Certified Cable Technicians — Galvanized Steel Cable in Stock
A Broken Cable Is Not Just an Inconvenience — It Is a Safety Emergency
Garage door cables are the steel lifelines that work in tandem with your springs to raise and lower your door safely every time it moves. A frayed, snapped, or drum-slipped cable is a serious safety hazard — the door can drop suddenly, fall at an angle, or become completely inoperable. SOS Garage Doors provides same-day cable repair across Toronto, Mississauga, Brampton, Vaughan, Markham, Oakville, and every GTA city we serve, by certified technicians trained in proper tension-release procedures.
Cables run from the bottom corner brackets of your door, up and around the cable drums at the top, and are held under constant tension by the spring system. Every open and close cycle winds and unwinds them slightly — over thousands of cycles, individual steel strands begin to fray, the cable can slip off the drum, or the bottom bracket attachment point can fail. Cable failures rarely happen in isolation. A failed or improperly specified spring puts enormous extra stress on cables — which is why we always inspect the garage door spring system as part of every cable repair. If a spring has already broken or is near the end of its life, we address both in the same visit. Equally, if your garage door opener has been straining to move an unbalanced door due to a cable issue, we check for motor and drive gear damage at the same time.
If you can see a cable lying on the floor of your garage, the door is hanging at an angle, or you heard a sudden bang followed by one side dropping — stop using the door immediately and call us. Cable repair requires releasing spring tension before any cable work can begin — a step that carries serious risk without proper tools and training. Our technicians are certified in tension-release procedures and carry galvanized steel cable rated for your specific door weight and configuration on every service truck. For a full overview of everything we handle on residential doors, see our residential garage door services page, and if your car is trapped and you need us there tonight, our team handles emergency garage door repair 24/7 across the GTA.
All Cable Types & Configurations Covered
Our Garage Door Cable Repair Services Include
From standard residential torsion cable systems to extension spring side-wound configurations and commercial overhead door cables, SOS Garage Doors handles every cable type and door configuration across the GTA. Here is what our technicians address on every cable call:
Snapped Cable Replacement
A fully snapped cable causes one side of the door to drop, leaving it hanging at a dangerous angle. We release spring tension safely, remove the broken cable, select the correct replacement gauge and length for your door weight, re-thread the new cable through the drum and bottom bracket, and rewind spring tension to the correct specification before testing.
Frayed Cable Replacement
Fraying begins at the point of highest stress — usually where the cable wraps around the drum or attaches at the bottom bracket. If your cable shows visible strand separation, it is weeks away from snapping under load. We replace frayed cables before failure, saving you an emergency call and keeping your door operating safely.
Cable Off Drum — Re-Seating & Replacement
A cable that has slipped off its drum — without necessarily breaking — causes the same dangerous imbalance as a snap. This happens when spring tension is lost, a drum bearing fails, or the cable was incorrectly sized for the door. We re-seat or replace the cable, inspect the drum and bearing, and rebalance the door before testing.
Bottom Bracket Replacemen
The bottom bracket is the anchor point where the cable attaches to the door panel. Cracked, bent, or stripped bottom brackets are a common cause of cable detachment and a safety hazard in their own right. We carry replacement bottom brackets for all standard door configurations on every truck.
Cable Drum Replacement
Cable drums wind and unwind the cable as the door travels. Worn grooves on the drum surface cause cable slippage and uneven winding, which progressively damages the cable. When drum wear is the cause of cable failure, we replace the drum and cable together — replacing only the cable on a worn drum means the new cable fails faster.
Drum Bearing & Bearing Plate Replacement
Drum bearings allow the cable drum to rotate freely on the torsion shaft. When bearings seize or wear out, they cause the drum to wobble, creating uneven cable tension and accelerated cable wear. We inspect and replace bearings and bearing plates as part of every cable job where drum condition warrants it.
Spring-Cable System Balancing
After any cable work, the door must be rebalanced. We perform a full tension calibration — adjusting spring torque, verifying cable drum seating, and testing door travel manually and with the opener. A correctly balanced door lifts and lowers smoothly, stays in position halfway open, and does not put excess load on the opener motor.
Extension Spring Cable & Safety Cable Replacement
Extension spring systems use a different cable configuration — including horizontal pull cables and safety containment cables that run through each spring. Safety cables are a critical containment feature: if an extension spring snaps, the safety cable prevents it from becoming a projectile. We replace worn pull cables and safety cables as a pair, and recommend their installation on any extension spring system that lacks them.
Emergency Cable Repair — 24/7 Available
A cable failure at night or on a holiday cannot always wait. If your garage door is stuck open, your car is trapped, or the door is hanging dangerously off-balance, call us any time. Our emergency team is available 24/7 across the GTA with fully stocked trucks — most emergency cable repairs are completed in a single overnight visit.
Common Questions, Direct Answers
Frequently Asked Questions About Garage Door Cable Repair
Cable repair generates more urgent calls than almost any other garage door issue — because when a cable fails, the door usually becomes dangerous or immovable immediately. Here are straight answers to the questions we hear most.
The most obvious sign is a cable lying coiled on the garage floor, one side of the door hanging noticeably lower than the other, or a visible frayed or snapped section of cable near the bottom bracket or drum. You may also notice the door moving unevenly, binding on one side, or stopping partway through travel.
No. Operating a door with a broken or slipped cable is extremely dangerous. The door can drop suddenly on the side with the failed cable, causing serious injury or property damage. It also puts massive strain on the opener motor trying to lift a severely unbalanced load, which can burn it out instantly. Stop using the door and call us immediately.
Most cable repairs take 60–120 minutes, covering the certified tension-release procedure, cable removal and replacement, drum inspection, bottom bracket check, and final balance test. If drums or bottom brackets also need replacing, allow up to 2 hours for the complete job.
Cables fail due to cumulative wear and metal fatigue over thousands of cycles, corrosion from moisture exposure in unheated garages, excessive tension caused by an improperly specified or failing spring, physical damage from a vehicle strike, or age-related deterioration of the cable strands. Ontario winters are particularly hard on cables — freeze-thaw cycles and humidity accelerate both corrosion and fatigue.
We strongly recommend replacing both cables simultaneously. Both cables experience identical wear cycles and fatigue at the same rate — when one breaks, the other is typically within weeks or months of the same failure. Replacing both at once saves you a second call, ensures even tension across the door, and costs significantly less in combined labour than two separate visits.
Directly, yes. Springs and cables form a single tension system — they work together to carry the door’s weight. A failing or improperly specified spring puts extreme additional stress on cables, accelerating wear and increasing the likelihood of premature failure. We always inspect the spring condition during a cable repair and advise you of anything that needs attention.
We use galvanized steel cables selected for your specific door weight and configuration. Standard residential doors use 1/8″ or 9/32″ 7×19 strand galvanized cable. Heavier or commercial doors may require larger gauge. We never install undersized cable — matching the cable to the door’s actual weight is a safety requirement, not a preference.
Cable replacement typically costs $120–$250 depending on cable type, whether both sides are replaced, and whether drum or bracket components also need attention. We always provide a complete written quote before starting any work. No hidden fees, no surprise additions to the invoice.
