Frayed or snapped garage door cables are common on Duncanville's 1980s-90s housing stock. Same-area cable repair and replacement, done right the first time.
A garage door lift cable is under real tension, and it's wound around a drum next to a torsion spring that's also under tension. If a cable has snapped, the door can drop fast and unevenly, one side dropping while the other holds - that's the point where fingers, feet, and vehicle roofs get hurt. We're not going to walk you through winding a drum or threading a new cable through a stationary pulley on this page. If the cable is frayed but not broken, you can sometimes get by disconnecting the opener and lifting the door by hand to see how it tracks, but if it binds, drags to one side, or the drum has any visible slack, stop and call. The honest limitation here: once a cable has jumped its drum groove or wrapped around the shaft, the fix almost always means detensioning the spring first, and that's not a job to learn on your own door. Cable and drum hardware is cheap. An ER visit or a dented car isn't.
What Causes It Around Here
Most houses across this service area were built between 1973 and 2014, with the bulk of stock - 15 named subdivisions worth - going up in the 1980s and '90s. That means a lot of original galvanized lift cables are now 25 to 40 years old, well past the point where the zinc coating still does its job. Add a moderate heat climate band, and you get summer attic temperatures pushing 140+ degrees baking down through the header wall, drying out the factory lubrication on the drum and pulley faster than a cooler-climate house would see. The cable doesn't fail all at once - it fails one strand at a time, usually at the bottom bracket where it flexes every single cycle. On a household running two vehicles through the door daily, that's thousands of extra flex cycles a year compared to a garage that's rarely used, and it shows up first as rust bloom at the cable end, then as the strand separation that turns into a snap.
The Symptom
A cable problem usually announces itself before it fails outright. Watch for a door that looks slightly crooked when it's halfway up or down - one corner riding lower than the other, because one cable has stretched or partially frayed while the other hasn't. You might hear a light clicking or popping sound from the header as the door travels, which is often a strand catching on the drum groove before it lets go completely. If the door has already dropped and one side is noticeably lower, or the door won't move at all and the opener just hums, that's a cable that's come off the drum or snapped clean. Either way, don't force the opener - running the motor against a jammed or unevenly loaded door strains the gears and can turn a $150 cable job into an opener replacement too.
What the Fix Involves
A proper cable repair starts with releasing tension on the torsion spring safely, then pulling the old cable off the drum, checking the drum groove and bottom bracket for wear, and running a new cable sized to the door's weight and track length. We replace both cables as a pair, not just the broken one - the other side is carrying the same age and the same flex cycles, and it's usually within months of the same failure. Once the new cable is seated and wound to the correct number of turns, we re-tension the spring and run the door through a full cycle to check that it tracks square and stops level at both ends. On a standard double door this is typically a same-visit repair. If the drum or bottom bracket is bent or the track has been pulled out of alignment from the drop, that adds parts and time, and we'll tell you before we start, not after.
How it works
From “it’s stuck” to “it’s fixed”
A quick, honest process - no guesswork and no surprises.
1
Tell us what’s wrong
Describe the symptom - won’t open, loud bang, opener runs but the door won’t move.
2
On-site diagnosis
A technician tests the door under power and by hand and finds what actually failed.
3
Clear, up-front plan
You get the fix that’s needed and what drives the cost - before any work starts.
4
Repaired & tested
The repair is done, the door is set true and tested, and the work area left clean.
Serving Duncanville, TX - tell us what your door’s doing and we’ll take it from there.
How do I know if it's the cable and not the spring?
A broken spring usually makes the whole door feel heavy immediately and the opener struggles the moment it engages. A cable failure tends to show as one side of the door hanging lower than the other, or the door tracking crooked as it moves, because only one side has lost its lift. Both can happen close together since they carry related loads.
Why did my cable snap with no warning?
It rarely is no warning - it's usually a slow fray at the bottom bracket that finally lets go. On older 1980s and '90s stock common across this area, factory lubrication and zinc coating have long since worn thin from repeated summer heat cycling in the attic space above the door.
Should I replace one cable or both?
Both. They're the same age, carry the same tension, and see the same number of open-close cycles. Replacing just the broken one means you're back out here in a few months for the other side, and by then it usually fails at the worst moment.
Is this a job I can do myself?
Not if it involves the torsion spring, and almost every cable repair does. The spring has to be safely detensioned before the drum can be touched. That part of the job has hurt people who tried to shortcut it, and it's not where we'd suggest saving money.
Ready to get your garage door sorted?
Tell us what it’s doing and where you are in Duncanville - we’ll take it from there.
