What Causes Uneven Garage Door Cable Tension?
Garage doors rely on two lift cables working in balance with the torsion or extension springs to raise and lower evenly on both sides. When one cable stretches more than the other, slips partway off its drum, or frays from wear, the door can start to lift unevenly.
In Augusta's humid climate, cables and drums can also develop surface rust over time, which changes how smoothly the cable feeds and can contribute to tension that no longer matches side to side. A door that used to open smoothly but now tilts or scrapes against the frame is showing a common early sign of this issue.
Signs Your Cables Are Out of Balance
A few visual and operational clues can help you recognize uneven cable tension before it turns into a bigger repair.
If one bottom corner of the door sits lower than the other while fully closed, tension on one side is likely different from the other.
A cable that looks loose or bowed compared to the opposite side often means it has slipped off the drum or stretched over time.
Uneven pull from the cables can push the door against one track, creating friction, noise, or visible scuff marks on the rails.
A door that jerks, tilts mid-travel, or moves faster on one side than the other is a sign the cable and spring tension are not matched.
Safety Checklist Before You Inspect Your Door
Garage door cables and springs store significant tension, so a careful visual check is safer than hands-on adjustment.
Repair or Call a Professional?
Some early signs of uneven tension can be monitored briefly, while others call for prompt attention.
Minor Tilt, Door Still Operates
If the door still opens and closes but looks slightly uneven, it's reasonable to schedule an inspection soon rather than wait for the issue to worsen.
Visible Cable Slack or Fraying
A cable that is visibly loose, twisted, or fraying is a stronger signal that a technician should assess the spring and drum setup before you use the door again.
Door Binds, Reverses, or Won't Move Smoothly
When the door catches, reverses unexpectedly, or struggles to move, this points to a more significant imbalance that typically needs prompt diagnosis.
Get a Free Diagnosis for Your Garage Door
If your garage door looks crooked or drags to one side, requesting a free quote lets a technician assess the cables, drums, and springs before the issue affects your opener.