One flat bang overnight and the door will not lift. The spring is what cancels the door's weight, and when it goes the opener cannot take over.

A broken torsion spring is the fault we are called out for most often in Kent, and it is the one homeowners least expect. Nothing wears visibly, nothing sounds wrong, and then one morning the door will not lift and the car is shut in. Around East Hill and Panther Lake we see it concentrated in split-levels and 1980s tract homes with two-car attached garages, where constant damp swells wooden panels and rusts spring coils.
The spring is not what lifts the door - it is what cancels the door's weight. A double steel door weighs between 130 and 190 pounds, and an insulated one more. Wound tight, the spring stores almost exactly that much energy, so the door behaves as though it weighs nothing and a half-horsepower motor can move it. When the spring breaks, that cancellation disappears at once and the full weight lands on the opener, which is not built to lift it.
We cover Kent and the towns around it - Renton, Auburn, Federal Way, Tukwila - and the price goes in writing before any work starts. There is no charge for coming out to look, and no charge if you decide against the quote.
The sound is unmistakable if you were home for it - a single flat bang, like a heavy book dropped on a concrete floor. Most people are asleep when it happens, because the metal contracts as the garage cools overnight and that is when a spring at the end of its life gives up.
If any of that matches, a technician can diagnose it on site in about ten minutes. We do not guess at it down the phone, and we do not charge to look.
A residential torsion spring is rated in cycles, not years. The standard spring supplied with most doors is a 10,000-cycle spring, and one cycle is one trip up and one trip down. A household that opens the door four times a day uses about 1,460 cycles a year, so the arithmetic gives seven years. A household with two working adults and a teenager can double that rate and see the spring go in three.
Springs come in a specific wire gauge, inside diameter and length, and the three together have to match the door's weight. A spring that is close but not right will lift the door and then fail early, which is why we measure the old spring and weigh the door rather than fitting whatever is on the van.
On a two-spring door both springs went up on the same day and have done the same work since. When one breaks, the other is not fine - it is at the same point in the same life, typically weeks from the same end. That is why the estimate shows both. Take one if you prefer, and the second call-out is on you rather than a surprise.
None of this involves touching anything under tension, and all of it makes the phone call shorter and the estimate more accurate. Two minutes in the garage with the door down is enough.
Whatever you find, do not try to correct it. The value is in the description you give us, not in the repair - a technician arriving in Kent who already knows what failed arrives with the right part on the van.
A quote is only comparable if you know what is in it. This is what a broken garage door spring repair in Kent covers, every time, whether the invoice is large or small.
None of that is optional or extra. It is what the job is, and it is why we would rather quote in writing on site than call out a number over the phone.
Almost every residential door in Kent is standard torsion hardware, and standard hardware is what the van carries. Two exceptions come up often enough to be worth naming: Wayne Dalton's TorqueMaster, where the spring lives inside the tube, and the direct-drive European heads.
| Brand | Notes |
|---|---|
| Craftsman | Built on Chamberlain internals for most of their production run, so the gear kits and boards are shared and readily available. |
| Wayne Dalton | The TorqueMaster counterbalance is a spring inside the tube rather than on it, and it needs its own tools and its own parts. We carry them. |
| Sommer / Marantec | Less common here, direct-drive heads, and the parts have to be ordered - so we confirm the model before the van is loaded. |
| Chamberlain myQ | Wi-Fi hubs and the app side fail more often than the mechanics do. Usually a re-pair rather than a replacement. |
| Amarr | Sections and hardware are widely available and the tracking is standard, which keeps repair costs sensible. |
| Overhead Door / Raynor | Standard torsion hardware on the residential lines - nothing unusual to source. |
If yours is not there, it is almost certainly still standard torsion hardware. Read us the badge on the door or the model number off the opener when you call and we will confirm before the van is loaded.
We cover the whole of Kent, including East Hill, Panther Lake, Meridian, Kent Valley, Scenic Hill, West Hill, and the towns around it - Renton, Auburn, Federal Way, Tukwila.
Just outside that list is still worth a call. Most of King County is inside the normal radius, and we will tell you honestly on the phone if you are not rather than booking you in and cancelling later.
This is the one repair on a garage door that genuinely hurts people. A wound torsion spring holds enough energy to break the bones in a hand, and the winding bars have to be held against that load while the set screws come loose. It is not a matter of being careful. It is a matter of having the right bars, the right cone, and having done it enough times to know how the load moves.
Doing nothing is genuinely the right move here, which is not advice people are used to getting. A door that has already failed does not deteriorate sitting still; it deteriorates every time somebody presses the button to see whether it is still broken.
The one exception is getting a car out. Release the opener with the door fully closed, lift with your legs, and stop immediately if it feels heavy - heavy means the counterbalance is not working and the door will come back down on its own.
