Derwent Sash Windows Ltd t/a Derwent Windows and Doors

Not cheap and pitched as a top of the range product we bought 6 sash windows and an external door for an old stone cottage. Throughout Derwent windows provided a clear, responsive and professional service, they managed our expectations and the team doing the installation were top notch. Time will be the real test of product quality but from the experience to date I have high hopes and no problems commending Derwent Windows for their delivery.

The sash windows of our Edwardian semi needed replacing. Our next-door neighbours had theirs replaced some years ago, by Derwent Windows, and have been very pleased with them. We thought they looked very good quality, as well as visually being almost indistinguishable from our originals. From the first contact with Derwent Windows through measuring, quotation, showroom visit to installation, the whole process has been excellent. All the staff have been friendly, helpful, knowledgeable and skilful. The quality of the windows and workmanship couldn't be bettered. We have already recommended this company to friends and neighbours, including those who have stopped to admire our windows and ask who did them!

We first used Derwent nearly 3 years ago to replace the door and windows at the front and then just recently to replace the rear windows. Both times they have been spot on and I would definitely recommend them without hesitation. As others have said, they came in slightly more expensive than other firms but their attention to detail on the fitting and finishing touches is outstanding. The first time, we had two windows knocked into one and they plastered, trimmed stonework etc and now you wouldn't know there was once two windows there. Second time they had a high window to replace on a stairwell but handled the challenge with ease. They are very friendly and super tidy, minimal touching up of paintwork needed. Thank you.

We have used this company before so we know how reliable and helpful they are. Obviously the schedule was interrupted because of the lockdown situation but we were kept informed about when the business could resume and we were given a new date as soon as possible. We were not disappointed, the work was done to a very high standard. Timekeeping was excellent and not a moment of the day was wasted. The room and outside area were left tidy and clean. I would have no hesitation using the company again.

The guys did a brilliant job... such careful work and attention to detail. They could not have been better. Felt the difference in the heat in the lounge immediately and the windows look great. Thank you so much for a very efficient, excellent job.

We had a new door and window fitted to a porch. The window and door were real quality products, a noticeable improvement over cheaper alternatives (you get what you pay for). Although the original installation date was missed (due to a problem at the manufacturers end), Derwent Windows pushed to get the door fitted before Christmas, which we were very pleased with. Thank you once again!

We are really pleased with our new replacement windows. The quality of the work is outstanding. Derwent fitters were friendly and helpful and worked very cleanly with no mess at all. The Windows have made a noticeable difference to warmth in the house. Love the look from the inside and outside. It wasn't the cheapest quote we had but certainly worth paying a little bit more for flush Windows. Wouldn't hesitate to use Derwent Windows again or recommend to friends.

We have just used Derwent Windows again to install more windows at our house, having been very happy with the first installation earlier this year. Once again the fitters were excellent, the windows themselves are superb and we would not hesitate to recommend them to anyine considerign quality window replacement.

High quality materials and finish. Very professional, knowledgeable and efficient. Work completed in the time specified. Fitters very pleasant and well-organised. House left clean and tidy every day. Admin staff very organised and helpful. End product entirely satisfactory.

Large project of over 40 windows/doors/bifold etc with differing styles from traditional sash at the front of the house to a more contemporary design to the rear undertaken through 4 phases of work over a three years time period and the customer service levels, professionalism and quality remained at a high level throughout this period. A lot of support around getting the correct specification from numerous meetings, use of the showroom and the prompt return of calls/enquires to clarify the smallest detail and the level of patience/support during the various project time periods was key. As the project was conducted over 3 years and four phases we had a wide selection of team members as well as some familiar faces working at our property but all set very high standards in terms of professionalism, cleanliness and quality of work. Snagging was a breeze as the team had already completed their own snagging list and kept us fully informed throughout the phase of each project. Just remains to say thanks and would highly recommend.