How Do You Fix a Garage Door That Won't Close All the Way?

How Do You Fix a Garage Door That Won't Close All the Way?

If your garage door refuses to close all the way and leaves a gap at the bottom, it can be frustrating—not to mention a security and insulation risk. Thankfully, this is a common issue and usually stems from a handful of potential causes. Let's look at what might be going wrong and how to fix it.

1. Check the Safety Sensors

Modern garage doors come equipped with photo-eye safety sensors located near the floor on either side of the opening. If the sensors are misaligned or dirty, the door may stop or reverse before touching the ground. Ensure the lenses are clean, the beams are aligned, and both lights on the sensors are steady.

2. Inspect the Tracks and Rollers

Damaged or obstructed tracks can prevent the door from closing fully. Check for debris, dents, or misalignment. Also, inspect the rollers for signs of wear or blockage. If the door feels jerky or stalls, this could be the culprit.

3. Adjust the Close Limit Switch

Garage door openers have a setting that controls how far the door travels when closing. If the close limit is set incorrectly, the opener may think the door is hitting the ground too soon. You can usually find the adjustment knobs on the opener motor. Refer to your unit's manual for the correct procedure.

4. Look for Damaged Weatherstripping

Sometimes the issue is simply thick or misplaced weatherstripping. If the rubber seal at the bottom of the door is new or has shifted, it might prevent full closure. Check for warping or misalignment.

5. Broken Springs or Cables

If your door is too heavy for the opener to close fully, you may have a broken spring or loose cable. This is a serious safety concern and should be repaired by a professional immediately.

Conclusion

A garage door that won't close all the way is usually due to sensor problems, track obstructions, limit switch misconfigurations, or worn mechanical parts. While some fixes are straightforward, others require technical know-how. Call us today for a professional diagnosis and a free quotation.