Beautiful sash windows for Streatham homes

We manufacture and install A-rated box sash windows in Streatham, Norbury, or nearby areas

If you are looking for sash window installation, London Box Sash Windows is your ideal choice. We are a local company specialising in handcrafted sash windows made from various high-quality materials, including Accoya wood and A-rated double-glazed glass units.

Our windows are meticulously designed to retain the timeless charm of traditional sash window aesthetics while offering outstanding energy efficiency and durability.

Choosing London Box Sash Windows for your sash window installation ensures you benefit from top-tier materials that resist rot, decay, and warping. Our double-glazed sliding sash windows provide exceptional insulation, significantly lowering energy bills. Additionally, all our sash windows are manufactured in our London factory just a few miles away, allowing us to maintain strict quality control.

Our team consists of highly experienced tradespeople committed to delivering excellent service and craftsmanship. By opting for London Box Sash Windows, you can enhance the beauty and efficiency of your home with our expertly crafted sash windows, ensuring they stand the test of time while complementing your property’s aesthetic; see what our customers say about us in our reviews.

One recent client said:

I have bought windows from London Box Sash twice now – the service is unmatched. Having had quotes from a series of other providers, LBSW kept coming out on top for me. The quality of the windows is extremely high, and they have made a massive difference to the feel of my home. The double glazing is excellent, and the installation was swift and professional. A huge thanks from a very happy repeat customer.

Please get an instant quote or contact us at [telme].

Norbury sash window company to fit Accoya sash windows

Our sash windows and casement windows are ideal for both modern and traditional properties, combining classic style with contemporary performance. The timeless sash design enhances the character of any home, while our use of Accoya timber ensures the superior durability and functionality that modern materials can provide.

Accoya is a specially treated softwood enhanced through an innovative process called acetylation. This treatment strengthens the wood and renders it resistant to insect damage, making it an exceptionally durable option. With proper care, Accoya sash windows can last over 80 years and require minimal maintenance from homeowners.

Our Accoya windows are sustainably sourced and fully recyclable, positioning them as some of the most environmentally friendly options. By choosing our Accoya sash windows, you are investing in quality and longevity and making a responsible choice for the environment. This perfect blend of style, strength, and sustainability ensures that our sash windows will enhance your home for generations.

See some of our sash window installations by viewing our portfolio.

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Sliding sash window installation in Streatham, CR4

In South London, Streatham is renowned for its green spaces and Victorian and Edwardian architecture. The area boasts a mix of period homes, including terraced houses and elegant flats, many of which feature traditional sash windows integral to their character.

These original windows may suffer from wear and tear over time, leading to issues such as drafts, poor insulation, and difficulty in operation. By investing in replacement sash windows, homeowners can significantly enhance energy efficiency, reducing heating costs and improving comfort throughout the year.

Upgrading to these high-quality windows can preserve a property’s historic appeal while ensuring they meet contemporary standards of performance and sustainability, making them a smart choice for residents looking to improve their homes.

Please read our blog: Sash window vs other styles: What’s ideal for London homes?

We install Accoya and timber sash windows in Streatham.

Here at London Box Sash Windows, we are passionate about windows. Our sash windows come in various types, each with unique features.

Our timber sash windows are made using modern materials and techniques to improve energy efficiency. Options such as double glazing, weatherstripping, and insulated frames help reduce heat loss, enhance insulation, and lower energy bills. Additionally, these windows offer effective noise reduction, especially important in a busy city like London. When combined with double glazing, our timber sash windows create a quieter living space.

High-quality London Box Sash windows are designed for smooth operation, incorporating counterbalanced mechanisms or spring systems for effortless opening and closing, requiring minimal force and maintenance, ensuring ease of use over time.

Another client said:

London Box Sash Windows just completed the installation of our new, double glazed windows across our mid-terraced Victorian house. We couldn’t be happier with the experience, from start to finish. Jake took a lot of time during the initial consultation, explaining the options available and impact on costs. We had four quotes in the end, roughly in the same price range and decided to go with LBSW due to their professionalism and responsiveness. Harry did the technical inspection pre-installation and Judith kept us updated throughout the process. At the scheduled day of installation, Audris arrived punctually (on the minute!) and his and David’s work was spotless. They both worked extremely hard, precise and left every room they worked in tidy (we didn’t have to do any cleaning ourselves!)… Our house is much warmer, quieter and with no more annoying draughts, we don’t regret the investment for a second.

Andra Chira

I had a great experience with this window sash company. The online quote tool was quick and easy, and they followed up promptly after my enquiry. They had availability to visit soon after, and Simon, who came round, was excellent – professional, clear, and really knowledgeable. I found the whole visit very informative.Although I couldn’t go ahead with the project due to a change in circumstances, the experience was excellent from start to finish. When I’m ready to pick it back up, I’ll be coming straight back to this team.

Daniel Hills

Very happy with the service we received from London Box Sash. Excellent quality windows, reliable communication and they even helped us through the lengthy planning permission process. Would recommend!

Fritha Hookway

So happy with the whole experience with London Box Sash. Our new windows look amazing. The whole process was very thorough, competitive in price and really quick for install – which was a nice surprise as the lead time was halved from what we’d thought it might be. The team were also exceptionally helpful when one of the old windows were were planning to replace was severely damaged during a storm. They came to board it up free of charge in the interim while the new one was still being built. Simon in particular was really helpful – a huge thank you to the whole team.

Bev Roberts

Once again an excellent experience from start to finish !If only every company was as brilliant as London Box Sash Windows .i will definitely be coming back to get the rest of my windows replaced by them

Olivia Fothergill

Absolutely fabulous service from start to finish. Top notch communication and friendly too! Andy did our sash windows for us and left the house in spotless condition and did an incredible job. We are thrilled with the results

marie Chiron

Living abroad presently, no regret having London Box Sash window replacing eight old windows with double glazed ones including two leaded windows. My initial contact, Jake, makes me at ease with the process. Judith who presented the quote, had it very well explained. Harry who is in charge of organising the actual work, upon inspection of my flat, gave me an initial details situation on potential problems i.e position of radiators, sink, gas meter etc, however worked around those problems with the engineer. Harry’s honesty was appreciated. The team of installers managed by Harry was equally good. My tenants are very happy with those new windows, they can feel the difference in temperature. From the video received, I am impressed with the end product. Would recommend London Box Sash Windows to friends and neighbours. London box sash window is a company you can trust.

Jason Ward

Excellent service throughout. High quality window. Prior survey very straight forward. Actual installation highly professional – clean workmanship, tidy and efficient. Very impressed and highly recommended.

Benjamin Cloue

Amazing experience and strongly recommend London Box Sash!From quoting with Jake, surveying with Harry, fitting with David and contract discussions with Judith, the whole team has been fantastic and provided a great customer experience.The team was always punctual and the fitting was done very fast and super clean (thank you David!).

Book a sash window survey in any of the nearby locations:-

Balham
Lambeth
Lower Norwood
Upper Norwood
West Norwood

To receive a quote for Streatham replacement sash windows, call now

For a high-performance sliding sash windows or box sash windows quote, please call [telme] or email [emailme].

For sash windows Tooting, contact our team now.