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Stunning new sash windows Wimbledon

Timber sash windows and replacement sash windows manufactured locally and installed in Wimbledon, Southfields, or nearby areas

Installing Sash Windows In Wimbledon since 1980!

Welcome to London Box Sash Windows. We are a family-run sash window company specialising in high-quality timber sash windows. Our workshop manufactures a complete range of wooden sash windows, preserving timeless elegance and style.

We have been handcrafting custom-made double-glazed sash windows for over four decades to meet our customers’ needs. Our skilled engineers use only the finest materials, ensuring our wooden sash windows are built to the highest standards. We are committed to providing exceptional products and service, earning a reputation for quality and craftsmanship.

Our sash windows team has excellent ratings on Google reviews and top reviews on Which? Trusted Traders.

One recent customer said:

Outstanding customer service and quality in every aspect and interaction. We ended up replacing all the windows that we could we these guys on the strength of the experience we had with them. Would highly recommend getting a quote from them if you are in the market for windows.

At London Box Sash Windows, we prioritise eco-friendly manufacturing that benefits customers and the economy. We produce all our products at our London factory, just down the road from Wimbledon. Remarkably, 90 per cent of our window installations occur within eight miles of their production site. This approach supports the local community and minimises our environmental footprint.

Visit our local showroom to explore our stunning range of sash windows and experience our craftsmanship firsthand. Our knowledgeable team is available to offer expert advice and help you select the perfect sash windows to match your style and needs.

To request an instant estimate or more information, please call [telme].

Why choose our Southfields sash window company for sash window installation?

Wimbledon, renowned for its prestigious tennis tournament, is known for its charming blend of historic and modern properties. Many homes in Wimbledon and Southfields feature traditional architectural styles, making them ideal for replacement sash windows.

Installing new sash windows in these properties enhances their aesthetic appeal and boosts energy efficiency and soundproofing. Modern sash windows, with advanced features like double glazing and draught-proofing, preserve the character of these historic homes while offering contemporary comfort and functionality.

Since engineer John Ellis opened our first workshop in 1980, we have specialised in double-glazed sash windows and doors, meticulously crafted to stand the test of time. Over the years, we have expanded our business, continually investing in state-of-the-art machinery to ensure our products are of the highest quality.

Our commitment to excellence is backed by a highly skilled team of craftsmen dedicated to maintaining the highest quality standards. At LBS, we take pride in delivering products that combine timeless design with enduring durability.

Please see our portfolio.

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Why choose Accoya sash windows in Wimbledon, SW19?

Accoya wood is renowned for its exceptional durability and stability, making it an ideal choice for sash windows. It is resistant to rot, decay, and insect damage, ensuring longevity. Accoya is a sustainable option with a low environmental impact, crafted from non-toxic, responsibly sourced materials. Its impressive lifespan further enhances its appeal, making Accoya wood an excellent choice for windows and doors.

With its combination of strength, sustainability, and aesthetic appeal, our sash windows are designed to stand the test of time while minimising their environmental footprint.

We are dedicated to delivering the best service to our customers. We provide a free consultation and estimate for new sliding sash windows and are always available to answer your questions. Additionally, we offer a satisfaction guarantee on all our products and services.

Another customer added:

An excellent all-round experience; the windows look fantastic, and the much-feared compulsory trickle vent is particularly discreet! If we ever need more doing, we know where to come.

A+ rated sash window installation

It is essential to prioritise energy efficiency in your home. Installing thermally efficient windows enhances your quality of life and contributes to environmental protection by lowering carbon emissions. No matter which style you select, the benefits will immediately be evident. You will experience a warmer, more comfortable living space and enjoy savings on your heating bills.

Timber sash windows are an exceptional choice for several other reasons. First, it has a significantly longer lifespan compared to alternative materials. While uPVC typically lasts 15 to 25 years and aluminium up to 30 years, timber can outlast these options by as much as 30 years when properly maintained.

