How To Fix A Casement Window That Won’t Close All The Way?

Casement windows are a popular choice for homes, offering ventilation and natural light while providing an attractive aesthetic. Unfortunately, like most window designs, casements may periodically need some minor adjustments in order to operate properly. If you’re having trouble with one of your casement windows not closing all the way, then never fear.

In this blog post, we’ll show you how to diagnose the problem and make it work as well as new! Whether it’s adjusting the hinges or replacing a broken pane, there are several solutions that can quickly fix any uncooperative casement window.

So read on for more details about what could be wrong with your tricky casement window and how to effectively get it working as intended once again.

Diagnosing the Problem:

The first step in fixing your casement window is to diagnose what exactly is wrong with it. Here are some of the most common issues that could be preventing a window from closing correctly:

5 common casement window problems:

1. Warped or loose hinges

How To Fix A Casement Window That Won't Close All The Way

If your window appears to be uneven or the latch won’t catch when you try to close it, your hinges may be loose or warped. To check for this issue:

Carefully remove the screws from the hinge and see whether or not there is any movement. If so, replace them with new screws of the same size and length.

Check the hinges for any signs of warping or damage. If you find any, apply a wood filler to repair them and then repaint the area around the hinge.

2. Broken pane of glass

If your window has a broken pane of glass, it won’t be able to close all the way. To fix this, you’ll need to replace the glass with a new pane:

Carefully remove the broken pane of glass and discard it safely.

Measure the area that needs filling, then order a replacement piece from your local hardware store or online. Ensure you get one in the right size and type of glass.

Cut the new pane to fit, if necessary. Then use glazing putty to secure it in place. Allow several hours for this to dry before you attempt to close your window again.

3. Damaged seals

If the seals and gaskets around your window are damaged, then air could be getting in and preventing it from closing properly. To fix this:

Carefully remove the old seals, then discard them safely.

Order replacement seals of the correct size and type, either online or at your local hardware store.

Follow the manufacturer’s instructions to fit the new seals around your window.

Once installed, try closing and opening the window a few times, to check it operates as expected.

4. Check for obstructions

When you can’t close your casement window all the way, that might be because something is preventing it from closing completely. To investigate this further, check for any obstructions inside or outside the window frame.

Inspect all around the window to look for any objects that may be in the way of it closing properly.

If you find anything blocking the window, remove it and try closing your window again.

5. Sash weight

The sash weight helps keep a casement window closed when not in use. However, if it’s not properly adjusted, it can prevent the window from closing all the way. You can check to see if your sash weight needs to be adjusted by opening and closing the window several times.

If it doesn’t move smoothly or gets stuck at certain points in the operation, then you may need to adjust or replace the sash weight.

6. Weatherstripping

Weatherstripping helps keep air from entering through gaps around the window frame. If your weatherstripping is worn out or missing, this can prevent a casement window from shutting all the way as well as cause drafts and higher energy bills.

You should inspect the weatherstripping for any signs of damage such as cracks, tears, or other wear and tear. If needed, you can easily replace the weatherstripping yourself or hire a professional.

7. Hardware

If you’ve checked all of the above and your casement window still won’t close, it may be time to take a look at the hardware. Check that the hinges are working properly and securely attached to both the frame and sash. You should also make sure that the latch is functioning correctly.

If any of these components need replacing, you can replace them with new parts or consult an expert for help.

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Bonus Tip

Maintaining your windows regularly is key to keeping them functioning properly. Make sure you clean out any dirt buildup, inspect your sash weight balance system and hardware once a year, and replace any worn parts so that your windows can continue to operate smoothly and close completely!

When in doubt, always consult a professional for more serious repairs or if you’re uncertain about performing any of the steps mentioned above.


Fixing a casement window that won’t close all the way isn’t as difficult as it might seem. With a few simple steps, some troubleshooting, and regular maintenance of your windows, you can have your window functioning properly in no time.

Always consult a professional if you’re unsure about anything or have any doubts about making repairs yourself.

Good luck with getting your window closed all the way!


Q: How often should I inspect my sash weight balance system and hardware?

It’s recommended to inspect your sash weight balance system and hardware at least once a year for optimal functionality. Regular inspections will help ensure that your window is secure and operating correctly.

Q: What should I do if my casement window won’t close all the way?

If your casement window won’t close all the way, there could be a few potential causes. To fix this issue, check any loose screws or hinges. Make sure that any broken parts are replaced and lubricate any moving parts with a silicone-based lubricant. You can also try adjusting the sash weight balance system to change how hard or easy it is to open and close the window.

Q: How do I adjust the sash weight balance system?

To adjust the sash weight balance system, you’ll need to remove the trim from around the window frame and locate the spring-loaded balance system. This system typically consists of either a spiral-shaped piece of metal or two separate pulleys and weights on a rope. To adjust the tension, simply loosen or tighten the screw at the bottom to raise or lower the weight.

Q: Are there any other maintenance tips I should follow?

Yes. In addition to adjusting the sash weight balance system, you should also inspect all screws and hinges for wear and tear regularly. If any parts are broken or worn down, they should be replaced immediately. Lastly, lubricate all moving parts with a silicone-based lubricant at least once every six months to ensure the smooth operation of your casement window.

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