Garage Door Repair: Common Fixes and How to Compare Bids
Almost every garage door repair call comes down to one of five failures: a broken torsion or extension spring, a frayed or slipped lift cable, worn rollers and hinges, an opener that lost its limits or its photo eyes, or a damaged section. Figure out which one you have before you call, because the diagnosis sets the scope, and the scope is what actually drives the quote. A door that will not lift at all is a spring problem nine times out of ten. A door that lifts fine but reverses at the floor is an opener problem, not a door problem.
Those two categories almost never overlap. Techs who quote a new opener because a spring snapped, or a whole new door because one section is dented, are solving the wrong problem.
Updated September 2026
A note on numbers. You will not find dollar figures on this page. Parts, labor rates and emergency call fees swing hard by region, by season and by how busy your local shops are, so any number printed here would be wrong for most readers within a month. What you get instead is the diagnosis, the specifications that belong on a written quote, and the questions that keep two bids honestly comparable.
Measuring first saves a wasted trip. If a section or the whole door is coming out, get the opening size right before anyone orders anything. Measure the finished opening width and height and run it through our free Square Footage Calculator so you can hand the shop a real number instead of "it's a two car door." Standard residential sizes are 8x7 and 9x7 for a single and 16x7 or 18x7 for a double, but plenty of older houses sit an inch or two off those.
The five failures behind most garage door repair calls
Doors fail in predictable ways because they are simple machines holding a lot of stored energy. A typical insulated double door weighs somewhere between 150 and 400 pounds, and the springs carry all of it. Every other part is either guiding the door or reacting to what the springs do.
1. Springs. Torsion springs sit on a steel tube above the opening. Extension springs run alongside the horizontal tracks. Either way they are wound or stretched to counterbalance the door weight, and they are rated in cycles. One cycle is one trip up and one trip down. A standard spring is usually rated near 10,000 cycles, and heavier duty springs run 20,000, 25,000 or more. If you open the door four times a day, a 10,000 cycle spring is roughly a seven year part. That math is why springs break on a schedule, and why the second one usually follows the first within a year.
2. Cables. The lift cables run from the bottom bracket up to grooved drums on the torsion tube. They fray at the bottom loop where water and road salt collect, or they jump the drum when the door sets down on an obstruction and the cable goes slack. A cable off the drum drops one side of the door and jams it in the track.
3. Rollers, hinges and bearings. Builder grade doors often ship with plain steel rollers and no bearings. They wear oval, get loud, and eventually chew the track. Nylon rollers with 10 or 13 ball bearings and a 4 inch stem are the standard upgrade. Hinges are numbered 1 through 4 by position, and a cracked hinge tears the sheet metal it is bolted to if you leave it.
4. Opener. Openers fail in ways that look like door problems. Lost travel limits make the door stop short or slam. A misaligned or dirty photo eye makes the door reverse right at the floor and blink a code at you. A stripped nylon drive gear lets the motor run with nothing moving. A sheared trolley lets the door coast free.
5. Sections and tracks. A backed into bottom section, a bent vertical track, a track pulled off the jamb, a rusted bottom rail. These are the jobs where repair or replace is a real question rather than a sales pitch.
How to tell which part actually failed
Walk the door before you pick up the phone. Pull the emergency release cord with the door closed, never with it partway open, and lift by hand.
| What you see or hear | Most likely cause | What a tech will check |
|---|---|---|
| Loud bang from the garage, door will not lift | Broken torsion or extension spring | Gap in the spring coil, spring length, wire size, drum position |
| Door lifts a foot then stops or feels dead heavy | Broken spring on a two spring system | Both springs, door weight on a scale |
| One side hangs low, door binds in the track | Cable off the drum or a broken cable | Cable condition, drum set screws, tube level |
| Door reverses right before it touches the floor | Photo eye alignment or close force setting | Both LEDs, eye height, close force adjustment |
| Door reverses a second after starting down | Down limit set too far, or track obstruction | Limit travel, track debris, roller condition |
| Motor hums, nothing moves | Stripped drive gear or sheared trolley | Gear kit, trolley, carriage |
| Grinding or popping through the whole travel | Worn rollers, dry bearings, loose track bolts | Roller stems, end bearing plates, lag bolts |
| Hand lifts easily but drifts down or shoots up | Spring tension out of balance | Turns of tension, wire size versus door weight |
The balance test is the single most useful thing you can do yourself. Disconnect the opener, raise the door to about waist height, and let go. A correctly balanced door stays put or creeps very slowly. If it slams down or races up, the springs are wrong or unwound, and no amount of opener adjustment will fix that.
