Exceptional sash windows Kingston-upon-Thames

A-rated box sash windows & casement windows fitted to residential and commercial properties in Kingston, Norbiton, or nearby areas

London Box Sash Windows is your trusted local specialist in sash window installation. We craft elegant, high-performance sash windows using Accoya wood and A-rated double glazing, offering exceptional energy efficiency and long-lasting durability.

Our designs preserve traditional sash windows’ slim, classic aesthetics, enhancing the architectural charm of properties in Kingston and surrounding areas. Our headquarters are just a few miles away, and we pride ourselves on delivering a personalised service. We collaborate closely with homeowners to ensure each installation perfectly suits their style and functional requirements.

As a Which? Trusted Trader since 2011 and with outstanding Google reviews, our sash window team is recognised for exceptional craftsmanship and customer care. Our strong reputation for quality reflects our unwavering commitment to excellence, making us the preferred choice for creating or restoring beautiful, efficient sash windows.

One recent customer explained:

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.

Contact our sliding sash window specialists at 020 8648 4230.

Hampton Wick: A-rated sliding sash window replacement

At London Box Sash Windows, our timber sash windows are more than just a traditional architectural feature – they are a timeless statement of elegance that elevates any home’s aesthetic. Combining classic design with modern functionality, our sash windows offer the perfect solution for homeowners who value luxury and energy efficiency.

Our dedication to craftsmanship and attention to detail ensures that every sash window meets the highest standards, blending tradition with modern comfort and durability.

To see examples of our recent sash window installation projects, explore our portfolio.

Double-glazed sash windows provide the beauty of traditional timber frames while significantly enhancing insulation and heat retention, ensuring a warm and comfortable indoor environment, especially in colder seasons.

One customer added:

Can only recommend! Everything went extremely smoothly. The team were always available to answer any questions and walk us through the entire process to get our new window installed. Also very competitively priced.I will be reaching out to them soon to get other slash windows replaced.

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Thinking about wooden sash windows in Kingston-upon-Thames, KT1

Kingston-upon-Thames, a historic market town on the River Thames, boasts a mix of architectural styles, from charming Victorian and Edwardian homes to sleek, modern developments. Many properties feature classic period details such as bay windows and intricate brickwork. Homeowners in Kingston often focus on preserving the traditional character of their properties while incorporating modern upgrades for comfort and efficiency.

Accoya wood offers many benefits, making it an ideal choice for sash windows. Its exceptional dimensional stability means it resists moisture-related issues. Accoya’s natural resistance to decay ensures durability, as it is impervious to insects, fungi, and rot. Environmentally conscious homeowners will appreciate its sustainable origins, as it is sourced from FSC-certified forests and requires less maintenance, reducing its ecological footprint.

This long-lasting material is a sound investment, backed by a 50-year guarantee for exterior use and 25 years for ground contact. Accoya also offers superior UV resistance, helping it maintain its aesthetic appeal even under prolonged exposure to sunlight. Additionally, its ability to hold paint or varnish for extended periods means your windows and doors will remain beautiful with minimal upkeep.

Please read our blog: What are the advantages of wooden window frames?

Our sliding sash window installation Kingston

Does your home feature timeless sash windows that are beginning to show their age? If they are becoming draughty, noisy, or no longer performing effectively, it may be time for an upgrade. Revitalise your property with replacement sash windows from London Box Sash Windows.

Our expertly crafted windows are designed to preserve the charm of your home while significantly enhancing its energy efficiency, reducing noise, and boosting overall comfort. Combining traditional aesthetics with modern functionality, our windows ensure your home retains its classic appeal while benefiting from improved performance and durability.

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:-

Richmond Upon Thames
Strawberry Hill
Teddington
Twickenham
Whitton

To get a quote for new or replacement sash windows throughout the London Borough of Kingston upon Thames, call now

For further details about our sash window installation or to request a free quote, please call 020 8648 4230 or email info@londonboxsash.com.

Kickstart your project for new sash windows Raynes Park.