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.

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!).

Irena Stanwell

It is my second time I am using London Box Sash Windows replacement service. I was first of all pleased to learn that the same people were still working in the company and it was a pleasure to deal with the team who I still remembered since my first interaction with the company few year back.The performance of the LBSW was outstanding from the beginning to the end, punctual, knowledgeable, friendly and very professional. Explained all options etc and the performance on the day was seamlessWould highly recommend with no reservations..

Louise Norman

I am very satisfied with both the products and service provided by London Box Sash Windows. I was reassured by Murray’s knowledge and experience and he was helpful and patient when I was working out what I wanted. He listened, and there was no “hard sell”. Harry did the survey and Anjelo and Rafal the installation. They were all punctual and courteous. The installation was carried out quickly and efficiently, and Anjelo and Rafal took care with my property and tidied up after themselves. The aftersales care provided by Murray was excellent. Nothing seemed to be too much trouble. Having windows replaced is not a cheap option and involves a fair amount of upheaval, but I felt throughout the process that I could trust LBSW to provide value for money and make it as smooth as possible. I am very pleased with the end result. My new bay window looks great and is totally in keeping with the period of my property, including the “swept” heads. I immediately started to feel the benefits of having double-glazing in terms of heat retention, no draughts and noise reduction. I will also benefit from the improved security and low maintenance it offers. I would not hesitate to recommend London Box Sash Windows.

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.

Joe Philp

A fantastic job. The end result is brilliant and a big improvement in terms of sound and thermal insulation. The team went above and beyond, taking time to understand our requirements and coming up with creative solutions. They were helpful and responsive throughout the process and the job was done quickly, carefully and meticulously – despite a last-minute adjustment that had to be made during the replacement. We felt in very safe hands and trusted the team completely – I wouldn’t hesitate to recommend.

Nicola P

This is the second time we have used London Box Sash to replace wooden sash windows in our conservation-area property. The quality of the windows is excellent. The team at London Box Sash, both the people in the office and the installers who come out to fit the windows, are an absolute pleasure to do business with. The installation team left my house spotless. A couple of small snagging items were dealt with within days. Highly recommended.

Phil Feddon

This is the second time we’ve used London Box Sash in the last 2-3 years. Once to replace all the windows at the front and recently to replace windows at the rear.Both times the service has been excellent all the way from the office staff to the operatives on site. Smooth operators, clean and efficient I have no hesitation in highly recommending the company.

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.