Although the initial cost of timber windows and doors may be higher than that of other materials, their longevity – around 60 years – results in lower overall costs throughout their lifetime. Additionally, timber is the only mainstream construction material that is nearly infinitely renewable and regenerative.

Our windows are designed to open and close smoothly. They usually feature counterbalanced mechanisms or spring systems, enabling easy opening and closing without requiring excessive force or maintenance.

Matthew Carter
Matthew Carter
I’ve had 4 windows done by London Box Sash Windows now and every time the entire process from quote to installation is so smooth and stress free that I never bother to contact anyone else.The final windows are great quality and beautiful to look at and the work is always done in the timeframe agreed with the installations always carried out by very friendly and professional people.
Jody Torode
Jody Torode
We are a returning customer of London box sash windows. Initially we went with them as they were the cheapest quotes however when we needed other windows to be replaced we didn’t approach any other company, we were so happy with the job they did the first time we wanted to use them again.I was fully informed about what to expect, given clear time scales and they were super helpful in providing information to support our planning application.There was a slight hiccup with the window not being quite right however this was resolved with no issue at all, another window was made and fitted within a few weeks.The fitters are really friendly, work hard and clean. They do an excellent job and I have no complaints what so ever!The whole service from start to finish has been really positive.
Jalon Quinn
Jalon Quinn
All round excellent service from start to finish. Polite, efficient, took care with other parts of the property and cleaned up better than I could have done. Not the cheapest but worth the investment.
Sophie Rushton-Smith
Sophie Rushton-Smith
Excellent team, really helpful. The new windows fit perfectly. No draughts, easy to open and close and high quality fittings. So good, we keep going back and have changed them all.
Joseph Webb
Joseph Webb
Had a set of windows fitted in two rooms, replacing old single glazed windows with new double glazed sash windows. The new windows are a marked improvement and are keeping the house much warmer and better insulated all round. Very professional all round and easy to deal with on fitting timeframes – super speedy fitting too!
Michael Gould
Michael Gould
Box Sash are a truly exceptional company employing fantastic (considerate, skilled and tidy) craftspeople and a superb customer communications team. We have had a living room bay, a bathroom with two windows, a bedroom with two windows and two other bedrooms done briliiantly. We are very happy with them and we keep coming back for more.
Lottie Birmingham
Lottie Birmingham
I recently had a new sash window fitted in my living room and London Box Sash could not have been more helpful.Jake was absolutely brilliant and talked me through all the options and helped me choose what was right for me. The ordering process was simple and the fiting was carried out in one day and I am so happy with the finish.Would definitely recommend – the care and attention to detail is wonderful.Thank you!
Emma V
Emma V
Thrilled with our 3 new box sash windows. The quality of the windows is excellent and worth every penny. I thought the price was very fair compared to other quotes I received given the quality of the wood that is used, the length of the guarantees and the ease of the company to deal with. The process from start to end has been seamless. Everyone we interacted with was superbly knowledgeable, responsive and helpful – from Harry, the sales person who helped explain all the design considerations and options very clearly, Judith in the office helping getting us booked in and Andy, the fitter. Andy consulted us on any bits where needed explaining clearly the decision that was needed and his work was to an excellent standard and he was very clean and tidy and respectful of our home. He also kindly made the suggestion to ask our decorator to angle the external sills as they were flat so that the water runs off which would help avoid any damp issues and improve longevity. His wealth of experience was very obvious and I was grateful for him sharing these pointers and discussing directly with my decorator – it’s something that would never have crossed my mind without his tip. I thoroughly recommend!
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Book a sash window survey in any of the nearby locations:-

  • Wandsworth
  • Malden
  • Balham
  • Mitcham
  • Putney
  • Raynes Park
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To get a quote for new sliding sash windows or replacement sash windows in Wimbledon, call now

Would you like replacement sash windows? Please call [telme] or email [emailme].

Google Rating
5.0
Based on 131 reviews
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