What Causes Uneven Cable Tension
Garage door cables work together with torsion or extension springs to lift and lower the door evenly on both sides. When one cable stretches, frays, or slips off its drum, the tension between the two sides becomes unequal, and the door starts to travel unevenly along its tracks.
Common triggers include worn cable drums, loose set screws, rusted cables, or a spring that has lost some of its lift. Over time, even small imbalances tend to get worse, especially with regular daily use of the door in Daphne's humid coastal climate.
Factors That Affect Cable Tension
Cables that have been in place for many years can stretch or fray, making it harder for both sides to carry equal load and stay level.
If a cable slips off its drum or the drum shifts out of position, the tension on that side changes and the door begins to lean.
A torsion spring that is weakening unevenly compared to its partner can pull one side of the door harder than the other during operation.
Bent or misaligned tracks can cause a cable to bind or drag, which changes how much tension reaches the roller on that side of the door.
Coastal humidity in the Daphne area can accelerate rust on cables and hardware, weakening one side faster than the other over time.
Signs Your Garage Door Has Uneven Cable Tension
What to Do Next
Stop Using The Door
If the door looks visibly crooked or is dragging, avoid using the opener until the cables and tension have been checked to prevent further strain.
Note What You're Seeing
Write down which side seems affected, any noises you hear, and when the issue started so a technician can diagnose it more quickly.
Request A Free Quote
Reach out to schedule an inspection so a technician can measure tension on both cables and recommend an appropriate repair plan.
Get a Professional Cable Inspection
Cable and spring systems carry heavy loads under tension, so adjustments are best left to a technician with the right tools. Request a free quote to get a diagnosis-based plan for your door in Daphne, AL.
Why Professional Adjustment Matters
Garage door cables are under significant tension even when the door is closed, and adjusting them without the right tools can be risky. A technician can measure the tension on each side, inspect the drums and springs, and make adjustments so both sides move together.
Leaving uneven tension unaddressed can put extra strain on the opener and rollers, which may lead to additional repairs down the road. Scheduling an inspection early often helps keep the rest of the door system in better condition.