Two thin steel cables carry the whole weight of the door from the springs to the bottom corners. If one frays or snaps, that side drops and the door twists in its track.
Rollers wear out quietly. Cheap steel rollers without bearings grind themselves flat, then jump the track. Hinges crack where the door bends over the top curve. In Baldwin Harbor and other homes near the bay, rust attacks the cable ends at the bottom brackets first, so that's the first place we look on every visit.
Older detached garages in Baldwin add their own problems. Settling slabs and wood jambs that have shifted pull the tracks out of line, and a door that rubs on one side wears its rollers unevenly. We re-plumb and re-fasten the track instead of just forcing the door back in.
Why did my garage door come off the track?
The usual causes are a car bumping the door, a broken cable or spring that lets one side drop, or rollers worn so badly they slip out. A door that closed on something solid can also bend the track. We find the cause so it doesn't happen again a week later.
Nylon or steel rollers?
For most homes we install sealed nylon rollers with ball bearings. They're quieter, they don't rust, and they last far longer than basic steel wheels. That makes them a smart choice for homes near salt water.