Sound familiar?Longmoor
- The call
- You heard a sharp bang from the garage, and now the opener hums for a second and gives up. The door lifts a few centimetres at most, then settles back down as if something very heavy is holding it in place.

Looking up at the coil above the door, you can see a clean split with a gap of several centimetres between the two halves. The rest of the spring looks fine, but the door has become almost impossible to move by hand.
The heart of this service is matching, not just swapping. Two springs can look identical and behave very differently, because the force a torsion spring produces depends on its wire thickness, inside diameter, length and wind direction, and the right combination depends on the door's weight, height, drum type and track lift. The technician measures all of those before choosing a spring, then confirms the choice the only way that counts: lifting the finished door by hand and feeling it stay put at waist height. A properly matched spring lasts longer and keeps the opener working easily.
Sound familiar?Longmoor
Torsion Spring Replacement · Longmoor

Scene 1
The first measurements come from the spring that is already on the shaft. The technician measures wire thickness across a run of ten or twenty coils, the inside diameter of the coil, the overall length of the spring when relaxed, and the wind direction, which is read from how the coils lean. On a two-spring door each spring is checked separately, because a left-wound and a right-wound spring sit on either side of the centre bracket. Any tag or colour marking is noted too. These numbers narrow down what the door was built with, and together with the door's weight they point to the correct replacement.
Scene 2
Once the clamps are off, the technician lifts the door by hand to about waist height and lets go. A balanced door stays where it is, or drifts only slightly. If it rises on its own, the spring has a little too much tension and is eased a quarter turn; if it drops, a quarter turn is added. The door is then run through its full travel, watching that both sides move together and the sections stay flat in the tracks. This is repeated until the door feels light and stops cleanly at several heights, which is the standard the whole job is measured against.
Scene 3
A balanced door is also a door you can operate safely by hand when the power is out. Pull the red release cord with the door closed to free the trolley, then lift the door with both hands on the handle or the bottom section; it should rise smoothly and stay open at full height. To re-engage, pull the cord toward the door until the trolley clicks back onto the carriage, or simply run the opener, which reconnects on most models. Because the spring now carries the weight, this is light work, and it is the recommended way to get a vehicle out during an outage.
What shapes the quoteDynes Garage Door Experts
FeesSame any hour
Low-headroom garages use a different arrangement: the spring assembly may be mounted at the rear of the horizontal tracks, or special low-headroom drums and track bring the door up with less clearance. Replacement follows the same principles, but the drums, cable routing and turn count differ. The technician identifies the system on arrival and brings hardware that suits it, so the door balances correctly in the space available.
Cold makes steel slightly less forgiving and thickens the grease on the coils, so a spring that has already used most of its cycle life is more likely to let go on a frosty morning when the door is first opened. The cold is the final straw rather than the cause; the underlying reason is fatigue from years of cycles, sometimes helped along by rust and dry coils.
Oil-tempered springs are the traditional dark grey or black coil; they hold their tension well over time and are widely used. Galvanized springs have a zinc coating that resists rust, which is useful in damp garages, though they tend to relax slightly and may need a small adjustment after settling in. Both are available in standard and high-cycle ratings, and the technician can explain which suits your garage.
HaltonOntario
Torsion Spring Replacement · Burlington, Dynes, Elizabeth Gardens, Orchard, Port Nelson, Roseland, Strathcona Gardens
Every square is one home in a hundred.
On-site assessment
Looking up at the coil above the door, you can see a clean split with a gap of several centimetres between the two halves.
(289) 816-2884, open 24/7.
On-site assessment preferred · (289) 816-2884, open 24/7