Why springs decide most repair quotes
A spring is not a generic part. It is defined by four numbers, and a shop that does not ask for all four is guessing.
- Wire size, measured across 20 coils. Typical residential wire runs about .207 to .250 inch.
- Inside diameter of the coil, commonly 1.75, 2.0 or 2.625 inch.
- Overall length of the wound spring.
- Wind direction, left hand or right hand. On a two spring setup they are opposites.
Those four together decide how much weight the spring can counterbalance and how many cycles it survives. Two springs with the same length and diameter but different wire sizes are completely different parts.
Worked example: sizing a replacement spring set
Say you have a 16x7 insulated double door. The tech weighs it with a spring scale and gets 210 pounds. He measures the drum as a standard 400 series, which lifts a 7 foot door in about 7.5 turns of tension.
- Door weight: 210 lb, split across two springs, so 105 lb per spring.
- Door height 7 ft plus a small allowance means roughly 7.5 turns of tension.
- He picks a spring pair sized to carry that load at that many turns, then verifies with the balance test.
- You ask the cycle question. The standard part is rated near 10,000 cycles. Stepping up wire size and length to reach 20,000 cycles roughly doubles service life for a modest parts change and identical labor.
That last step is the one homeowners skip, and it is the highest value question in the whole job. The labor to change springs is the same either way, so upgrading cycle life while the tech is already on the ladder is nearly free labor. Ask for it in writing on the quote.
Do not wind torsion springs yourself. A wound spring stores enough energy to break a wrist or worse, and the winding bars have to be the correct diameter for the cone. This is the one part of a door that genuinely belongs to a trained tech.
What belongs in a garage door repair scope of work
A one line invoice that says "repaired garage door" tells you nothing and protects nobody. Ask for these items spelled out before work starts. A shop that will not put it on paper is showing you the same warning sign our guide to contractor red flags describes in every other trade.
| Line item | What the quote should say |
|---|---|
| Diagnosis | The specific failed part, plus the balance test result |
| Springs | Wire size, inside diameter, length, wind direction, cycle rating, single or pair |
| Cables | Length and diameter, and whether both sides are replaced |
| Rollers | Steel or nylon, bearing count, stem length, how many |
| Hinges | Which numbered positions, and whether the section metal is torn |
| Bearings and drums | End bearing plates, center bearing, drum series |
| Opener parts | The exact part, not "opener repair," plus whether limits and force were reset |
| Sections | Which section, color and panel style match, gauge of steel |
| Labor | Flat rate or hourly, and whether the trip or diagnostic fee is credited |
| Warranty | Parts term and labor term, stated separately |
| Cleanup | Who hauls away the old springs, sections or opener |
Two extra clauses are worth requesting. First, replace springs in pairs. If one broke on a two spring door, the other is the same age with the same cycles, and paying labor twice inside a year is the expensive way to save. Second, ask them to note the door weight on the invoice. That one number makes the next tech's visit faster and proves the springs were sized rather than guessed.
What changes the number after work starts
Estimates climb mid job for a short list of reasons. None of them should surprise you if you ask up front.
- Torn section metal at the hinges. A cracked hinge usually takes the sheet metal with it. Now you need a strut, a reinforcement plate, or a section.
- Bent or pulled track. Straightening a vertical track is sometimes possible. A creased horizontal track, or a track lagged into rotted jamb wood, is not.
- Rotted jamb. The track lags into wood. If that wood is soft, there is carpentry ahead of you before any door hardware goes back on.
- A seized torsion tube or frozen set screws. Rust turns a routine spring change into a tube swap.
- Discontinued sections. Older doors carry panel embossments and colors nobody makes now. A single replacement section may not match, which turns a section repair into a full door conversation.
- Opener incompatibility. Hanging a heavier insulated door on a light duty opener can push the motor past its rating.
- Headroom and track radius. Low headroom setups use a different track radius and different hardware. A tech who assumed standard 12 inch radius and found a low clearance kit needs different parts on the truck.
Get one sentence in writing before work starts: any change beyond an agreed amount of extra labor requires your approval first. That is the same protection our walkthrough on how to get contractor bids recommends for larger projects, and it works just as well on a two hour service call.
Comparing bids apples to apples
Three quotes are only comparable if they cover the same work. Line them up this way.
- Normalize the parts. If bid A lists 20,000 cycle springs and bid B just says "springs," they are not the same job. Ask bid B for the cycle rating.
- Count the sides. Two cables or one. Two springs or one. Ten rollers or two.
- Separate the trip fee. Some shops credit the diagnostic fee toward the repair and some do not. That moves the real total more than a small parts difference.
