Conservation Sash Windows

Double Glazed Wooden Sash Windows
Restoration and Replacement

The Conservation Sash Window Company

At Conservation Sash Windows, we specialise in exactly what our name says. We’re experts in replacing double-glazed sash windows in listed buildings or houses in conservation areas, where preservation and aesthetics matter even more than elsewhere.

You don’t have to live in a conservation area, though, to benefit from our expertise, or even have a sash window. We offer a range of services for all kinds of doors and windows, and we’ll apply the same values and the same attention to detail whether your home was built in the 16th century or in the 21st.

Our Values

Conservation Sash Windows is dedicated to using the best of up-to-date technology to preserve the best of traditional aesthetics in buildings. Our expert craftsmanship, from more than 50 years of combined experience in the building and construction industry, meets the exacting regulations for preserving the windows in listed buildings and those in conservation areas. At the same time, we use the best double-glazing and other draught-excluding techniques to make sure you can enjoy the heritage of the past without its inconveniences.

Aesthetics aren’t restricted to ancient buildings, though. If you want to give a more modern house the elegance that comes with traditional sash windows, we’ll apply the same traditional values of craftsmanship as we would in a conservation area. No customer of Conservation Sash Windows has to settle for second-best.

Our Services

We’re specialists in replacing double-glazed sash windows and we can replace sash windows using your existing box frames, preserving the architecture of the building. Our windows are unique, with 33mm double-glazed sashes in thickness and a box width of 125mm, complying with part L building regulation.Matching your existing window profiles, we can replicate your windows with slender-fit double-glazing units to upgrade your home with the latest energy-saving glass. At the same time, we maintain the aesthetics, style and character of your windows.

What our customer say about us

Window fitter / Conservatory installer

The quality of their product is very good i had my sash windows refurbished (they were in a dire condition, rotting and non-operational). They look new now. the professionalism on their part is also very good – quick turnaround time, communication, well set out quotes and emails. would definitely recommend



Carpenter / Joiner

Firstly the windows were great. Sash windows are notoriously expensive but we were surprised when Gary came over that we could get top end hardwood windows in our budget. Our previous windows were in quite a state and the building slightly wonky but they did a fantastic job to put in some really beautiful windows. The guys were here for 3 days and took us through each stage of the work. Eye opening to see all the work that goes into them. Real attention to detail. Great chaps. Lovely new windows!



Window fitter / Conservatory installer

No problems at all.



Window fitter / Conservatory installer

Gary and his team delivered excellent quality windows which look brilliant. We were really happy with every aspect of the job and wouldn’t hesitate to recommend The Conservation Sash Window Company (which I already have done!).



Window fitter / Conservatory installer

Trustworthy. High Quality. Friendly. Had a great experience with Gary – delivered both a great service and product. Would highly recommend to anyone and will be looking to work with him when there is any need in the future!!



Carpenter / Joiner

The team did an outstanding job with our ageing sash windows. The workers are well-trained and really know the sash pulley mechanisms. New beading and felt created good seals all around; the reduction in draughts and rattling in windy conditions is remarkable and we are able to run out boiler at a much lower temperature setting.



Window fitter / Conservatory installer

Gary Baker and his company/collaborators/partners are just the best people you could ever choose for installing and replacing your windows. They are simply exceptional. In only 4 days they replaced my bay window and bedroom window, replacing the rotten wood and installing a brand new hardwood window. The drought-excluder technology is fantastic, the double glazed and sound-proof glass are incredible. My flat won’t be the same as before. Guys thank you!



Carpenter / Joiner

Excellent job. Thoroughly recommended



Window fitter / Conservatory installer

Gary’s team of Richard and Tom were excellent workers,skilful,clean,tidy,considerate,knowledgeable and helpful. Richard is an experienced carpenter,Tom ,Gary’s son was his willing assistant/painter. My 2 original front sash windows bays ,were replaced with identical new double glazed units, made of sepple hard wood. Gary explained everything to me before hand and kept me informed of progress. His quotation was clearly set out and easy to understand. I would recommend this company.



Window fitter / Conservatory installer

Gary and his team did a brilliant job restoring and replacing my old window with double glazed sashes. Right from the start Gary was quick to reply to my emails, easy to deal with and came straight over to look at the job. Richard and Tom carried out the work and completed the job without running over. The workmanship is excellent, the result is better than I could have expected. I will definitely be using Gary again. Thanks again!



Carpenter / Joiner

Had two wooden sash windows replaced, and everything was of the highest quality from the initial advice to the timely and precise execution of the job. Couldn’t have been better, and I give Gary and team my highest recommendations. Excellent.



Carpenter / Joiner

I am absolutely delighted with the work of Gary and the team and I definitely recommend them. The work was completed on time, on budget and to an exceptionally high standard. They specialize in double glazing period windows in listed buildings and conservation areas and use high spec materials that both satisfy even the most stringent conservation area planning regulations and provide massively improved thermal efficiency. Yet surprisingly, their prices compare favourably with other firms.



Window fitter / Conservatory installer

Gary and his team did an amazing job. The service was so quick and the workmanship was excellent. Gary was really knowledgable and listened to our needs and requirements and gave us a great price. We needed the work done quick as our baby was due and Gary managed to accommodate us which we appreciated. Had so many lovely comments from neighbours. Will be using them again soon!



Window fitter / Conservatory installer

Gary didn’t undertake the job his son did. He turned up on time and were polite and tidy. There was an issue with the draft exclude needing refitting which they came back to do. Only one thing was the finish of the details of the windows but I understand this is as they were so old they couldn’t do much else however I would have liked to have been informed of this prior to starting the job. Overall very good though.



Window fitter / Conservatory installer

Gary and Tom were great. Very flexible with dates/times to quote and do the work. Great communication throughout the process. We chose to use them because of their extensive knowledge and experience of Warner flats in the area. The work was done to a great standard and we are looking forward to getting back in touch in the near future.



Window fitter / Conservatory installer

Excellent service and product.



Carpenter / Joiner

First class in every respect!



Contact Us

The Conservation Sash Window Company can help you with all sash windows and bespoke window replacements

We are a CERTASS approved window & door installer

Your bespoke windows are crafted in UK workshops

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