Portland, OR · Garage Door Service
Broken torsion spring on your Portland garage door? We explain what's failing, why it's common in homes built 1964-2006, and how we fix it right.
If the door won't budge, or it slams down the last foot of travel instead of easing shut, you're almost certainly looking at a broken torsion spring, not a bad opener. The giveaway is usually a loud bang from the garage at some point before the trouble starts - that's the spring letting go under tension. You might also notice the door feels twice as heavy when you lift it by hand, or one side of the door hangs lower than the other because only one spring on a two-spring setup gave out.
On older double-car doors around Portland, you'll sometimes find a single center spring instead of two - that's original equipment from the 1960s-80s building wave, and it fails the same way but leaves the door completely dead instead of just heavy. Either way, the cable usually goes slack at the same time, and that's the part that tells you not to force the door with the opener - you can bend a track or drop the door on a car doing that. This is a wound-steel-under-tension repair, and it's the single most common call we take.
We'll say it plainly: don't. A torsion spring on a residential door is wound under several hundred pounds of tension, and the tools to wind or unwind it safely - proper winding bars, a vise-mounted setup, the spring rated to your door's weight and drum size - aren't something most homeowners keep in the garage. People get hurt doing this, and it's not a close call.
What you can safely do yourself: confirm it's actually the spring and not the opener by disconnecting the trolley and lifting the door by hand. If it's dead weight or wildly unbalanced, that's your answer. You can also check whether the cable has come off the drum, which sometimes happens alongside a spring break and looks similar from a few feet away. Beyond diagnosis, this is a call-a-pro job, and the honest reason is the tension involved, not the difficulty of turning a wrench.
We match the replacement spring to your door's actual weight, width, and drum size rather than swapping in whatever's closest - undersized springs fail again in a year or two, oversized ones strain the opener and hardware. On a two-spring door we replace both sides even if only one broke, because the surviving spring has been carrying uneven load and is usually close behind.
We check the cables, drums, and the bearing plates supporting the shaft while we're in there, since a spring failure often stresses those parts too. Then we balance the door - it should hold at waist height under its own weight with the opener disconnected - and cycle it a few times before we call the job done. Doors built in the 1980s and 90s, which make up a lot of what we see across Portland, sometimes have hardware that's been re-drilled or shimmed over the years; we won't force a modern spring onto mismatched brackets, we fix the bracket first.
Portland's housing stock runs mostly 1964 to 2006, with the median build year landing around 1982, and that matters here specifically: a huge share of the doors we service are original or one generation removed from original, meaning the springs are past or well into their expected cycle life. Across the neighborhoods we cover - Lloyd District, Buckman, the Pearl District, Concordia, Mount Tabor, Cully, and dozens more out to Hillsboro and Canby - that same 1980s-90s hardware shows up over and over.
Climate plays a part too. Portland sits in a mild band with occasional freeze, and that swing - not brutal cold, just enough temperature change through the year - flexes the steel a little on every cycle. It's not dramatic the way a hard freeze-thaw region is, but over 20-plus years it adds up to fatigue. With 101,547 owner-occupied houses across the service area, a lot of them built in that same window, spring failure ends up being one of the most predictable repairs we run, not a random breakdown.
We don't have a fixed number to publish because it depends on whether you've got one spring or two, the size of the door, and what shape the drums and cables are in. We give a firm price on the truck before any work starts, once we've actually looked at the door.
On a single-spring door, obviously it's just the one. On a two-spring door, we replace both even if only one snapped - the other has been under uneven load and is usually close to failing too. Replacing just one often means a second service call within a year.
Torsion springs fail by fatigue, not by a single event. They're rated for a certain number of open-close cycles, and once you're past that, they can go on any ordinary lift. Houses in Portland's 1980s-90s building wave are hitting that point now.
Rarely for a spring alone - that's a straightforward repair. It becomes a replacement conversation only if the spring failure damaged the track, panels, or an aging opener at the same time, which we'll tell you honestly if we see it.
Call now or request a free quote - same-day service on most repairs, upfront written pricing.
