Published 2026-05-04 · Madison Garage Door

Broken Garage Door Spring: What to Do (and What Not to Try)

How to tell if your spring is broken

Four signs sort this in under a minute. Most homeowners spot at least two of them before they finish their first cup of coffee.

The first sign is the gap. Look at the spring (or the pair of springs) mounted on the bar above the door. A healthy spring is a tightly wound steel coil with no daylight between the turns. A broken spring has a clean two-inch to four-inch gap where the coil has separated. The break is usually clean and easy to see from across the garage. If you find the gap, the diagnosis is done.

The second sign is weight. Pull the red manual release rope (it hangs from the opener trolley), then try to lift the door by hand. A balanced 16-foot insulated steel door weighs about 140 to 170 pounds and should feel like lifting a heavy suitcase. With the spring broken you are now lifting the full dead weight, which is roughly twice that. If the door feels glued to the concrete or it slams shut the moment you let go, the spring system is no longer holding any of the load.

The third sign is opener behavior. A door opener is built to assist a counterweighted door, not to deadlift one. With a broken spring the opener motor will hum, strain, and either stop after a few inches or trip the safety-reverse and slam back down. Some openers throw an error code; many just refuse to move. If the door rises an inch and stops, that is the opener telling you the load is wrong.

The fourth sign is the bang. A torsion spring failure makes a noise. Customers describe it as a gunshot, a baseball bat hitting a steel pole, or a small explosion. The sound carries through the house. If you woke up at 3 am to a loud noise and now the door will not work, that bang was the spring releasing its stored energy in a tenth of a second.

Why DIY spring replacement is genuinely dangerous

This is the section we wish more YouTube viewers would read first. A torsion spring on a residential garage door is wound to 6, 7, 8, or 9 turns of tension before it ever lifts a door. That stored energy is what counterweights the door so the opener can move it with a quarter-horsepower motor. The energy does not go away when the spring breaks; it stays trapped in the coil and in the torsion bar.

When a trained tech replaces a torsion spring, two steel winding bars get inserted into the cones at the end of the spring. The tech unwinds the old spring under controlled tension, then winds the new spring back up the same way. If a winding bar slips out of the cone (or if the cone fails, or if the wrong-gauge bar is used), the bar becomes a 24-inch steel lever flying at the tech's face. The U.S. Consumer Product Safety Commission tracks emergency-room visits tied to garage door servicing, and the recurring injury patterns are broken wrists, broken hands, broken forearms, deep facial lacerations, and skull fractures. People die from this every year.

Extension springs are not as dangerous as torsion, but they have their own failure mode. An extension spring is a giant stretched rubber band made of steel. When it fails or when a tech releases it without a safety cable threaded through it, the spring whips toward whatever is in front of it. We have replaced extension springs in Atwood-area detached garages where the prior DIY attempt put a spring through the drywall on the opposite wall.

The tooling matters too. Proper winding bars are sized to the cone diameter on your specific spring, made of forged steel, and not interchangeable with screwdrivers, rebar, or pieces of conduit from the hardware store. Every photo we have ever seen of a DIY spring injury involved a substitute tool that bent, slipped, or sheared at the worst possible moment.

Torsion vs extension: which one broke?

The visual difference is obvious once you know what to look for. Walk into the garage with the door closed and look up.

A torsion spring sits on a horizontal steel bar mounted along the wall directly above the closed door. Most modern Madison garages built after 1985 have torsion springs, sometimes one (for a 9-foot single door) and sometimes a matched pair (for a 16-foot double door). The bar runs the full width of the door. If you see one or two tight coils on a bar above the header, that is torsion.

An extension spring runs parallel to the horizontal tracks on each side of the door, up near the garage ceiling. Older single-car detached garages in the Williamson-Marquette and Atwood neighborhoods often still have extension setups, as do many 1970s ranch homes in Fitchburg off Seminole Highway. There are two springs (one per side), each stretched along its track, with a safety cable threaded through the middle of each spring.

The weight difference per type matters when we quote the job. Torsion systems handle heavier doors more safely and last longer per dollar spent. Extension systems are cheaper to install up front but are more prone to whip-failure and require the safety cable in every install. We replace both kinds; if your door has extension and you want it converted to torsion during the repair, that is a conversation worth having on the same visit.

What NOT to do in the meantime

Three things to avoid until a tech is there.

Do not keep hitting the opener button hoping it will eventually go up. The motor was sized for an assisted lift, not a dead lift. Every cycle you force on a broken-spring door burns motor windings, strips gears, and sometimes pulls the rail off the ceiling brackets. We have seen Sun Prairie homeowners turn a single-spring repair into a spring-plus-opener-plus-rail repair by stubbornly cycling the door 15 times before calling. The spring job was going to be $290; the full bill landed close to $1,100.

