsion and extension spring replacement
The spring carries the weight of the door, not the opener. On the peninsula the coils are what salt reaches first, so springs here rarely reach the cycle count printed on the box.
What you notice
- A bang like a gunshot in the garage, then a door that will not lift
- A visible gap in the coil, or two clean ends where one spring used to be
- The opener strains, lifts a foot and reverses
- The door feels enormously heavy on the emergency release
What we do
We measure wire size, inside diameter and wound length off the failed spring rather than guessing from door size, wind the replacement to the balance the door actually needs, then re-check that the door holds still at knee height and at shoulder height with the opener disconnected. On doors within a mile or two of the sound we fit galvanised or coated springs, because a bare oil-tempered coil in that air is a repeat visit.






