Garage door parts
Extension Springs Repair & Replacement
Extension springs run along the horizontal tracks on either side of your garage door, stretching and contracting to counterbalance its weight every time it opens and closes. You'll usually find them on older and single-car doors, and they're always paired with safety cables that catch the spring if it snaps. When an extension spring fails, your door gets heavy and dangerous in a hurry — if yours just let go, stop using the door and give us a call so nobody gets hurt.
Warning signs
Signs your extension springs need attention
A loud bang from the garage
A snapping extension spring goes off like a firecracker — it's usually the first thing homeowners notice.
The door feels way too heavy to lift
With a broken spring there's nothing left to counterbalance the door, so the full weight lands on you or the opener.
A visible gap or stretched-out spring
Look along the tracks above the door — a separated coil or a spring that no longer springs back means it's done.
The door hangs crooked or jerks on one side
When one extension spring fails, that side sags and the door pulls unevenly, which can throw it off the tracks.
Loose or dangling safety cables
Those cables run through the springs to contain a break — if they're slack or hanging, the spring has likely let go.
The opener strains or gives up partway
Without spring help, your opener fights the door's full weight and may stall, reverse, or quit before the door is all the way up.
Lifespan
How long do extension springs last?
Typically 8,000–15,000 cycles, or roughly 7–12 years of normal daily use
See our Spring Repair & ReplacementReplaced the right way
Our licensed techs match the correct part to your door, install it safely, and back it with a 1-year warranty — usually same-day.
Need extension springs replaced?
Same-day service, upfront pricing, and a 1-year warranty. We answer 24/7.