Sliding Patio Door Roller Repair: How to Fix a Stuck Door

A sliding patio door that's hard to open or sticks partway usually has worn rollers. Replacing them is a common repair that handy homeowners can often do themselves. Here's how.

Why Rollers Fail

• Age: rollers wear down and flatten over the years.
• Dirt: grit in the bottom track grinds the wheels.
• Water: water sitting in the track rusts steel rollers and bearings.
• Misalignment: a door that sits crooked wears rollers unevenly.

Signs Your Rollers Are Worn

• The door is hard to open or close
• It sticks or drags along the track
• Scraping or grinding as it moves
• The door wobbles or sits lower at one end

What You'll Need

• Phillips and flat screwdrivers
• A putty knife and pliers
• Replacement rollers that match your door's brand and roller size (take an old one to the store)
• Silicone spray lubricant
• A helper: glass sliding panels are heavy

Step by Step

1. Find the adjustment screws: small screws (often behind plastic caps) at the bottom ends of the sliding panel. Turn them to raise the door off the rollers or lower the rollers fully.
2. Remove the panel: with a helper, slide the door to the middle, lift it up into the top track and swing the bottom out toward you. Some doors need an inside stop strip removed first. Lay the panel flat on a padded surface.
3. Remove the old rollers: undo the screws holding each roller housing and pry the housing out of the bottom of the door with a putty knife or pliers.
4. Fit the new rollers: slide the new housings into the same positions and screw them in.
5. Reinstall the panel: lift the top into the upper track, swing the bottom in and lower it onto the bottom track.
6. Adjust: turn the adjustment screws evenly so the door sits level, clears the track and lines up with the latch.
7. Test: slide the door back and forth. It should glide without scraping. Lock it to make sure the latch catches.

Keep It Running Smoothly

• Vacuum and wipe the bottom track regularly.
• Lubricate the track and rollers lightly with silicone spray, not WD-40 or grease, which attract dirt.
• Check the alignment once a year.
• Keep the track's drain holes clear so water doesn't sit in it.

When to Call a Professional

If you'd rather not lift a heavy glass panel, the rollers are an unusual size, the track is bent, or the door still drags after new rollers, call us. We replace rollers and repair tracks, locks and handles, and our roller replacements carry a 1-year warranty.