Garage Door Cable Repair
Garage door cables are one of the most commonly repaired components — right alongside springs. Here’s how to recognize a failing cable, why they break, and what to do if yours has.
Signs of a Failing Cable
- The door hangs crooked or uneven on one side
- You can see a frayed or visibly damaged cable near the bottom bracket
- A loud snap followed by the door refusing to move
- The door moves jerkily or gets stuck partway
Why Cables Fail
Cables lift the door in coordination with the springs, and they wear out from the same repeated tension and friction over years of use. The most common causes are fraying from normal wear, damage to the drum the cable winds around, and spring tension that’s out of balance — which puts uneven stress on one cable.
Cable vs. Spring — What’s Actually Broken
It’s easy to confuse the two. A broken spring usually means the door won’t lift at all and feels extremely heavy. A broken or slipped cable more often shows up as a door hanging crooked, or one side dropping lower than the other. The two systems work together, so a technician will check both — a cable replaced without checking spring balance often fails again quickly.
Cost Factors
Cable repair typically runs $150–$350. It’s common practice to replace both cables together, even if only one has failed, since they wear at a similar rate and a mismatched pair puts uneven strain on the system. See our full cost breakdown for how this compares to other repairs.
Safety Warning
Do not attempt to replace garage door cables yourself. They’re connected to springs under significant tension, and handling them without the right tools and training is a genuine injury risk. If a cable has snapped while the door is raised, stay clear — the door can drop suddenly.
What Lift Cables Do
Lift cables run from the bottom corners of the door up to a drum mounted on the same shaft as the torsion spring. As the spring winds and unwinds, the drums wind and unwind the cables, raising and lowering the door in a controlled way. Each side of the door has its own cable working in coordination with the other — which is why damage to just one cable throws the whole door out of balance.
Corrosion and Wear in South Florida
Cables are typically galvanized steel, which resists rust but isn’t immune to it. In a humid climate like South Florida’s, cables and other metal hardware in a garage can corrode faster than in drier regions, and corrosion weakens the individual strands that make up the cable — often invisibly, until the cable finally gives out under normal tension.
How a Cable Assessment Typically Works
A thorough cable assessment generally looks beyond just the cable itself:
- Both cables — checking the intact cable as well as the failed one, since they wear at a similar rate
- The drums — a damaged or grooved drum can cause a cable to slip or fray prematurely
- Spring balance — uneven spring tension is a common reason one cable fails before the other
- The bottom brackets — where the cable attaches to the door itself
Frequently Asked Questions
Why did my garage door cable snap?
Most often it’s ordinary wear over years of use, sometimes accelerated by a damaged drum or springs that are out of balance and putting extra load on one side.
Can I replace a garage door cable myself?
It’s not recommended. Cables work under high tension alongside the spring system, and mishandling them can cause the door to drop unexpectedly or cause injury.
Does a broken cable mean I need new springs too?
Not necessarily, but the two are closely connected — a technician should check spring balance whenever a cable is replaced, since imbalanced springs are a common reason cables fail in the first place.
Get Help With a Cable Repair
Call +1 (754) 341-6020 or use our contact form to request service.