London Box Sash Windows Ltd

From initial contact to completion everything for my new box sash window installation was a great customer experience. In fact the whole thing was enjoyable, stress free and the windows are fantastic.

We used London Box Sash a few years ago for our London flat and despite having since left London we recently decided to use them again to replace some original sash windows in our new house after having such a great experience previously. I’m delighted to say that their quality and craftsmanship has remained exceptional. The quality of their product is second to none, their windows are genuinely fantastic. Everything is very clearly explained upfront by the team (Jake, Harry and Judith are all fantastic) and their fitters are so courteous and thorough. Raf was our fitter this time around and he was so knowledgable and friendly. We honestly cannot recommend them enough.

We had a loft extension with double dormer mansard windows fitted about 10 years ago. The timber windows windows did not last very well and we were looking to replace them. I came across London Box Sash Windows work on a house where my company Complete Kitchens ( a fellow Which Trusted Trader member ) was fitting a kitchen. The customer happily gave me their contact details and after submitting drawing to them for provisional costings we arranged for Patrick to come along and do a full survey and provide final costings. We opted for the 50 year guaranteed hard wood sash windows, which although not a cheap product we wanted something that would stand the test of time. Because we already had a scaffold in place and we’re paying rent on the scaffold the team at London BoxSash even fitted us in earlier than expected which was a great help. We are very pleased with the end product and their friendly and expert fitters . Nothing was too much trouble . We would have no hesitation in recommending them to friends, family or future clients. A great job by a great company. Thank you London BoxSash.

The London Box Sash Window company were fantastic they fitted two sash windows and one small casement window to my house. From start to finish they were so professional and friendly, Judith in the office was excellent, Harry who carried out the survey was so knowledgeable and fitted the installations around our schedule. The actual fitters were real crafts men. The windows are beautiful.

We decided to replace all the sash windows in our drafty Victorian house to improve insulation and thus reduce energy use. As it was a significant financial investment for us, we researched it thoroughly and London Box Sash came out as front runners. We are delighted we went with them. From start to finish, their service was highly professional and completely reliable. All of the staff from sales to installation were courteous and a pleasure to deal with. They explained the process fully and there were no nasty surprises. The installation team were amazing. They replaced 13 separate sashes in just four days. The windows look and feel very smart. Our house immediately feels warmer. We can now turn the heating off completely during the day. The degree of sound insulation is an unexpected pleasure too. I would definitely recommend this company.

We were recommended London Box Sash Window Company by our next-door neighbour and what a recommendation. The whole process from start to finish was excellent and the estimating installing and payment process was first class. The two large sash windows installed in our 1904 Edwardian house are very good indeed and the panes move up and down so smoothly and effortlessly. Already notice a huge difference in heat retention and noise attenuation. What more can I say except to mention our installer who single-handed put up and took down the huge dust curtains, set up a small workshop and in between installed the box sashes and touched up the paintwork. He worked a hugely long day but was always courteous - an amazingly skilful and conscientious technician. I highly recommend this company and their product. You will not be disappointed.

We are in the process of ‘future-proofing’ our home - let’s face it, with the rising cost of utilities, this is fast becoming a priority. We live in a flat in an old Victorian house with large, single-glazed, sash windows, several of which needed replacing, but deciding what with, was always going to be tricky; plastic windows would obviously be cheaper, but wouldn’t be in keeping with the house and so we looked around at who was making wood sash windows. There is no doubt that this is an expensive route to take, but given how long they last once they’re in, to not do it right first time seemed a false economy. We have so far replaced two windows with TBSW company and you really do get what you pay for; from the start and our first contact with them, we felt confident that we were dealing with people who knew what they were talking about, cared about what they did and were hugely positive about their product and justifiably - the windows are superb. Large, double glazed units that immediately cut the heat loss and sound from the outside and because of the perfectly balanced weights, can be raised and lowered with finger-tip control. The finish is beautiful and totally in keeping with the house. The care and precision with which their fitters worked - the place was spotless when they left - belies the amount of work involved and all the work is guaranteed. It has been a pleasure dealing with them.

I knew my windows and French Doors needed replacing to halt water penetration but the thought of work and mess of 2 large bay windows and doors being replaced filled me with dread. It need not have. From the initial measuring up, quote and work being carried out, the process was smooth. More so the work itself. There were no issues with the windows actually fitting and the installers were incredibly professional and efficient. My only job was coffee making and glad to do it. Plus the materials are first class. If you need this type of work done, seriously consider London Box Sash.

This is now the second time I have purchased windows from London Box Sash. The first window was two years ago and it still looks brand new. The service from London Box Sash is one of the best customer service experiences I have received. The quality of the product is also better than anything else out there on the market. The windows that we chose are Accoya timber, double glazed windows. Which were to replace our single glazed drafty original windows. We wanted to keep the character of the Victorian property but update to energy efficient windows. I would definitely recommend London Box Sash, you won’t be disappointed. Thanks

London Box Sash Windows replaced 6 single glazed windows in our Victorian terrace in Herne Hill with new double glazed wooden sash windows. They were the most competitive and transparent of the 3 quotes we got and the whole process was seamless from start to finish. From the initial visit from Jake, through the booking and billing process with Judith, we were impressed with their prompt responses and helpful attitude. The lead time we were given was spot on and, once we were given a date for the work to start, this did not slip. Audrius, who carried out the work, was hardworking, punctual, efficient and left the house spotless each evening. We couldn’t believe the quality of his work. We barely needed any touching up work from the decorator we had booked to help us afterwards. 6 windows were replaced and decorated in only 4 days, with minimum mess and disruption. Our house is now smarter, quieter and noticeably warmer.