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Broken garage door spring in Kitchener: why this is the one repair not to do yourself

A broken garage door spring is not a homeowner repair. The Door and Access Systems Manufacturers Association's own inspection sheet says springs and spring hardware are under high tension and that all repairs and adjustments must be performed by a trained door systems technician using proper tools. In Kitchener the break usually happens on a cold morning, and the right move is to stop using the door and call.

Last updated October 24, 2026 · Reviewed by the Kitchener Garage Door Repair team

How do I know my garage door spring is broken?

You usually heard it. A torsion spring lets go with a bang loud enough to hear from upstairs, and the door then refuses to lift, or the opener strains, raises it a few inches and gives up. Look at the shaft above the door: a broken torsion spring shows a clean gap of a few centimetres in the coil. On an older single door with extension springs along the horizontal tracks, a broken spring hangs slack or lies on the floor. Other signs are a door that is suddenly crooked in the opening, cables hanging loose from the drums, or a door that slams the last metre when lowered by hand. Any of those means the spring is done.

Why garage door springs break in Kitchener

Springs wear out by counting. A standard residential spring assembly is rated for about 10,000 cycles, one cycle being the door going up and coming down, and the Canadian manufacturer Garaga estimates a typical household at around 1,500 cycles a year. That works out to five to seven years of ordinary use, which puts a door installed when a Doon South or Huron Park house was built in the late 1990s or 2000s on its second or third set of springs by now, or overdue for one. Garaga lists the things that shorten that life:

• Cold. Where winter temperatures regularly drop below minus 25 Celsius (minus 13 Fahrenheit), spring steel can become brittle and snap. An unheated Kitchener garage on a clear January night is in that territory, which is why broken-spring calls arrive in clusters after a cold snap.
• Rust. A spring that was not adequately galvanized, or a damp garage where salt-laden slush melts off the car all winter, corrodes the steel and starts the cracks.
• The wrong spring. Garaga says the spring should match the door's weight with a variance of no more than 5 percent. A spring chosen by eye, or copied from a broken one that was itself wrong, fails early and wears out the opener on the way.
• No lubrication. Dry metal on metal creates friction and wear; Garaga suggests checking and oiling the springs twice a year, and warns against using a degreaser such as WD-40 in place of a lubricant.

Why the industry says not to touch it

The Door and Access Systems Manufacturers Association (DASMA) publishes the inspection checklist that home inspectors work from, Technical Data Sheet 167. On springs it is direct: springs and spring hardware are under high tension; if a spring is broken, do not operate the door until it is replaced; do not try to remove, repair or adjust springs, cables, brackets or the hardware they are mounted to; and because of the dangers involved, all repairs and adjustments must be performed by a trained door systems technician using proper tools and instructions.

The reason is the physics. A wound torsion spring on a double door stores the energy of lifting something that weighs as much as a large appliance, and it stores it all the time, door open or closed. Winding bars, the number of turns, the direction of wind and the set screws on the cones are each a place where a mistake releases that energy at once, usually into hands, face or head. Online videos make it look routine because the person filming has done it a thousand times with the right bars. A socket wrench or a screwdriver in the winding cone is how people get hurt. The second DASMA point matters too: extension springs must have a safety cable threaded through them so a broken spring is contained rather than thrown across the garage, and many older Kitchener doors never had one.

What to do while you wait

1. Stop using the opener. It is built to guide a balanced door, not lift a dead one. Forcing it strips the drive gear and bends the top section, which turns one repair into two.
2. Do not try to lift a double door by hand. With the spring gone it weighs what it weighs, and if you get it up it can come down without warning.
3. Keep people and pets out of the opening. A door hanging on one cable can drop.
4. If the car is inside, say so when you call. A door that will not open with a vehicle behind it goes to the front of the queue, with an honest arrival window rather than a promise.
5. Use the man door. If the garage has no door to the house or the yard, that is worth remembering when the door is eventually replaced.

What a proper spring replacement includes

The technician we book for Doon South, Forest Heights and the rest of Kitchener weighs the door and matches the spring to its weight, height and drum rather than to what is on the truck. On a two-spring door both springs are replaced, because the survivor has done the same cycles and is at the same point in its life. The springs are wound to the manufacturer's turns with proper winding bars, the cables, drums, bearings and rollers are checked while the tension is off, and the door is balanced so it stays put at halfway with the opener disconnected. The opener's travel and force are then reset and the reversal tests run. A high-cycle spring is offered where the door is used as the front door, as it is in most of the subdivisions south of the 401, and explained as the option it is.

What this means for your quote

Spring replacement is quoted in writing before the work starts and depends on the door's size and weight, whether it is a torsion or extension system, whether cables or bearings also need replacing, and whether you choose standard or high-cycle springs. The broken spring replacement page describes the job in full, the Kitchener garage door repair cost guide explains what moves the number, and you can describe the door and what you heard to have the technician call back.

Sources

• Technical Data Sheet 167: Garage Door and Operator Inspection Checklist - DASMA
• Why Do My Garage Door Springs Keep Breaking - Garaga
• How Winter May Make Your Garage Door Dangerous - Garaga