What Our Clients have to say

Excellent Product Choice
Excellent Customer Service
Excellent Workmanship

Derwent fitted wooden sash windows into our Victoria House. We did not have all the windows replaced as we had renovated some ourselves, the quality and look of our new windows is amazing. They are an exact replica of the originals. We made a great choice when deciding to choose Derwent Sash Windows.

Our neighbours had used Derwent and told us how good they were.   They are the most reliable company I can recall dealing with, coming out when they said they would, and giving us a clear date for installation well in advance which they adhered to.   The quote came as a bit of a shock but after doing some research I realised I was getting a quality product which if we wanted we would have to pay for   We were on holiday when they did the installation but they contacted us to let us know of 2 leaking radiator pipes which were a result of my botched DIY attempt the previous week.   I couldn’t get hold of a plumber but they fixed them for us which was over and above what I’d expect of anyone.

Rob and the team at Derwent Sash were a pleasure to deal with, the professionalism, quality of work and products are second to none.    We are extremely pleased with the service and the windows we had installed, it’s truly transformed the appearance of our property and added that extra quality and kerb appeal that we couldn’t get from any other local window supplier.   Thank you Derwent Sash!

The quality of the windows was excellent and the installation outstanding ,100% delighted .

Fitting new windows in a Victorian house was a daunting project for my wife and I but we were pleasantly surprised by the excellent level of professionalism demonstrated by the team from Derwent Sash Windows.  As expected there were problems but nothing phased the fitting team who took everything in their stride, and left everything in excellent shape when they had finished. The windows themselves are excellent quality and have transformed the overall appearance of the house.I would have no reservations in recommending Derwent Sash Windows.

I would highly recommend Derwent Windows.  I have been in a dilapidated Victorian terrace for almost a year and had numerous quotes given. I knew that new windows would transform my home but particularly wanted one company to do all the work but also provide original looking 0 maintenance windows that itself was a challenge with previous quotes for bricking up doors and adding an extra window became very complicated with subcontracting involved. That for me was the deciding factor in choosing Derwent they did everything not to mention the supply of the most stunning Upvc sliding sash windows and a French door from a window. The brickwork and finishing by Mick is superb and he went above a beyond my expectations. Thanks to the whole team at Derwent. Kind regards Jane Greyson

We are so happy with the windows! I have spent a very happy few minutes shutting and locking them for the night just now, and it gave such a warm sense of peace and security. Our builder Ivan is really impressed, and we’ve already been getting people asking him and us where they are from! And please thank your two guys, Mick and Andy,. They were really professional and very friendly and nice to have around

I have now had all the windows in my house replaced with Evolution Flush windows. They look great in a 1920’s house and are thermally very efficient. All personnel involved, from the surveyor, to the office staff and the fitters were superb. Nothing was too much trouble. They are not the cheapest but you get what you pay for. A pleasure to deal with. Highly recommended.

We had our upstairs windows replaced by Derwent earlier this year and everything about the process has been first class. The products are excellent, the workmanship of a very high standard and we absolutely delighted with the results.    People have been stopping us in the street as we leave the house to ask us about our lovely new windows.    From our initial enquiry through to the end of the installation we couldn’t fault anything and look forward to returning for the rest of the windows as soon as possible.

We have a period farmhouse and needed to replace the old single glazed wooden sash windows. Derwent installed Bygone collection UPVC sash windows for us and we are really, really impressed with the windows. The proportions ensure that they look wooden and are in keeping with the property. The compliments from visitors have already started and people are surprised to find they are UPVC. Andy and the team were super. Hard working and also tidy workers, something I have learnt is not common place with workmen! The quality of the finish is very impressive, thank you!