Missoula, MTMissoula, MT
Broken torsion spring on a Missoula garage door? We explain why cold winters and 1980s-90s housing stock here wear springs out faster, and what a safe repair involves.
Watch-outs
A broken spring is never just a broken spring. On a double door, the torsion spring on the side that failed has usually been carrying more than its share of weight for weeks before it finally lets go, which means the other spring on that same shaft is close behind it.
We see this constantly on the housing built across this area from the 1980s and 90s, where the original spring sets are now 30-plus years old and were sized for the door as it shipped, not for the heavier insulated replacement panel somebody swapped in ten years later.
The complication is that a spring job looks simple from the driveway and isn't. Torsion springs store enough force to break a wrist or worse if the winding bars slip, and the drums, cables, and bearing plates around the spring all wear on the same clock.
Replace one part and ignore the rest, and you're back under that door again within a year. We size springs to the actual door - its height, width, and current weight - not to a sticker that may not match what's hanging there anymore.
Local causes
Missoula sits in a severe cold climate band, and that matters for spring life more than most homeowners expect. Steel torsion springs lose tension cycling through hard freezes, and the lubricant inside the coil thickens in cold garages, which adds drag right when the spring is already working harder to lift a door that's picked up moisture weight in the track. Add in a housing stock built mostly between 1976 and 2013, with the bulk from the 1980s and 90s across the eight areas we work in, and you've got thousands of doors hitting the same spring lifespan window at roughly the same time. A torsion spring is rated in cycles, not years, and a door opened twice a day for three decades in this climate has used up what it had. That's why spring failure here tends to cluster by neighborhood build era rather than by random bad luck - whole blocks of houses put up in the same five-year stretch start calling for the same repair around the same winter.
Warning signs
The door that won't budge, or budges an inch and stops, is the obvious one - that's a fully snapped spring and the opener is fighting a door it can't lift alone.
Less obvious: a door that's suddenly loud, with a popping or scraping sound partway through the cycle, which often means a spring has lost tension but hasn't broken clean yet. Some owners notice the door feels heavier when they lift it by hand during a power outage, or that the opener strains and reverses before the door reaches the floor.
On older torsion setups common in this area's 1980s and 90s builds, a visible gap in the spring coil - a clean break you can see from below - is the clearest sign and the one that means stop using the opener immediately.
Running a garage door opener against a broken spring puts the full load on the opener's drive gear, and that's a second repair bill stacked on top of the first.
DIY or pro
We'll say this plainly: don't wind or unwind a torsion spring yourself. The bars and force involved aren't like changing a tire, and a slipped winding bar under that much tension has put people in the hospital. Where a homeowner can reasonably help themselves is in the diagnosis - checking whether the cable looks frayed, whether the gap in a broken spring is visible, whether the issue is actually the opener and not the spring at all, since a bad limit switch can mimic the same symptoms. That's worth five minutes with a flashlight before you call anyone. Beyond that, a full honest limitation: we don't stock every spring size on the truck for every door built across this area's range of eras, so some jobs on older or unusual doors need an order and a second visit. We'll tell you that on the first call, not after we've shown up.
Questions
If the door won't move at all, or moves a few inches under opener power and stops, suspect the spring first - the opener isn't built to lift a door's full weight alone. Look at the spring itself: a clean visible gap in the coil above the door means it's broken. If the spring looks intact and the door just reverses or clicks, the issue is more likely the opener or a limit switch.
Missoula's cold winters stiffen the lubricant inside torsion springs and the steel itself loses tension faster cycling through hard freezes. Combined with a door that's picked up extra moisture weight in the track, a spring that was already near the end of its rated cycle count often gives out in the cold months rather than in summer.
Usually no, if the spring is the only failure - a spring job is far less than a door replacement. It becomes a different conversation when the door itself is original to a house built decades ago and the panels, track, or hardware are failing alongside the spring, at which point replacing the door can make more sense than repairing it piece by piece.
We don't recommend it. Torsion springs on a double door are almost always installed as a matched pair, and if one failed from age or cycle count, the other is usually close behind it. Replacing both at the same time means one visit instead of two and even tension across the door.
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Missoula Garage Door Pros repairs and installs garage doors, springs and openers in Missoula, MT and the surrounding area.
