Welby, Thornton
Torsion spring snapped on your Welby garage door? Thornton Garage Door Pros carries springs sized for the 1970s-era doors built here, 6 miles from our shop.
Watch-outs
Most garage doors in Welby went up around 1974, which puts them square in the middle of the 1960s-70s build wave that covers this whole side of the metro.
That means steel sectional doors, usually a 16x7 double or a 9x7 single, hung on torsion hardware mounted on a horizontal shaft above the opening rather than the side-mounted extension springs you see on older houses further out. The spring itself is a wound steel coil rated to lift that specific door's weight, and after decades of daily cycling and Colorado's swing between summer heat and hard winter cold, the metal fatigues.
What goes wrong is almost always the coil itself: it fractures clean across, usually at a stress point near the winding cone, and the door drops the moment the last coil lets go. Cables can also fray where they wrap the drum once a spring is already weak and the cable is taking load it wasn't built to carry alone.
On a double door, if one of the two springs breaks, the other is now doing twice the work, and it tends to follow within weeks. That's the pattern we see on this housing stock more than any other single failure.
The repair
We measure the door's actual weight and the wire size, coil diameter, and length of the spring that's on it now, because a 1970s door here isn't built to the same spec as a door from the 1990s down the street, even if both look similar from the driveway.
Torsion spring replacement means unwinding the broken spring under controlled tension using winding bars, not guesswork, then setting the new spring to the same number of turns the door needs to balance correctly.
We check the cables and the drums at the same time, since a spring failure often puts extra strain on both, and replacing just the spring while leaving a frayed cable is how you end up back at the same house in a month.
On doors from this era we also check the track alignment, because 1970s track hardware has usually loosened at least once in fifty years of use. If the door is a double and one spring broke, we replace both, even though only one failed, because a spring that's carried extra load for weeks is close behind it.
Local causes
This area sits in a cold-severe climate band, and that matters more for spring life than most homeowners expect. Steel fatigues faster under repeated temperature swings than it does under steady cold, and a Colorado winter gives a torsion spring dozens of freeze-thaw cycles a season, each one flexing the coil slightly differently than a summer cycle does. A spring rated for 10,000 cycles in a mild climate doesn't reliably hit that number here. Welby's median household income, at $78,375, sits below the wider service area's $93,818, and that shows up less in the failures themselves and more in timing: a spring that starts squealing or showing a visible gap in the coil often gets left alone here for another season rather than replaced early, which is reasonable, but it means more of these calls come in as a full break rather than a preventive swap. Across the broader area there are 264,013 households and 108,291 owner-occupied houses, and the concentration of 1958-2010 stock, mostly 1960s-70s builds, means torsion springs from that same era are aging out together rather than in a scattered pattern.
On the truck
We carry torsion springs in the wire sizes and lengths that match 1970s-era doors, since that's the majority of what we're called out for on this side of the service area, along with matched cable sets and standard drums.
What we don't carry for every job is a spring for a nonstandard or custom door size. Welby has enough original garage stock from the 1958-2010 build window that we occasionally hit a door with a spring length or wind direction that isn't a stock item, and on those we have to order it rather than finish same-visit.
That's the honest limit: if your door was custom-built or modified at some point, expect a possible order delay rather than a one-trip fix. For the standard 9x7 and 16x7 sectional doors that make up most of this area's housing, we're equipped to diagnose and replace on the spot, including checking the opener's force settings afterward, since a new spring changes how much lift the opener has to provide.
Warning signs
The most common call is a door that won't open at all, or an opener that runs and strains but the door barely moves, because the spring that used to carry most of the weight is gone and the opener isn't built to lift a garage door on its own. Some owners hear it before they see it: a loud bang from the garage, often mistaken for something falling, which is the spring letting go. A door that slams down hard on the way closed, instead of settling, is a sign the spring is already weak even if it hasn't fully broken yet. A visible gap in the coil, where you can see daylight between windings that used to sit tight, is worth calling about before it snaps rather than after. On double doors, uneven lift, where one side rises faster than the other, usually means one spring is failing while the other is still holding.
Booking
We work out of Thornton, about 6 miles from Welby, so there's a short drive built into every call here rather than a branch on this side of town.
That's worth knowing upfront: we're not claiming a Welby location, just a short trip to get to one. If your door has dropped and won't move, don't try to force it open with the opener, since that puts strain on the opener's motor and gears that they're not built for.
You can see the general range of what we cover for this town on the Welby garage doors page, and if you want the fuller rundown of how we handle spring repair as a service, that's on the Thornton spring repair page.
Call and describe what you're seeing, whether it's a bang, a gap in the coil, or a door that won't budge, and we'll bring the spring stock that matches this area's housing.
Questions
Most houses here were built around 1974, and torsion springs generally last somewhere between 7 and 15 years of daily use depending on the door's weight and how many cycles it sees. If your house still has the original hardware, or you don't know when it was last replaced, a spring from that era is well past due and worth having checked before it breaks.
You can, but we don't recommend it. If one spring broke, the other has been carrying extra load and is usually close behind. We replace both on a double door when one fails, because coming back out for the second spring within weeks costs more than doing it once.
For the standard 9x7 and 16x7 sectional doors common in this area, yes. If your door has a custom or nonstandard spring length, which does turn up occasionally in this housing stock, we may need to order it and come back rather than finish the same day.
A torsion spring under full tension releases all that stored energy at once when the coil fractures. It's a sharp, loud crack, often mistaken for something falling in the garage. If you hear it, the door has likely dropped and shouldn't be forced open with the opener.
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Thornton Garage Door Pros repairs and installs garage doors, springs and openers in Thornton, CO and the surrounding area.
