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 020 8648 4230.

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.

Get a quote

Drop us a line to discuss your windows

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.

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!

Nicholas Black

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.

D Pryer

Very efficient local team, first to book appointment and good contact from Judith in the office. Very thorough presentation from Jake and ability to offer a discount for speedy installation.Andy installed windows and he was professional & friendly. A very clean and methodical approach.They also have an after service care should anything happen which is very reassuring.I have already recommended them to two friends of mine.

edward Davis

I was very happy with the bespoke casement window they installed in my property. The company also agreed to repair it promptly after a number of years. London box sash install high quality timber windows and seem to care about their customers.

Dieter Gatzke

Needed a couple of old aluminium windows replaced with box sashes. Found recommendation for London Box Sash Windows Ltdon Which? Trusted Traders website (where they came top for our local area with over one hundred 5* reviews). Three days after the first phone contact, Jake came to our house to quote for the job. He took his time to take us through the various product options and even brought a sample sash window to demonstrate those options (all without any of the often quite annoying hard selling tactics). The quote price wasn’t cheap but within our expectations, and therefore we decided to go ahead with this company. We were given the option to either go for a scheduled installation date 10 to 12 weeks into the future or to go on a stand-by list. We opted for stand-by and a week later Harry (installation manager) visited to take the exact measurements for the window production and to reconfirm all the chosen options. About 2 weeks later, we were given an installation date.The actual installation was done by Andy over 2 days (1 day per window). On both days he started work at 7.30am, properly preparing the room with dust sheets and covering all carpets, before even touching his tools. He worked both days non stop until about 4pm. Andy was very pleasant to have in the house. He took the time to explain the details of the installation and patiently answered all of our many questions.The best, however, was the finished product. 2 gorgeous wooden box sash windows that are perfectly balanced, so that you can actually lift the solid and quite heavy sashes with just one finger!I wish that we had used London Box Sash Windows Ltdfor the replacement sash windows at the front of our house, a job which we had done about 6 years ago. Although those were of good quality, they are nowhere close to the ones that we had done just now.Without hesitation, I will recommend London Box Sash Windows Ltd to friends and neighbours and only keep quiet about this great company to the people I don’t like …

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 020 8648 4230 or email info@londonboxsash.com.

Book a consultation for sash windows Streatham.