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.

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

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

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!

Robert Purdew

Can’t recommend enough.The windows installed seem like they’re a really high quality product. Very good customer service from end to end. They do a really thorough consultation & respond quickly to calls and emails. The day of the installation was easy and the guys who installed were quick and left no dust or mess. Followed up at the end via text, email and a call to check I was happy with the product – highly rate this approach.

Christine Haight

I found London Box Sash Windows through an online search.With my previous company, I did not get any Fensa certificate and the quality of the wood was inferior to the one used by LBSW for similar prices.They offer a 10% discount for their Standby Schedule Saving which gives very good notice for the client as well. I am very pleased with my double glazed window and the people at LBSW are very helpful.Christine Haight

Judy Carlisle

Both salesman and surveyor were straightforward, helpful and answered all questions.Installers were very efficient, worked very hard, cleaning thoroughly.Astonishingly job completed in 6 hours.The only failing was forgetting to move a chest of drawers.Judith was friendly, very helpful and reassuring

Doxy

We are delighted with our new windows. From our initial enquiry onwards everything was dealt with in a thoroughly professional, efficient and respectful way. A special mention of Andy, our fitter, whose craftsmanship and attention to detail was amazing.

Tasha Spencer

Jake provided a great consultation and really listened to my requirements. He was confident, yet gentle with his approach and so knowledgable. I received multiple quotes from providers which honestly felt like a waste of time, as they didn’t seem to listen to my needs of wanting timber only. London Box Sash Windows stood out among them all, especially for their expertise and care in period properties. Really competitive pricing as well! Cannot wait to use and would highly recommend!

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.