How to Repair a Sliding Window? |

By Editorial Team

Updated on November 7, 2023

Sliding windows gained popularity in the mid-20th century, but are still a widely popular feature in the modern home. Their ability to be used easily makes them appealing for homes with children or those with limited mobility as well as homes with narrow layouts.

Whether above your kitchen sink or in your bathroom, over time these windows can stick, break or become difficult to operate.

Regular maintenance is key to maintaining your sliding windows in good shape. Dirt and grime can cause these windows to malfunction, as well as issues with the tracks they sit on or when the moving parts wear out. Regardless of the case, these windows can be fixed quickly by even the most novice of homeowners.

How to repair a sliding window

Clean the window tracks

First things first, if any dirt like dust or debris find their way into the track, it will hinder the window from sliding. If you are finding that your window is frequently sticking when you attempt to open or close it, chances are the track needs to be cleaned in order for everything to move freely. This job can be done with your vacuum cleaner if it is accompanied by a dust brush. Following a thorough dusting, clean the remaining dirt and grime using a warm, soapy cloth.

Further, if you have an old toothbrush on hand, use this to clean out the intricacies of the track, including channels, corners and any tiny pieces that make up the mechanism. Finally, be sure to spray the track with a silicone lubricant so that friction will be reduced and the window can move readily. 

lavage fenêtre_entretenir fenêtre coulissante_SoumissionRenovation.ca

Move the sash and reconfigure the sliding window's track

After cleaning the track, make sure the window is properly figured on the track. This can usually be done by simply lifting the window up by about ½ an inch and then, placing it back down so that it slides along the track smoothly. If the problem isn’t as simple as just removing and realigning the track,  you may have to take another approach.

Start by removing the trim pieces at both the top and bottom and these will be screwed in to hold the window to the track. Once this part has been removed, you can clean the top and bottom channels of the window and this includes the rollers and any other parts that keep the windows sliding.

Regardless if your track is metal, wood or plastic spray it down, as well as the other moving parts with a silicone lubricant. Place the window down to test out how easily it slides, and once you have determined that everything is in working order, you can put the trim back on the window. 

Track Repairs

large sliding window_renoquotes.com

source: Flickr

The track of your sliding window is one of the most important pieces, as it guides the window open and closed. At certain times, the track itself gets bent if accidentally hit or damaged by way of the window frame, an air conditioner moving in and out or otherwise. If the track has a small kink, it can sometimes be repaired by hand. In other instances, it’s not that easy and will need to be moved back with flat-blade pliers.  

Bend the track back into place, but make sure to do this job carefully, as you could risk bending it too far in one direction or another. If the track is bent outward, you can use a wooden or rubber mallet tapped on top of a screwdriver to hit it back into place.  If the track is vinyl, you may need to remove the pieces that are broken, though if bent, they will be more difficult to realign. Of course, if you find that the track is too bent out of shape to be replaced, it would be recommended that you install a new track altogether. 

Missing Parts

A sliding window track incorporates several small pieces, and thus, there are plenty of ways for this technology to malfunction. Parts will vary from product to product, company to company, so if a specific part of your sliding window breaks, you may have to contact the manufacturer to find a replacement

For more information on maintaining your windows, you can also consult these articles:

Get 3 renovation quotes for your sliding window renovation project

RenoQuotes.com can help you get quotes for your sliding window renovation project. By submitting your project to us, we’ll put you in contact with top-rated contractors. Fill in the form on the homepage (it only takes a few minutes), and you will get estimates from trusted professionals

Dial 1-844 828-1588 to speak with one of our customer service representatives


Get 3 free quotes for your project!

Submit a project and get 3 free quotes!

Looking for something else?

Table of contents

4 min read

Find contractors near you

Enter your postal code



Related articles

The latest industry news, interviews, technologies, and resources.

11 min read

Editorial Team

23 Jul 2025

15 Flooring Options Made for Kitchens

Given that your kitchen floor is exposed to it all, from dirt, grime, and wear and tear from heavy foot traffic, boiling and oily spills from falling pots and pans, flooring has to be as tough and resilient as they come. Yet, it still has to look good, stylish even, blending seamlessly with the overall decor. 

Interior renovations
8 min read

Editorial Team

07 Nov 2023

How to build an indoor garden or greenhouse

Not every home is privy to a huge backyard with ample green space. Some of us live in tiny homes or high rise apartments. If your home is far from the ground, but you find your green thumb itching, then you can create a mini garden or greenhouse right indoors! 

Interior renovations
5 min read

Editorial Team

05 Dec 2025

4 Large-Scale Home Improvement Projects

Pretty much all renovation projects consume a significant amount of time, money and patience. Of course, the reason most homeowners take on a renovation is to improve their quality of life as well as their home resale value.

Exterior renovations
5 min read

Editorial Team

07 Nov 2023

Building a Home Off-Grid: What to Consider

Many homeowners, as well as those aspiring to become homeowners, may dream of finding their way out of the city and living a life beyond societal confines. This means living a life off-grid.

5 min read

Editorial Team

16 Oct 2024

Building Permit - Will You Need One for Your Home Renovations?

If you plan on renovating your house, whether it’s a transformation, remodel, or extension, checking whether you need to apply for a building permit with the city is paramount.