Sliding Door Grinding or Leaving Metal Shavings? San Diego Repair

What you are seeing

The door makes a grinding or scraping noise every time it moves, loud enough that you avoid using it. There is a line of gray powder or curled metal shavings along the track, and it comes back a day after you vacuum. In the worst cases the rail has a groove you can feel with a fingernail, or the panel frame has a bright, polished stripe along its bottom edge where it has been rubbing.

The door is probably hard to slide as well. Grinding is what hard to slide sounds like once the wheels have stopped turning.

What usually causes it

A wheel that stopped turning. A roller wheel that seizes, or wears a flat spot, no longer rolls. It skids. A steel wheel skidding on an aluminum rail acts like a file and the shavings are the result.

Steel on worn aluminum. Even a wheel that still turns will cut a track whose rail has already worn thin and rough. Once the surface is gone the wear accelerates.

A panel on its frame. If the rollers collapse or are adjusted all the way down, the bottom of the panel frame rides on the track. Aluminum on aluminum scrapes, and nothing rolls at all.

A bent track lip catches the panel frame or the wheel housing on every pass.

What you can check yourself in two minutes

1. Vacuum the track and look at what came out. Gray powder and curled slivers of aluminum mean the rail is being cut. Sand and hair mean debris, which is the easy version.
2. Feel the rail. Run a fingertip along the raised rib the wheels ride on. A groove, a wavy stretch or a rough patch tells you the track is damaged and will need a cap.
3. Look at the bottom of the panel. A bright scraped line along the frame edge means the panel is riding on its frame, not its wheels.
4. Photograph the track close up, with your phone flashlight on, and send it. We can usually tell from the picture whether it is rollers alone or rollers and a cap.

Do not lubricate it. Oil on a skidding wheel does nothing and traps the shavings against the rail.

What we do about it

Grinding doors get two things. First, new rollers: tandem steel ball-bearing wheels on a standard door, stainless on a coastal one. Two wheels per housing spread the load over two contact points, which is why they outlast single-wheel rollers on the same track.

Second, in most cases, a stainless steel track cap. A grooved aluminum rail will chew a new roller too, so we snap a stainless cap over the damaged rail. The cap gives the wheel a hard, smooth surface and it does not shed powder. On a track that is only lightly worn we clean it to bare metal and leave it.

We also straighten or cap a bent lip and check the panel height so it rides on its wheels with clearance on both sides. See track repair and stainless track caps and roller replacement.

When it is not worth repairing

A grinding door is worth fixing almost every time; it is the loudest version of a very ordinary roller job. The limit is how much track is left.

• If the rail has been cut so deep that it has broken away from the sill, there is nothing for a cap to clip onto. Replacing the sill track is a bigger job and we will tell you if it is one we take on.
• If the bottom of the panel frame has worn through where it rode on the rail, the roller housings have nothing solid to mount in.

Both are rare, and both are the end result of years of grinding. Fixing a door the first time it starts to scrape is the cheap option. The signs you need new rollers guide lists what to listen for.

Across San Diego

Shavings in the track are a 1970s aluminum door signature. The single steel rollers on the original sliders in Clairemont, Mira Mesa and Chula Vista have run the same soft rail for decades, and once a wheel seizes the groove follows fast. Those doors get tandem rollers and a stainless cap almost every time; see old aluminum doors.

On the coast, salt air seizes steel bearings early, so we see the same grinding on far newer Fleetwood and Andersen doors in La Jolla and Coronado. Stainless rollers are the answer there; our stainless vs standard guide explains why.

Where we see this

We cover all of San Diego County, usually within the week. Some of the places we work:

• Imperial Beach
• La Mesa
• El Cajon
• Santee
• Poway
• Escondido
• San Marcos
• Vista
• Pacific Beach
• La Jolla
• Carmel Valley
• Mira Mesa
• Scripps Ranch
• Rancho Bernardo
• All service areas

Related guides

• Signs Your Sliding Door Needs New Rollers (And Two-Minute Checks) – Symptoms of worn sliding door rollers in order of certainty, the two-minute checks you can do safely, and how to tell when the track is the real problem.
• Stainless vs Standard Sliding Door Rollers in Coastal San Diego – Steel, nylon or stainless rollers: which your sliding door needs, why salt air within a mile of the coast matters, and where the upgrade pays off.
• What Does Sliding Door Roller Replacement Cost in San Diego? – What sliding door roller replacement costs in San Diego, why quotes run from $250 to $600 or more per door, what should be included, and how to compare.