Our draught-proofing seals can also be used on timber casement windows and doors as part of our renovation services.

We remove the window or door from the frame and check that the joints are secure by repairing with epoxy resin where necessary. The edges are planed to ensure an even gap around the perimeter and then a groove is routed to accept the draught-proof seal. By using our various-sized seals, we can ensure a snug fit between the frame and door or window.

A range of new locks and fittings are also available on request.

“A timber window or door that opens and closes with ease and is draught proofed to bring your period feature in line with the performance of a modern window”

To find out how we can help bring all the classic period features of your homes’ sash windows back to life as well as repair them to prevent draughts and noise ingress, contact our professional team of highly skilled craftsmen on 0800 197 0129 or fill out the form on our contact page and we’ll respond as soon as possible.

What Our Customers Say

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Melanie Simpkin
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Excellent work done by the whole team. Great customer service through the entire project. Thank you!
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Megan Russell
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We recently had all of our sash windows double glazed by Sash Window Experts and are very pleased with the whole process. Mark and his team were fantastic from start to finish. They were always on time, polite and incredibly considerate of being in our house. They did a fantastic job of replacing the old Victorian sashes with new double glazed units and we can't recommend them highly enough.
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Geoff P-W
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These guys fully deserve their 5 star status, the work that they do is exceptional. Having bought a new period property with windows that were in need of attention we contacted several companies, and chose Sash Window Experts on the basis of Mark’s original survey and quote. Mark showed his love for repair and restoration during the initial visit, and came up with options and solutions to look at windows and doors in our house. Work started on time, and was completed to a very high standard. Given the size of our project we had a variety of people on site at different times, all of whom were a pleasure to have around, and who have that same love for their craft that Mark has. A special shout out to John, who worked with us on a number of things, and always came up with a great solution. We’d highly recommend Sash Window Experts.
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Robert Lawder
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Mark, Lisa and their team - Steve, Matt, Ollie and Pete repaired 9 badly decayed sash windows on our Victorian house in a conservation area. The work was finished to high quality, beautifully done and beautifully painted. The team was careful and considerate throughout. They kept to time and came in slightly under the quote value, accounting for elements of the original frames that they were able to repair rather than replace. I would wholeheartedly recommend them for work in a heritage setting.
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Simon Pugh
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Sash Windows Experts did a fantastic job replacing our Victorian sashes. The quality of the work and the professionalism of the team was outstanding. Many thanks, Mark and the crew!
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micaela hobbs
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I cannot praise this company enough. Mark and the entire team, who renovated all the rotten, old and drafty sash windows in our small flat, have been amazing. Gary, Steve and Ollie were, without exception, professional, courteous, great craftsmen and clean and tidy. The quality of the windows, both from the workshop and on site renovations is excellent and the style exactly as the old windows once were. Communication was also easy. I can highly recommend this company. Thanks to all the team.
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Tony Kendall
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So glad we used Sash Window Experts for our job….replacing old window sashes for new double glazed ones. Gary and Steve are great craftsmen and lovely people. We would certainly use this company again, and highly recommend it to others.
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Robert Hamberger
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This is the second time we have used Sash Window Experts, and we went back to them for hardwood double-glazing of our second bay window because we were so pleased with how professionally they worked previously, and the excellent results. They were prompt and attentive as ever - real experts in their field. We're delighted with the standard of their work, and would highly recommend them. The windows look great. Update: We have now (May 2024) used Sash Window Experts for the third time for hardwood double-glazed sash windows for our kitchen and second bedroom, to complete window renovation in our flat. They're as professional as ever, prompt and efficient, clean up well after themselves and the work was completed to a high standard in two days, as they said. We continue to recommend sash Window Experts.
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Michael Bennison
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A very professional job, carried out to a high standard. No problems and courteous and pleasant craftsmen. "Did what it says on the tin" Mjb

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48 Reviews

Arrange a No-Obligation Survey With Mark

Hi, I’m Mark, owner of Sash Window Experts. I’d love to talk to you about restoring period windows. Please fill out the form or call me on 01403 602701 to arrange your FREE no obligation window survey and to discuss your requirements.

Frequently Asked Questions About Casement Windows & Doors

Do you restore timber casement windows and doors?

Yes, we restore timber casement windows and doors as part of our specialist renovation services. We work on period properties across Sussex, Surrey and Kent, helping to improve the operation, fit and comfort of traditional timber windows and doors.

Our craftsmen can restore timber casement windows and doors to smooth, draught-free operation while retaining the character of the original feature.

Can timber casement windows and doors be draught-proofed?
How do you draught-proof casement windows and doors?
Can you repair damaged timber on casement windows and doors?
Can you replace locks and fittings on casement windows and doors?
Do you restore casement windows and doors across the South East?