With nearly 40 years of experienced craftsmanship, we create the finest range of sash windows, casement windows and doors - bespoke and tailored to suit your needs. John Ellis started the business nearly 40 years, when he decided to take his passion for craftsmanship and joinery and create a window company based on offering the highest level of quality and service. With the help of his two sons, Patrick & Jack and backed up by a highly skilled team of craftsman London Box Sash has grown into London's leading premium window and door manufacturer.
With our factory situated in the heart of South London, London Box Sash Windows has been the South East's number one timber sash window supplier. In particular, the East Dulwich area, due predominately to positive recommendations. The map highlights the jobs we've completed over the past couple years. Here at London Box Sash Windows we're very proud to be East Dulwich and the South East's favourite sash window supplier. If you are a homeowner in East Dulwich or the South East and your timber sash windows are in need of replacing, we offer a free, no obligation on-site survey of your property and a full written quotation.
Our premium handcrafted, high-performance traditional timber windows and doors are a result of more than 30 years of continuous innovation and improved design.
Excellent service from London Box Sash, right from my first contact with Jack and Patrick. They were not pushy at all, and were genuinely interested in helping me solve the condensation issues I was having with my old windows. My fitter did an excellent job and reassembled my room for me after he had replaced the windows. I am totally thrilled with them, and can't recommend London Box Sash more highly.
We recently had all the sash windows replaced at the front of our Victorian house. They are really beautiful, each one a work of art! :- We had amazing service from start to finish. Both Audi and Angelo worked efficiently, turned up when they said that they would turn up, finished the job when they said that they would and left the place spotless. The windows not only look impressive but we've already noticed the difference with sound and heat. We could not recommend Patrick and his company enough.
Really great service, workman arrived on time, he made sure the whole room and floors were covered with dust sheets and he did the job quickly. The work he did was great and the window looks incredible - could not recommend enough!
A long overdue clean for some of the fleet!
So happy to see this Wimbledon house restored to it's former glory. Swipe to see what it looked like before
We are very proud to announce that we've partnered with One Tree Planted/ @onetreeplanted!
Thank you 🙌🏻 https://t.co/aNMz79fDT8
House in Lewisham complete with new timber sash windows😁 https://t.co/X8j4jFDtgY
Some feature Sash Windows installed one South West London last week https://t.co/v8XKYDhBrh
What a great local business. Check out @moxonsfreshfish if you’re ever in Clapham https://t.co/T4ieDk2sek
Delicious food and great service at @Mudcafes Tooting this morning! https://t.co/vNi6zYRON4
It's very important that every coat of paint we use is evenly sprayed to our timber windows. Each sprayed component… https://t.co/3q9ZEfSdpe
One of our installers has had his van broken into today between 2.45-3.00pm on East Sheen Avenue. Please let us kno… https://t.co/faVp9rQQNI
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