Sash windows have been a staple of British architecture for over 300 years. Their timeless design and elegant proportions have graced Georgian townhouses, Victorian...
BESPOKE WOODEN WINDOWS AND DOORS
Cavendish and Cole Sash Windows Sussex offer all aspects of sash window installation and restoration, timber doors and bespoke joinery.
Cavendish & Cole
Timber Windows & Doors
Sash Windows Sussex
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Sash Window Draught Proofing and Double Glazing
Invisible protection. Noticeable comfort.
Original timber sash windows bring timeless character to your home—but they’re not always known for energy efficiency. Over time, natural movement, paint build-up, and ageing frames can cause gaps that let in cold air and outside noise.
At Cavendish & Cole, we offer specialist draught proofing for sash windows—a discreet, effective upgrade that significantly reduces heat loss, rattling, and external noise while preserving the beauty of your existing joinery.
Whether your home is a Georgian townhouse, a Victorian terrace, or a listed property, we provide a tailored service that respects tradition while improving comfort.
What causes it—and how we help prevent it
Condensation on or around your timber sash windows can be frustrating, unsightly, and even damaging if left untreated. At Cavendish & Cole, we help homeowners across Sussex, Kent, and Surrey understand and manage condensation—while preserving the beauty and integrity of their period windows.
From upgrading single to double glazing with Slimlite units to improving ventilation and draught-proofing, we offer discreet, heritage-appropriate solutions to reduce moisture build-up and protect your home.
Modern comfort, traditional charm—without replacing your windows
Upgrading your sash windows doesn’t mean replacing them. At Cavendish & Cole, we offer a specialist single to double glazed upgrade service—carefully transforming your existing timber sashes into high-performance, energy-efficient windows, while preserving the character and craftsmanship of your period property.
Whether you live in a listed building, conservation area, or a cherished Victorian or Georgian home, our discreet upgrade solutions deliver the warmth and comfort of modern double glazing, without altering the heritage aesthetics that make your home unique.
Discreet double glazing designed for traditional sash windows
When it comes to upgrading sash windows in period or listed properties, finding a glazing solution that delivers energy efficiency without compromising aesthetics can be a challenge. At Cavendish & Cole, we specialise in Slimlite double glazing—an ultra-slim, heritage-approved glazing system ideal for Victorian and Georgian sash windows.
Slimlite is the go-to choice for homeowners, conservation officers, and architects alike. It preserves the appearance of traditional single glazing while offering the comfort, insulation, and efficiency of modern glass technology.
Exceptional durability. Classic beauty. Crafted to last.
At Cavendish & Cole, we take pride in creating timber sash windows and doors that combine heritage design with cutting-edge performance. That’s why we recommend and work extensively with Accoya® timber—a revolutionary wood that’s perfect for both traditional and contemporary joinery.
Used across our bespoke windows, doors, and shutters, Accoya offers unbeatable stability, sustainability, and longevity—making it an ideal choice for homeowners who want timeless style without the upkeep.
Soundproof comfort, beautifully preserved character
Living in a bustling town, near a main road, or under a flight path doesn’t mean you have to sacrifice peace and quiet—nor the classic style of your sash windows. At Cavendish & Cole, we specialise in noise reductive glazing for traditional timber sash windows, offering a discreet yet highly effective way to block out unwanted sound.
Our acoustic glazing solutions are ideal for period homes, modern properties, and even listed buildings where keeping original aesthetics is key.
Our Accreditations
Sash Windows Sussex
Frequently Asked Questions
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Can’t find the answer you’re looking for? Write to us at info@cavendishcole.co.uk or contact us on 01273 123456
Sash Windows Sussex
Our Design Process
At Cavendish & Cole Sash Windows Sussex, our design and installation process is built around precision, communication, and respect for your property. We begin with a detailed site survey to understand your needs, followed by the design of bespoke windows or doors that reflect your home’s style and history. All joinery is handcrafted in our Sussex workshop using traditional methods and high-quality timber. Installation is carried out by our own skilled team—never subcontracted—ensuring seamless fitting, minimal disruption, and the highest standards of finish. We take care of every detail, from glazing and hardware to painting and aftercare, for results that truly last.