Anyone can quote this job blind. What they cannot do is know which of these apply to your door, which is why our estimate happens in your garage rather than on the phone.
| Factor | Why it matters |
|---|---|
| One side or two | Two-spring doors age together. Doing one now and one in a month means paying the labor twice. |
| Door weight | A single door, a double, and an insulated double are three different spring specifications. The technician weighs or calculates it rather than eyeballing it. |
| Cycle rating | A 10,000-cycle spring and a 25,000-cycle spring are different parts at different prices. On a door opened six times a day the second one is the cheaper choice over its life. |
| Torsion versus extension | Older doors with springs along the side tracks are a different job, and safety cables are non-negotiable on them. |
| Door age | On a door old enough that panel sections are no longer made, we will say so before you spend on a spring. |
That is the whole list. There is no separate call-out, no diagnostic charge and no paperwork fee waiting at the end of it.
Work in one area long enough and the pattern stops being anecdotal. In King County the calls cluster: constant damp swells wooden panels and rusts spring coils, and the parts that carry load are the ones that feel it.
East Hill and Panther Lake send us different jobs from West Hill, because the garages are different ages and different builds. That is not a marketing line - it decides what goes on the van before the first call of the day.
It is also the honest argument for a local technician over a national dispatch number. A call center auctions the job to whoever bids, and the van that arrives is carrying whatever it happened to be carrying. Ours is stocked for Kent.

Constant damp swells wooden panels and rusts spring coils. Split by component, the effect is not evenly distributed:
| Part | What the local climate does to it |
|---|---|
| Torsion spring | Surface corrosion removes section, stress concentrates there, and the spring fails short of its cycle rating. |
| Lift cables | Rust starts at the bottom bracket end, closest to the floor, and works up the lay of the wire. |
| Rollers | Grit and moisture together destroy unsealed bearings; sealed nylon rollers are largely immune. |
| Bottom seal | Hardens, cracks, and stops sealing - after which the weather is inside the garage rather than outside it. |
| Opener | Suffers indirectly. Every one of the above makes the door heavier to move, and the nylon drive gear is what pays for it. |
None of it is exotic and none of it needs a special product. It needs looking at twice a year, which is the part most people in Kent skip.
It is worth knowing how the other model works, because it explains most bad experiences with garage door repair.
A national number takes your details and sells them, sometimes to several contractors at once. Whoever calls you first has paid for the privilege, and that cost is in your invoice before anybody has looked at the door. It is also why the price on the phone and the price on the driveway are often different numbers.
We are the people who turn up. The number on this page reaches somebody who can book the van, and the technician who arrives is the one who quoted it.
The practical difference in Kent: an arrival window you can plan around, a written estimate that costs nothing, and a fixed price agreed before any tool comes out.
Yes, in writing, on parts and labor. If the same fault returns inside the warranty period we come back and put it right at no charge.
Count the trips rather than the years and the failure stops looking random. One cycle is up and down once; the spring most builders fit is good for ten thousand of them. Two cars leaving and returning on a weekday is four cycles, plus the school run, plus the trash cans - call it six. Six a day is 2,190 a year, which spends a ten-thousand-cycle spring in under five. Nothing has gone wrong when it breaks. It has simply been used up.
Yes - LiftMaster, Chamberlain, Genie, Craftsman, Clopay, Amarr, Wayne Dalton and the rest. The mechanisms are common across brands and we carry parts for all of them.
Usually, yes. We hold same-day slots for Kent and the surrounding towns, and a door stuck open or a car shut in goes to the front of the list.
Yes - Renton, Auburn, Federal Way, Tukwila and the wider King County area are all inside our normal service radius.
If a spring or cable has failed, no. Leave it down and do not force it. The counterbalance holds a great deal of stored energy and it can let go without warning.
Tell us what the door is doing, what it sounds like and roughly how old it is. That is normally enough to know what has failed and what the van needs to bring.
The visit is free, the written estimate is free, and there is nothing to pay if you decide against it. Kent, Renton, Auburn, Federal Way, Tukwila and the rest of King County.
Describe the fault and you will get an honest answer about whether it needs somebody today. No charge for the visit or the estimate anywhere in King County.
Prefer to talk it through? Call (253) 369-1502.
Motor runs, door does nothing? That is a stripped nylon gear, and a gear kit costs a fraction of a new opener. We diagnose before we sell.
What this costs and how fast →A door that comes off once comes off again unless the cause is found. Usually a seized roller, a slipped drum or a loose bracket.
What this costs and how fast →Frayed strands near the bottom bracket are the warning. Snapped is the emergency, and it usually takes the door off its track with it.
What this costs and how fast →The fault is ordinary - a spring, a cable, a derailed door. What makes it urgent is what it has trapped. Secured first, repaired second.
What this costs and how fast →Rot or rust across more than one section, or repairs arriving more than once a year. At that point you are buying a door in installments.
What this costs and how fast →