What is your garage door doing?

Symptom-driven guide

What is your garage door doing? Choose the closest symptom below. The first distinction often reveals whether to check controls and sensors or stop because the door may have a mechanical problem.

Door behavior

Garage Door Has a Gap at the Bottom

The garage door reaches the closed position but light, air, or a visible gap remains between the bottom of the door and the floor.

Use caution

Garage Door Track Problems: What to Check

A garage door track appears bent, twisted, damaged, unusually loose, obstructed, or otherwise abnormal while the rollers remain in the tracks and the door is not visibly displaced.

Use caution

Component symptoms

Safety levels

  • Safe homeowner check: observation or a basic check without opening or tensioning hardware.
  • Use caution: stop if the door binds, becomes uneven, or shows damaged mechanical parts.
  • Professional repair recommended: springs, cables, off-track doors, and other high-tension work.