- Read the warranty split. A lifetime parts warranty paired with a 30 day labor warranty is mostly marketing. The labor term is the one that matters.
- Check license and insurance. Same rules as any trade. Our guide on how to hire a contractor covers what to verify and how.
- Ask what they will not do. A shop that says "we do not do jamb carpentry" is being honest and lets you line up the right person early.
Worked example: two bids that look different and are not
Bid A: replace both springs, both cables, 10 nylon rollers, reset opener limits, one year labor warranty. Bid B: replace one spring, reuse cables and rollers, 30 day labor warranty, lower total.
Bid B is smaller today because it is a smaller job. Convert it: ask B to quote the same parts list as A. If B's like for like number is still lower, that is a real saving. If it lands within a rounding error of A, take the one with the longer labor warranty. Comparing totals without first normalizing scope is how people end up paying twice.
Repairs you can safely handle yourself
Some of this is genuinely homeowner work, as long as the springs stay alone.
- Clean and realign the photo eyes. They sit no higher than 6 inches off the floor under the UL 325 safety standard. A cobweb or a bumped bracket causes most "will not close" complaints.
- Tighten track lag bolts and hinge screws. Vibration walks them loose. Use a nut driver, not an impact driver.
- Lubricate correctly. Lithium or silicone spray on hinges, roller stems, bearings and the spring coils. Never grease the track face, and never use a penetrating oil as a lubricant.
- Replace the bottom weather seal. The astragal slides out of a channel in the bottom rail. It is one of the cheapest comfort upgrades in the building, and it follows the same logic as our guide to weatherstripping a door.
- Test the auto reverse. Lay a 2x4 flat under the door and close it. The door has to reverse on contact. If it does not, the close force is set too high.
Leave torsion springs, cable tension, drum set screws and anything involving the bottom bracket to a tech. That bottom bracket sits under full cable tension even with the door closed.
Insulation, gauge and what a better door actually buys
If the repair conversation turns into a replacement conversation, three specifications matter more than the color.
Steel gauge. A lower number means thicker steel. A 24 gauge skin resists dents far better than 27 gauge. Builder grade doors sit at the thin end.
Construction. Single layer is a bare steel skin. Two layer adds polystyrene. Three layer sandwiches polyurethane between two steel skins and is both quieter and much stiffer.
R-value. Polystyrene doors typically land around R-6 to R-9. Polyurethane doors run higher, often R-12 to R-18 depending on thickness. Those figures describe the panel, not the whole assembly, and the perimeter seal matters as much as the core. If the garage is attached and you heat the space, read our types of insulation breakdown before deciding how much R-value is worth buying, and look at the garage remodel cost drivers if the door is one piece of a bigger plan.
Frequently asked questions
Why did my garage door spring break in cold weather?
Cold does not weaken steel much, but it does let an already fatigued spring finally give up, and cold mornings are when most people open the door for the first time in hours. The real cause is cycle count. A spring near the end of its rated life fails on an ordinary opening, and winter is just when you happen to be standing there.
Should I replace one spring or both?
Both, on a two spring door. They went in the same day and have taken the same number of cycles, so the survivor is already near its limit. The labor is identical whether the tech changes one or two, which makes the second spring the cheapest part of the visit.
My garage door will not close and the light blinks. What is wrong?
That blink is the opener telling you the safety circuit is broken. Check the photo eyes first: both LEDs should be steady, the brackets square, and nothing leaning into the beam. Direct sunlight on a sensor, a staple pinching the wire, or a dirty lens all produce the same symptom.
Is it worth repairing an old opener or replacing it?
Repair makes sense for gears, trolleys, logic boards and remotes on a unit that still has good travel and force control. Replacement makes more sense when the opener predates the 1993 photo eye requirement, when parts are discontinued, or when you are hanging a much heavier insulated door the old motor was never rated for.
Can one damaged section be replaced instead of the whole door?
Often yes, especially on a common panel style from the last decade or so. The catch is matching the embossment, the color and the section height. On older doors the section may be discontinued, and a mismatched panel on the front of the house is the usual reason people go ahead and replace the full door.
How do I know if my door is properly balanced?
Pull the release cord with the door fully closed, lift the door to about waist height by hand, and let go. A balanced door holds position or drifts very slowly. If it drops or climbs on its own, the spring tension is off, and that is a tech adjustment rather than an opener setting.
How long does a typical service call take?
A spring pair with cables and rollers on an accessible door is usually a one to two hour visit. Opener gear kits and trolleys are similar. Section replacement, track straightening or jamb carpentry stretch the visit and often need a second trip once the correct section arrives.