Do not lift the door by hand if the cables look stretched, frayed, or unspooled from the drum. When a spring snaps, the cables briefly take the full load alone. Sometimes they survive intact, sometimes they stretch or jump the drum, and occasionally one parts entirely. A door with a compromised cable can drop suddenly while you are holding it up, and the cable can whip when it lets go. Look at both cables from end to end before you put a hand on the door.

Do not park your car inside if the door is stuck at the top and you suspect a cable is bad. A door stuck in the open position with a failing cable is a several-hundred-pound steel object waiting to fall. Back the car out (slowly, watching the door), park it on the driveway or street, and leave the bay empty until a tech has inspected the cables and the spring system.

What to do right now

Three steps, in this order.

Step one: pull the manual release rope. The red plastic handle hangs from the opener trolley along the ceiling. Pull it down and toward the back of the garage; this disconnects the door from the opener so the motor stops trying to fight the broken spring. If the door is closed, leave it closed.

Step two: secure the door in the closed position if it is not already there. With the spring broken and the opener disconnected, the door will not magically stay up. If it is open, you need to either lower it carefully with two people supporting the weight, or wait for the tech. If it is already closed, locking the manual slide latch (if your door has one) is a good idea. Some Madison homeowners with detached garages also slip a 2x4 vertically between the door and the floor track as a wedge while they wait.

Step three: call us. Same-day dispatch across Madison, Middleton, Verona, Sun Prairie, and Fitchburg in most cases. We bring a stocked truck (galvanized oil-tempered springs in every common size for residential doors), so the vast majority of spring jobs are diagnosed and finished in one visit, often inside 90 minutes.

Why your spring lasted only 6 to 8 years in Wisconsin

The box says 10,000 cycles. The reality in Dane County is closer to 7,000.

Here is the math. A spring cycle is one full open-and-close. Most households cycle the door four to six times a day (commute out, commute home, kids out, kids home, two extras for groceries or trash). At five cycles a day, 365 days a year, you are putting roughly 1,800 cycles a year on the spring. A 10,000-cycle spring should last 5 to 6 years at that pace under ideal conditions.

Wisconsin is not ideal conditions. The freeze-thaw cycle that defines our winters does something specific to steel coil tempering. When the spring is cold-soaked at minus 10 degrees and then heats up to garage-interior temperature with the first cycle of the morning, the steel goes through a micro-expansion that fatigues the grain structure faster than the lab tests assume. Over a winter that hits minus 15 to minus 25 several times, the cumulative fatigue is meaningful. The 10,000-cycle rated spring effectively becomes a 7,000-cycle spring. At 1,800 cycles per year, that is just under 4 years of life if you used every cycle (rare). For most homes, the real-world number lands at 6 to 8 years before the first break.

This is why we recommend the matched-pair replacement instead of single-spring on two-spring doors. Both springs lived through the same winters. The second one is on borrowed time. We also recommend a tune-up every 18 to 24 months (the spring tension gets adjusted, the rollers and bearings get lubricated with a cold-rated synthetic grease, the cables get inspected) to push that 6 to 8 year average closer to 8 or 9.

What the repair actually involves and what it costs

A typical broken-spring service call looks like this. The tech arrives, secures the door, inspects the spring system, confirms the diagnosis, and quotes the job before any work starts. Diagnostics are a flat $89 in our service area, and that fee gets credited against the repair if you approve the work that day.

For the replacement itself, the tech disconnects the cables from the drums, releases the remaining tension on the unbroken spring (if applicable), removes both old springs, slides the new springs onto the torsion bar in their correct orientation, reconnects the cables, and winds the new springs to the calculated turn count for your door's weight and height. The whole process runs 60 to 90 minutes for a standard single-bay door, slightly longer for a 16-foot double or a high-lift conversion.

Pricing in the Madison metro looks like this:

• Diagnostics: flat $89, credited to the repair if you approve work that day.
• Single torsion spring replacement: most jobs land $220 to $320 all-in.
• Matched pair (recommended on two-spring doors): common range is $320 to $420.
• Extension spring replacement: usually $180 to $280 per side, or per pair depending on configuration.
• High-cycle spring upgrade (25,000 cycle): add about $80 to $140 per spring.

These are reference ranges, not firm quotes. The final number depends on your door's weight, the spring gauge required, and whether the cables or drums need replacement at the same time (which happens on a small percentage of broken-spring jobs because a snapping spring can damage adjacent hardware). The tech will quote the full job before lifting a tool.

One more cost note. A real Maple Bluff example from last winter: customer called after a 4 am bang, garage door would not open, car was trapped inside. We arrived by 8:30 am with a matched pair of 0.250-gauge torsion springs on the truck. The job took 75 minutes, the cables were still good, and the final invoice landed at $385 (matched pair plus tune-up bundle). Customer made his 10 am meeting at the State Capitol. That is the standard outcome, not the exception.

Frequently asked

Related reading

• Spring Repair Cost
• Torsion vs Extension Springs
• Spring Lifespan in Wisconsin
• How Spring Replacement Works