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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.

    Tom Laidlaw
    2 weeks ago
    Having taken a few quotes, we went with this local firm for box sash replacement, looking for period design and modern performance. The quote was fairly priced and the detail of specification involved was very reassuring. Arranging the install was easy and flexible, the installer was very professional and obviously highly skilled. And, we're delighted with the results, the quality is pretty spectacular and although windows of this spec are not cheap, they don't look or feel cheap either. Silent, warm, and elegant, transforming the feel of the two rooms we fitted then in. Very happy.
    Anne olive
    4 weeks ago
    I had 8 box sash windows replaced and chose London Box Sash Windows because they offered acoustic glass and coloured glass to match the originals. The work was done in 3 days and the job was difficult because the original windows & frames weren’t straight. The guys did a brilliant job and I am really pleased with the new windows. I wouldn’t hesitate to recommend the company.
    Clare Allen
    4 weeks ago
    What a fantastic company . Professional from start to finish . We have had wood sash windows replaced in our Victorian terrace house . The product and the work carried out was amazing – we are so happy with the result . From the sales team to the fitters, everything went smoothly and we now have beautiful, period appropriate wood sash windows. It was so worth the cost. We couldn’t be more pleased . Would highly recommend the London Box Sash window company.
    william morgan
    4 weeks ago
    Had new double glazed sash windows installed on one floor and came back to them for another floor a year later. A friendly and knowledgeable team, great product and professional service.
    Louisa Ellis
    1 month ago
    We could not be more pleased with the service we received from London Box Sash Windows. The process from start to finish was very easy from Jake who came to quote, Judith in the office and Andy who came to install were super helpful. The windows are great quality and Andy did a fantastic job, we have rather a "drunk" Victorian house, our bathroom ceiling in particular, Andy has done such a good job, it looks amazing. He was also very clean and tidy. A huge thank you to Jake, Judith and Andy
    Richard Willmott
    2 months ago
    Had this company in to fit a window in our bathroom. Communication was excellent and the fitting was done quickly and with very little mess. We were very extremely pleased with the results. Would thoroughly recommend
    Leo Llewellyn
    3 months ago
    10/10 service and customer experience Bernie did my shutters last week, outstanding job at a good pricd
    Loraine Leeson
    4 months ago
    London Box Sash replaced all the sash windows at the front of my Victorian house including a dormer, and a kitchen casement window. Every aspect of this company’s service was friendly, efficient and highly professional. The windows themselves are perfect with a 50 year guarantee and the fitters were extremely competent and completed the task very quickly. They also took exacting care not to leave any mess, building a floor to ceiling screen around all the work and covering every inch of floor. I was particularly impressed with the initial survey, where my needs were listened to so that what was installed exactly met my requirements. I chose the company’s ‘standby’ offer since I wanted the work done fairly quickly, and they were accommodating enough to fit it within the dates I could do. The customer service was also everything I could ask for, and when a blind couldn’t be refitted and there was a problem with rehanging a curtain rail, I was compensated. It was one of the higher quotes I received, but completely worth it, and the standby reduction made a difference. I can’t recommend too highly.

    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].