A garage door is one of the largest moving objects in most houses, and most of what goes wrong with one, a squeak, a misaligned sensor, a loose bracket, is a straightforward fix. A short list of specific problems are not, and knowing the difference matters more here than on almost any other job around the house, since the parts involved store a genuinely dangerous amount of energy.
Fine to handle yourself
A short seasonal maintenance pass handles most of what actually goes wrong with a garage door.
- Lubricate hinges, rollers and the track with a garage-door-specific lubricant, not household oil, which attracts dust and gums up over time.
- Check and retighten loose hardware, brackets and hinges that have worked loose with years of vibration, using a socket wrench.
- Clean the safety sensor eyes near the floor on both sides of the door with a soft cloth if the door reverses immediately on closing.
- Confirm both sensors are pointing directly at each other and are not knocked out of alignment by anything stored nearby.
- Test the door through a full open and close cycle after any adjustment to confirm the fix actually held.
The torsion spring is not a DIY job
The torsion spring, the large coiled spring mounted above the door on most systems, holds an enormous amount of stored tension, enough that a spring letting go while someone is adjusting it has caused serious injuries and worse. Torsion spring adjustment, repair and replacement genuinely needs a garage door specialist with the correct winding bars and technique, not a general contractor's toolkit. This is one of the few things a handyman should also flatly refuse to touch, not because of a lack of skill but because of the specific, well-documented risk involved in working near a spring under that much load.
A door that is off track or binding
If the door has jumped its track, do not keep running the opener trying to force it back into place, which can bend the track further or burn out the opener motor trying to push through resistance it was never designed to overcome. A door that binds or grinds partway through its travel, rather than simply being noisy the whole way, usually means the track has shifted out of alignment or a cable has come loose from its drum, both of which need the door taken down and reset properly by someone who does this regularly rather than forced through with the opener.
Warning signs that mean stop and call
None of the following should be pushed through or worked around, whatever a video online makes it look like.
- A visibly gapped or separated coil in the torsion spring.
- Cables that look frayed, kinked, or have come off their drum.
- A door that suddenly feels much heavier to lift manually than it used to.
- A door that will not stay open on its own once disconnected from the opener, which points to a failing counterbalance system.
- Any loud bang from the spring area, which usually means it has already broken.
For everything except the spring itself, our garage door repair service across Kitchener, Waterloo and Cambridge handles tracks, sensors, openers and hardware, and we will tell you plainly when a job needs a spring specialist instead.