What That Grinding Noise From Your Garage Door Means

What a Grinding Noise Usually Means

A healthy garage door makes a steady, low rumble. Grinding is different: a scraping, metal-on-metal sound that tells you something is rubbing where it should be rolling.

In most cases the culprit is friction in one of three places: the rollers that ride in the tracks, the tracks themselves, or the drive inside the opener. The good news is that the noise usually shows up well before a part fails, which gives you time to deal with it on your terms.

Here in the Treasure Valley, dust makes this worse. Fine high-desert dust settles in the tracks and roller bearings, mixes with old lubricant and turns into an abrasive paste. Our Idaho climate guide explains how winter contraction tightens the track around those worn rollers.

Five Common Causes of Garage Door Grinding

Each cause has its own sound and its own spot in the door's travel. Use this table to match what you hear.

Why rollers wear out first

Rollers carry the door's weight on every cycle. Basic steel rollers without sealed bearings wear fastest, and once the wheel gets a flat spot or the bearing dries out, it drags along the track instead of rolling. That drag is the grinding you hear.

If the grinding moves with the door, look at the rollers and tracks. If it stays at the ceiling, look at the opener.

Rule of thumb from our techs

How to Find the Source in About 10 Minutes

You don't need tools for this. You need a closed door, good light and your ears.

1. Watch one full cycle

   Open and close the door with the opener while you stand inside the garage. Note whether the noise runs the whole way or happens at one spot.

2. Look at the rollers

   With the door closed, check each roller. Wobbling, cracked or flat-spotted wheels are worn.

3. Check the tracks

   Look down both tracks for dirt, dents or gaps. A track that bows away from the wall needs adjusting by a tech.

4. Test the opener on its own

   With the door fully closed, pull the red emergency release cord and run the opener. If it still grinds with no door attached, the problem is the opener. Run it once more to reconnect.

What You Can Safely Fix Yourself

Two jobs are fair game for most homeowners and fix a good share of grinding noises.

• Lubricate the moving metal. Use a garage door lubricant spray on hinges, roller bearings and the springs. Skip the roller wheels on nylon rollers.
• Clean the tracks. Wipe the inside of each track with a dry rag to remove dust and old buildup. Don't grease the tracks, since grease catches more dust.

For the bigger picture on what to tackle and what to leave alone, read our guide to DIY repair vs. hiring a technician.

When to Stop and Call a Tech

Some grinding points to parts under heavy tension. Call a technician if you notice any of these:

• The door lifts unevenly or sits crooked when closed
• You heard a loud bang from the garage before the noise started
• A cable looks frayed, loose or off its drum
• The track is bent or pulling away from the wall
• The noise keeps coming back after you lubricate and clean

Springs, cables and bottom brackets hold enough tension to cause serious injury. Leave those to a trained tech.

Grinding Noise FAQ