Established in 1979
We’ve been making timber windows for British homes since 1979, with close attention to the details.
ESTABLISHED 1979 · BRITISH MADE
Timber casement windows. Made in Britain.
Made to measure for your home, with the classic look of timber and modern glazing options. Box Sash has been making windows for British homes since 1979.
We’ll call you to discuss your windows.
Since 1979Decades of window-making experience
Made in BritainBritish-made timber casements
Made to measureDesigned around your property
START WITH A CALL
Thinking about new casement windows?
Tell us how to get in touch and a member of the Box Sash team will call you about your project.
01We’ll call to find out what you need.
02We can arrange a home visit to see the property and check the details.
03We’ll discuss the options and prepare a tailored quotation.
No measurements needed at this stage.
Request a callback
We’ll be in touch to discuss your windows.
Thank you. We’ll be in touch.
A member of the Box Sash team will call you about your project.
Call us on 01753 858196WHY BOX SASH
Experience you can see in the details.
Casement windows have a big impact on how a home looks and feels. The proportions, frame details and finish all matter.
Made here in Britain
Our timber casement windows are made in Britain to suit the measurements, style and character of your property.
Details that suit your home
From the opening style and glazing bars to the frame profile, we’ll help you choose what looks right for your home.
50 yearsTimber-frame guarantee
10 yearsGlazing-unit guarantee
WHY WE VISIT YOUR HOME
It helps to see your home first.
Every property is different. A home visit helps us see the current windows, check how they open, and understand the look and comfort you’re after.
- Look at the window openings, proportions and existing details.
- Discuss draughts, noise, glazing and how the rooms are used.
- Consider the right specification before preparing your quote.
We’ll discuss arranging a visit when we call.
Request a callbackTIMBER CASEMENT WINDOWS
Timber casements, made for your home.
From traditional cottages to family homes, made-to-measure timber casements can feel right at home.
BUILT FOR YOUR HOME
The look you want. The comfort you need.
Our timber casement windows are made to measure. We can discuss how they open, the frame details, and modern glazing choices that work for your home.
Traditional detailing
Frame profiles, glazing bars and ironmongery chosen to suit the property.
Modern glazing
Options to help reduce draughts and improve comfort without losing character.
Where are Box Sash casement windows made?
Our timber casement windows are made in Britain.
Will someone visit my home?
We’ll call to discuss what you’re looking for and arrange a home visit where appropriate. It helps us assess the openings, existing details and suitable casement styles before quoting.
Do I need measurements to get started?
No. We can discuss your windows and arrange the next steps without measurements at this stage.
Can casement windows match my existing home?
Yes. We can discuss frame proportions, glazing bars, opening styles and finishes to suit your property.
What guarantees are offered?
Box Sash offers a 50-year timber-frame guarantee and a 10-year glazing-unit guarantee. Ask the team about the applicable terms.
BOX SASH · ESTABLISHED 1979
Looking to replace your casement windows?
Tell us what you’re considering. We’ll call to discuss your windows and arrange a home visit where appropriate.
Request a callbackOr call 01753 858196