With over 30 years of experience, Sash Window Experts specialises in the refurbishment and restoration of period windows across the South East. Whether working from our joinery workshop or directly on-site, we renovate original sash windows regardless of the property’s age or architectural style.

Our Specialist Services

We help homeowners retain the character of their property while significantly improving comfort and performance:

  • Slide Mechanism Repairs: Fixing sticking windows and failing weights.
  • Draught Proofing & Insulation: Eliminating rattles and cold spots.
  • Double Glazing Installation: Retrofitting modern glass into original timber frames.
  • Full Timber Refurbishment: Comprehensive woodwork restoration for historic homes.
  • Maintain your home’s classic features for years to come
Before and After windows

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

Sash Window Renovation With Proper Care

Our sash window renovation work helps improve tired, draughty or damaged windows while keeping their original character. The focus is on proper materials, careful repair work and long-lasting results.

Our Sash Window Renovation Process

Our typical renovation process includes:

1. Initial assessment of existing windows

2. Identification of repairs needed to frames, sashes, and mechanisms

3. Timber repairs using traditional methods

4. Replacement of cords, weights, and hardware where required

5. Draught-proofing and sealing to improve efficiency

6. Final adjustments and finishing

Sash Window Renovation vs Replacement

Renovation focuses on repairing and upgrading existing windows, while replacement involves removing and fitting new units.
For many period properties, renovation:

  • Preserves original craftsmanship
  • Avoids planning complications
  • Maintains architectural character

We advise on the most suitable option after assessing your windows.

When Renovation is the Right Option

Sash window renovation is usually recommended when:

  • The original timber frames are structurally sound
  • Windows are sticking, rattling, or difficult to open
  • Draughts or heat loss are an issue
  • You want to preserve period features
  • Replacement isn’t suitable due to planning or conservation rules

★★★★★
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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.

Benefits of Renovating Sash Windows

Renovating your original timber windows is often a superior alternative to replacement. Here is how a professional restoration by Sash Window Experts transforms your home:

  • Enhanced Energy Efficiency – Stop heat loss with integrated draught-proofing and slim-profile double glazing. Enjoy a warmer, draught-free home and significantly lower heating bills.
  • Structural Longevity – We treat timber decay using specialised epoxy resins and hardwood splicing. This restores the integrity of your sills and frames without the need for full removal.
  • Effortless ‘Easy-Glide’ Operation – By servicing pulleys, balancing weights, and installing modern high-strength cords, we eliminate sticking and rattling for smooth, silent opening.
  • Period Character Preservation – Maintain the authentic charm of your Victorian, Edwardian, or Georgian property. We meticulously match original mouldings and horn details—essential for Conservation Areas.
  • Cost-Effective Heritage Care – Renovation is typically more affordable than full replacement and avoids the structural upheaval of removing original box frames.
  • Improved Security & Acoustics – Upgrade to insurance-compliant locks and high-performance glass to enhance your home’s security and reduce external street noise.
Before and After

Sash Window Renovation & Repair: Frequently Asked Questions

Can old sash windows really be renovated?

Yes. Many original sash windows can be successfully renovated, even if they are decades (or centuries) old. Provided the timber structure is largely intact, our restoration process can return them to full functionality and beauty.

Is sash window renovation cheaper than replacement?
Do you work on listed buildings or conservation properties?
Will renovation improve my home’s energy efficiency?
Can you install double glazing into original period frames?
Can rotten window sills be repaired without replacing the whole frame?
How do you fix sticking or broken sash cords?
Are original sash window catches secure enough for insurance?