Premium Putney sash windows

We install and replace A-rated box sash windows & casement windows in Putney, Barnes, or nearby areas

Installing Sash Windows in Putney since 1980!

Welcome to London Box Sash, your trusted expert for sash window installation near you. We specialise in crafting beautiful, high-performance sash windows using Accoya wood and A-rated double glazing, ensuring enhanced energy efficiency and lasting durability.

Our designs maintain the slim, elegant features of traditional sash windows, seamlessly complementing the architectural heritage of Putney homes.

As a local sash window company, we take great pride in producing our windows just over two miles away, offering a truly personalised service to each client. This proximity allows us to work closely with homeowners, ensuring that every installation meets your unique style and functional needs.

Our sash window team consistently receives excellent ratings on Google reviews and has been a proud member of Which? Trusted Traders since 2011, earning top feedback for our craftsmanship and customer service. Our long-standing reputation for quality and reliability speaks to our dedication to delivering exceptional results for every project.

One recent customer 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.

Get an instant quote for sash windows or call our team now on [telme].

Barnes sliding sash windows for your home

At London Box Sash, our timber sash windows are not just a traditional architectural feature; they are a hallmark of elegance that enhances the first impression of any home. These windows blend classic design with modern functionality, offering an ideal solution for homeowners seeking to maintain a luxurious aesthetic while improving energy efficiency.

By opting for double-glazed sash windows, you can enjoy the charm of traditional timber frames while benefiting from superior heat retention and insulation. This combination is crucial for maintaining a comfortable indoor environment, particularly during colder months.

Our expertise and passion for excellence guarantee that your sash windows will meet the highest standards, providing you with the perfect blend of tradition and modern comfort for years to come.

For images of recent sash window fittings, please see our portfolio.

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Why choose our wooden sash windows in Putney, SW15?

Putney is located along the banks of the River Thames in southwest London. It is known for its beautiful green spaces, such as Putney Heath and Wandsworth Park. The area boasts a mix of charming Victorian and Edwardian properties and modern developments.

Many of these period homes feature original sash windows, which, while aesthetically pleasing, may require replacement due to age-related wear and tear, poor energy efficiency, or damage from the elements.

Our sash windows are made from Accoya wood. Accoya is a treated softwood created through an acetylation process that enhances its natural properties. Unlike traditional timber, Accoya requires minimal maintenance to maintain its appearance. This process alters the wood’s cell structure, making it resistant to insects and fungi, preventing them from ingesting the material.

Accoya offers outstanding thermal efficiency, showcasing excellent thermal retention and reflection properties. Combined with double glazing, Accoya windows help reduce energy bills while ensuring year-round comfort.

The acetylation process also provides remarkable durability, resisting decay and harsh weather conditions. Its lifespan exceeds 60 years with little maintenance. Accoya has a lower carbon footprint than many alternatives and is sustainably sourced from fast-growing, FSC-certified pine in New Zealand. Its recyclability remains intact, as it can even be composted after use.

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

Putney sliding sash window installation

By blending timeless craftsmanship with modern technology, we can transform your home’s aesthetics while significantly improving its energy performance.

Our skilled team specialises in crafting high-quality timber double-glazed sash windows and casement windows, ensuring that each installation preserves the unique beauty of your home. We are dedicated to delivering exceptional craftsmanship and take pride in producing windows that not only enhance the visual appeal of your property but also contribute to its energy efficiency.

Matthew Carter

I’ve had 4 windows done by London Box Sash Windows now and every time the entire process from quote to installation is so smooth and stress free that I never bother to contact anyone else.The final windows are great quality and beautiful to look at and the work is always done in the timeframe agreed with the installations always carried out by very friendly and professional people.

Jody Torode

We are a returning customer of London box sash windows. Initially we went with them as they were the cheapest quotes however when we needed other windows to be replaced we didn’t approach any other company, we were so happy with the job they did the first time we wanted to use them again.I was fully informed about what to expect, given clear time scales and they were super helpful in providing information to support our planning application.There was a slight hiccup with the window not being quite right however this was resolved with no issue at all, another window was made and fitted within a few weeks.The fitters are really friendly, work hard and clean. They do an excellent job and I have no complaints what so ever!The whole service from start to finish has been really positive.

Jalon Quinn

All round excellent service from start to finish. Polite, efficient, took care with other parts of the property and cleaned up better than I could have done. Not the cheapest but worth the investment.

Sophie Rushton-Smith

Excellent team, really helpful. The new windows fit perfectly. No draughts, easy to open and close and high quality fittings. So good, we keep going back and have changed them all.

Joseph Webb

Had a set of windows fitted in two rooms, replacing old single glazed windows with new double glazed sash windows. The new windows are a marked improvement and are keeping the house much warmer and better insulated all round. Very professional all round and easy to deal with on fitting timeframes – super speedy fitting too!

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!

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

Acton
Barnes
Earls Court
Fulham
Roehampton
Wandsworth
West Brompton
Wimbledon

Do you need replacement sash windows or box sash windows in Putney? Contact our team now

We can provide a consultation and free quote for sash windows or casement windows. Please call [telme] or email [emailme].

Book a consultation for sash windows Streatham.