Sash Windows Sussex
Experts in Timber Sash Windows and Doors
At Cavendish & Cole Sash Windows Sussex, we specialise in the design, manufacture, restoration, and installation of bespoke timber sash windows and handcrafted wooden doors across Sussex, Kent, and Surrey. Whether you’re looking to restore your original sash windows, upgrade to Slimlite double glazing, or commission custom timber doors, our skilled joiners and installers deliver unrivalled craftsmanship and attention to detail.
With decades of experience in traditional joinery and heritage restoration, we work on Victorian, Georgian, and Edwardian sash windows, sympathetically maintaining the character of your property while improving comfort, efficiency, and security.
We cover towns including Brighton, Hove, Eastbourne, Hastings, Worthing, Crawley, Bognor Regis, Chichester, Horsham, Haywards Heath, Lewes, Seaford, Bexhill, Uckfield, and Tunbridge Wells, with popular postcodes such as BN1, BN3, BN20, TN34, and RH12.
Our sash window services include everything from the manufacture and installation of wooden sash windows, to the supply of double glazed sash windows, discreetly integrated using Slimlite or Pilkington Spacia glass. We also offer single to double glazed upgrades, as well as glazing solutions tailored for listed buildings, carried out in line with English Heritage standards. In addition, we carry out full sash window repairs, draught proofing, and offer discreet yet robust security solutions. Other specialist services include condensation prevention, noise-reducing glazing, and a wide range of patterned and obscure glass options to suit any period or interior style.
In our Sussex-based joinery workshop, we produce a wide range of bespoke joinery, including timber windows and doors, using premium-grade Accoya and oak. We also design and craft custom wooden shutters, timber mouldings, and provide a smooth factory paint finish. All final details, including handles, fasteners, and latches, are covered by our extensive selection of window hardware.
For larger or specialist projects, we offer expert support with planning applications for replacement windows, supply full documentation for our environmental policies, and accept commercial tenders for residential and public sector developments.
From initial design and site surveys to complete installation, Cavendish & Cole delivers timeless style, heritage expertise, and long-lasting performance.
Reviews
Positive comments from satisfied clients
Lewes, Sussex
We couldn’t be happier with the service from Cavendish & Cole. From the initial consultation to the final installation, the team were professional, knowledgeable, and clearly passionate about their craft. They replaced several sash windows in our Victorian home, perfectly matching the original profiles while upgrading to Slimlite double glazing. The quality of the joinery is outstanding, and the finish is immaculate. The installation team were tidy, respectful, and a pleasure to have around. It’s rare to find a company that combines traditional craftsmanship with modern efficiency so well. We wouldn’t hesitate to recommend them to anyone. Absolutely first-class.
Brighton & Hove, Sussex
We used Cavendish & Cole to restore the original sash windows in our Georgian property and were blown away by the results. The team carefully repaired damaged timber, installed discreet draught-proofing, and even upgraded the glazing—all while preserving the character of our home. They were punctual, courteous, and clearly took pride in their work. Communication was excellent from start to finish, and everything was completed to a very high standard. It’s a relief to work with people who genuinely care about heritage. Our windows look beautiful and function perfectly. Highly recommended to anyone looking for true craftsmanship.
Eastbourne, Sussex
I chose Cavendish & Cole after a friend recommended them, and I’m so glad I did. They designed and installed a bespoke front door and two new sash windows for our Edwardian home. The attention to detail is second to none—everything from the ironmongery to the paint finish is flawless. The fitters were polite, tidy, and extremely skilled. It’s rare to find a company that delivers on every promise, but these guys really do. Our house looks better than ever, and we’ve already noticed it’s warmer and quieter inside. I wouldn’t hesitate to use them again. Brilliant service all round.
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