sash window complete replacement   new double single glazed sash windows   draught proofing overhaul sash windows   sash windows glazing services   

sash window repairs

Sash Window Repair

At SJB Windows, our technicians are experts in sash window repairs. We will be able to fix your broken window and return it to full working order. When completing a window repair, we always ensure your new windows are as secure and energy efficient as possible. Our talented window specialists opperate throughout London and surrounding areas. If you have a problem which needs resolving, contact us today and we’ll fix it as soon as possible. We offer a variety of repair services on both single glazed and double glazing windows. Even if you’re not sure what needs fixing, our team will be able to diagnose the issue and repair it quickly. 


Sash, box frame and sill repair

It’s common for window frames and sills to rot over time. If parts of your frame or sills are looking degraded, we can return your windows to full working order. It is likely that your aging windows are causing more problems than just their appearance. It is likely that your old windows are allowing heat to escape and draught to enter, which results in your home being energy inefficient. By repairing your windows, our talented window specialists will be able to both improve the look of your property and make it more energy efficient at the same time.

Contact us for a free sash, box frame or sill repair estimate

Cord Repair

If you’re having problems opening and closing your sash window, it’s likely that a cord inside the frame has become worn over time. Problems with cords and sash spiral balancers are a frequent issue. The wear and tear on such an integral moving part of your window means that at some point your cord will no doubt need servicing. Our technicians are highly experienced at replacing worn our cords and your windows will be smooth the open and close in no time. Our service also offers a rebalancing of the sash windows, and adding or replacing of weights where needed.

Contact us for a free cord repair estimate

Locks, fasteners, lifts and pulls

Locks are a vital part of any window and we only use the highest quality parts to maximise the safety of your home. Our experienced team will ensure locks are correctly installed for your ultimate piece of mind. If your fasteners, lifts and pulls need replacement or have failed we will source trusted and reliable replacements that are in keeping with the current style and decor.

You can receive a free estimate by filling out our estimate form

Spring Balance Repair

Certain sash windows have spiral balances as opposed to cords and weights. Such fittings can fail and will need replacing for the window to work correctly again. Each balancer has a size and weight which is unique to that specific sash window. Our trained technicians will make a site visit in order to ensure the correct parts are sourced.

Fill out our contact form for a free spring balance repair estimate

Have you got any questions? Contact us for a free estimate

Contact us today if you require a sash window repair. Even if you aren’t sure what the problem is, the SJB team will be able to quickly diagnose the problem and give you a free accurate estimate. You can call our friendly office team on +44 208 296 9487. Alternatively, email us at

(Click an image to enlarge)

Use our FREE online estimator to get an instant estimate for your job!

"Everything that was done was perfect. Absolutely recommend, Steve and his team are conscientious, reliable and first class workers."

"I'd definitely use them again for future work and wholeheartedly recommend them to others."

"Definitely recommended, everything is thoroughly done and methodical. Very courteous and polite."

guild of master craftsmen