We've got a closet with a pair of overlapping sliding doors that hang, by their wheels, on a top-mounted rack. There's a bottom guide screwed to the floor that keeps the doors lined up. But unless a door is opened carefully and slowly, one or both of its wheels come off the track. Are there any tricks or adjustments I can make to prevent this?

  • Sounds like a crappy door design. Assuming you don't want to [spend the money] to replace the doors entirely, maybe there is a way to screw a piece of wood next to the wheels as a guide to prevent them from coming off? Or perhaps replace the wheels with better designed ones (eg: maybe buying replacement hardware for a different set of doors and adapting them). You'd have to post a couple pictures of the wheels and track for me to suggest anything more specific.
    – gregmac
    Commented Sep 23, 2014 at 16:23
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    (I'm the OP) I took some measurements and figured out what's causing the problem: The door opening is about 3/4" wider at the top than at the bottom. So the bottom of the doors are hitting the side while there's still a gap near the top. That causes the opposite side to "ride up" a bit and knock the wheel off the track. Short of reframing the entire closet, I'm not sure what I can do. I can look for replacement hardware / wheels that might be less likely to pop off the track, but I'm not sure if that exists.
    – user249493
    Commented Sep 23, 2014 at 18:17
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    In that case, maybe you could shim it out. Either install some type of stopper (such as an an actual door stopper) on the wall, or a block (made of scrap wood) on the back of the door, so that the top of the door hits the stopper at the same time the bottom hits the wall.
    – gregmac
    Commented Sep 23, 2014 at 19:39
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    Nothing in a house ever stays exactly square, even if it started out that way. Things need to be designed to tolerate that. I agree with @gregmac that installing a stop block may be your best bet. But also, the postion of the rollers relative to the door is often adjustable by loosening/retightening a few screws; you may be able to bring the door into alignment with the frame and/or reduce the distance between roller and door so it's less likely to jump off the track.
    – keshlam
    Commented Sep 23, 2014 at 20:02

5 Answers 5


Tip #1 I do a lot of remodels and the easiest way to make a bedroom look newer is take out the old hollow doors or mirrored doors and put in 6 panels. Not many closets are square either. The first thing you need to do is use the rolling mechanism to adjust the door meet the wall as good as you can. You can angle the rollers and move them up and down. Obviously your door needs to slide on the floor so you have to play with this a little. But try to get each door to match its outside wall.

Tip #2 Buy better rollers. These only cost a couple dollars at big box and if you are taking old ones out, there is no extra work. For instance the roller in Mazura's answer isn't as adjustable as the normal roller you would get at big box.

Tip #3 You want a little friction on the flooring... But that only works with carpet. If closet doors are flung open the pressure of the roller will eventually affect the track each time it jumps off. So get the doors a little lower.

Tip #4 Make sure the rollers are about 3-4 inches from the outside of each door. The closer to the middle your rollers are, the easier for them to jump.

Tip #5 Get a good light/flashlight and inspect your tracks. Most tracks are about the same quality (I am sure there are high end ones but I haven't seen them). You can have two problems with the track. First the track can be angled down. This just happens with the weight of the door over time. It actually doesn't hurt to have it angled up slightly (open side of track). For this use a wood block and hammer.

The other thing that goes wrong is the lip itself becomes deformed or it get pushed down. I would simply tap this into place with a hammer. For more deformed sections I break out the pliers. If I am having an issue I go through the whole track with pliers.

Tip #6 Grease the wheels and track.

  • Thanks for the great tips! The doors are hanging over ceramic tile, so there's no friction to slow them down. I will look into replacing the rollers with better ones as well as seeing if I can replace the track with a "captive" one. In the meantime, I showed my family why they can't just push the door hard into the side.
    – user249493
    Commented Sep 24, 2014 at 13:38

Most high end sliding door hardware has captive wheels. that means the track has a top edge as well as a bottom edge.

While changing tracks is a project, it should solve the problem.


Buy new rollers if adjustments do not avail you. To remove the door, disengage the lower track. Standing outside, tilt the bottom of door towards you. Lift slightly and the door should fall off. Insure the track is free of debris. Measure your roller arm carefully, Prime Line Products has many types and sizes. Your wheels probably don't look like this anymore, on Ebay:

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Check the area where the doors run along the bottom ,on many older homes the bottom of the door runs on a small piece of iron known as a sled. If any debris plaster etc. is in the doors glide path it will lift the door when closing and will knock the roller off the track. Just use a flashlight in one hand and a long thin stick (yard stick) in the other hand and push any debris over to the side (left and right) and clear the doors path and you should be ok. Also to get the roller back on track lift the door at the bottom with a large flat head screwdriver and a block of wood and wiggle the door left, right, in and out until the roller seats on the rail. This may take many attempts unless you get lucky. Good luck , it's a real pain , but better the tearing your walls out .


If you have a gap at the top or bottom where the door and opening meet . The roller assembly is adjustable to level the door.

If there is base trim and the bottom of door is not notched out ,this will cause the door to come off track from hitting it.

There is floor mounted hardware that acts as a divider and keeps the bottom of doors in place from swinging in and out.

Over stuffed closets without this divider will cause doors to come off track.

The screws holding the roller hardware usually get over tightened and stripped out. They may need to be moved or add another screw.

Slamming the doors often is rough on the roller hardware and throws off the adjustments. Closets in kids rooms are prone to this.

Adding a 3rd roller to center of door will help with keeping doors on track for the old beat up doors.

If roller hardware has been replaced with the wrong sized rollers they will definitely constantly come off track.

Beware front door rollers are different from the back rollers.

Properly installed sliding doors that are not rough handled will work as they should.

Bifold doors work better but have their issues too but work fine when hardware and door are installed and adjusted correctly and not rough handled which is the key to using these type of closet doors.

  • Hello, and welcome to Home Improvement. Thanks for the answer; keep 'em coming. And, you should probably take our tour so you'll know how best to contribute here. Commented Feb 14, 2020 at 0:50

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