Sliding door hard to open
A sliding patio door that grinds, sticks or takes both hands to open usually has a dirty track, rollers that have sunk so the door drags, or rollers that have worn out. Cleaning and adjusting fix most of them in under an hour. Replacing the rollers takes a helper, because the door panel is heavy. Clean before you adjust. Raising the rollers on a dirty track just moves the grinding somewhere else.
How a sliding door rolls
The moving panel of a sliding door rides on small wheels, called rollers, in the bottom of the door. They roll along a raised rail in the track. Dirt in the track, or rollers set too low, make the door drag on the frame instead of rolling.
Each roller has an adjustment screw, usually in a small hole at the bottom edge of the door near each end. Turning it raises or lowers that end of the door.
Why sliding doors stick
Grit makes the rollers grind.
The door drags on the frame.
Flat or cracked wheels.
The door bumps and sticks.
| It | Likely cause | Fix |
|---|---|---|
| Grinds or feels gritty | A dirty track | Vacuum and scrub. |
| Drags or scrapes at the bottom | Rollers set too low | Raise the rollers. |
| Bumps in one spot | A dented rail | Straighten or cap it. |
| Still stiff after adjusting | Worn rollers | Replace them. |
Let's fix it
- Clean the trackVacuum the track and scrub it with a stiff brush, then wipe it with a damp rag. Pay attention to the raised rail the rollers ride on. Grit there makes a door grind.
- Check the rail for dentsRun your finger along the rail. A dent or flat spot makes the door bump. Small ones can be eased back with a block of wood and gentle taps; a badly damaged rail can be covered with a snap-on track cap.
- Lubricate the trackSpray a little dry silicone lubricant on the rail and wipe off the extra. Skip oil and grease; they collect dirt and make the problem worse.
- Raise the rollersFind the adjustment screws at each end of the door's bottom edge, sometimes behind a small plug. Turn each one a little at a time to lift the door until it rolls without dragging. Keep the gap at the top even.
- Replace worn rollersIf the door still grinds, lift it out: turn the adjustment screws to lower the rollers all the way, remove the top stop or screws, lift the panel up into the head track, swing the bottom out and set it down on a padded surface. Pry out the old rollers, take them to the store to match, and put in the new ones.
- Test and fine-tuneSlide the door open and closed several times. Adjust the rollers until the latch lines up with the catch and the door rolls with one hand.
Watch it done
- The door rolls open and closed with one hand
- No grinding or bumping along the track
- The latch lines up with the catch
If it still drags
If it's a door that slides into the wall, see the guide for a pocket door off its track.
If it's hard to slide only in hot weather, the frame or panel may be swelling or the house settling. Adjusting the rollers again usually helps.
If the lock won't catch after adjusting, loosen the keeper screws on the frame and slide it up or down to meet the latch.
What a pro typically charges (a rough estimate; prices vary by area): A handyman or door company typically charges $150–$350 to replace sliding door rollers, including parts.
Find a handyman near youSomething else going on?
Sliding door questions
What is the best lubricant for a sliding door?
A dry silicone spray. Avoid oil and grease, which collect dirt.
How do I adjust sliding door rollers?
Turn the adjustment screws at each end of the bottom edge a little at a time to raise the door until it rolls freely.
How do I know if my sliding door rollers are bad?
If the door still grinds after cleaning and adjusting, or the wheels are flat, cracked or wobbly, replace them.
Can I replace sliding door rollers myself?
Yes, with a helper to lift the heavy panel out safely.
Why does my sliding door stick?
Usually a dirty track, rollers that have sunk so the door drags, or worn rollers. Clean the track and raise the rollers first.