To request a quote for windows, doors or a roof lantern contact info@westburywj.com or call 01245 326510
Timber windows
Drive down any street, and the houses that stand out are always the ones with well-proportioned windows and carefully considered details. Timber windows, when properly designed and set back into the structure, add depth and character.
Our wooden windows are made from engineered timber, designed and manufactured as complete frame-and-sash units with a hand-crafted finish. Timber windows are a core element of British architecture, especially across Georgian, Victorian and Edwardian eras. We maintain an elegant touch with all our windows, keeping functionality and design at the heart of any project we undertake.
We are a UK-based timber window manufacturer and have been supplying windows across the nation for over 30 years. Every window we create has been designed for that specific property, constructed in our factory based in South Woodham Ferrers, Essex.
This range includes timber casement windows, timber sash windows, and timber French windows. Each style is designed to suit different types of architecture and periods, and we take the setting and planning requirements of any property into account during consultation.
All our wooden windows are created using a combination of Accoya and European Redwood, fitted with double glazed or vacuum glass seals as standard. We then finish each window with a water-based, microporous paint designed to move with the timber, ensuring the wood is protected from water ingress and extreme weather elements.
TRADITIONAL Casement windows
Balancing style and practicality, our traditional casement windows add character and depth to any property.
discover moreSPRING BALANCE SLIDING SASH WINDOWS
A practical alternative to traditional sash designs, delivering the same period aesthetic with an easier opening mechanism.
discover moreBOX SASH WINDOWS
Ideal for period properties, our box sash windows combine classic charm with modern performance.
discover moreFRENCH windows
With their elegant proportions and absence of a central mullion, French windows provide unobstructed views and abundant natural light.
discover morePaint
The paint that coats our timber windows is of vital importance. The technology that goes into modern paints means that when applied correctly, these will add years to windows and doors. After application the water evaporates, leaving a highly durable and protective plastic layer behind.
more infoGLAZING
Westbury standard glazing is 28mm thick, utilising a choice of glass types dependent on energy, acoustic, security or privacy requirements.
TIMBER
We use 68mm timber in all our external windows, compared with other manufactures who tend towards 58mm. This improves their acoustic and thermal performance.
more infoSECURITY
All Westbury windows offer excellent security as a standard, with multi-locking system. This enables our windows to pass PAS24 standards and meet Part Q of Building Regulations. They are crafted from sturdy materials and include top quality British ironmongery, making forced entry a formidable challenge.
more infoDESIGN
What makes Westbury WJ so unique is that we do not opt-out of the detail for ease and speed of manufacture when it comes to design. We take the time to craft flush joints, sharp edges, and traditional mouldings.
more info
Timber Casement Windows
Casement windows are a commonly used window used across the UK in properties ranging from new builds to period properties. It is a side-hung or top-hung window that opens outward on hinges, providing ventilation to the room and an unobstructed opening.
Our timber casement windows are made with your property in mind, with the frame width, glazing bar pattern and position tailored to the home.
Wooden casement windows can be configured with fixed lights, opening lights, or a combination, and are available in both traditional or flush casement depending on the property’s architectural style.
Timber Sash Windows
A wooden sash window is often closely associated with Georgian, Victorian, and Edwardian architecture, and is a design of window that can be required in conservation areas and listed buildings. Timber sash windows have two panels that slide vertically within a frame, counterbalanced by either a weights-and-cords system, or a spring mechanism.
We have two types available: box sash windows, which use the traditional weights-and-cords system housed in a concealed box frame, or spring-balanced sliding sash windows, which use a spiral balance. The ideal choice will depend on the property type, the depth of the wall reveal, and the age of the home.


Timber French Windows
French windows and their design date back to 16th century France, providing an artistic touch to the architecture. These windows open as a pair with no central mullion, creating an unobstructed opening, and a clear view to the inside and outside. Typically, they are best used for garden access, balconies, or where the property will benefit from wide views and natural light.
These windows don’t have a central post, which means the frame proportions and materials need to work harder structurally, which is where the timber works best. Our engineered timber frames can support larger pane sizes, all while maintaining slender sightlines and the intended aesthetic.
Glazing and Performance
With all timber windows, we offer double-glazed windows as the standards, holding sealed units filled with argon gas and low-emissivity glass. If you require higher thermal insulation, we also offer vacuum sealed glass as an alternative. Specifically with sash windows, we highly recommend vacuum sealed glass for sash windows to accommodate the frame.
Regardless of the window design you choose, you’ll receive a timber window frame that provides natural insulation. Combined with high-specification sealed units, the U-values meet or exceed the requirements of Part L of the Building Regulations.
We test each frame independently, ensuring they meet the acoustic, weather, and security performance of current British and European standards.
Materials and Finish
All our wooden window frames are manufactured using a combination of laminated modified Accoya and European Redwood timber. This timber is knot-free, bonded, and laminated to achieve a strong finish.
Accoya is present on the exterior and window sill, which is rot-resistant and dimensionally stable, and European Redwood makes up the interior except the sill. This combination creates a strong structure that prevents water ingress and built-up moisture, whilst also enhancing its thermal insulating properties.
The paint applied to each window frame is a water-based, microporous paint, which is applied in a three-coat spray finish, measuring 180 microns approximately. This is roughly four times thicker than a typical brush-applied coat, designed to flex with the timber to prevent cracking and moisture trapping.
As a result, you have heritage timber windows made to keep the inside of your home free from moisture, and only require repainting every 12 years.

Serving Essex, London and the South East
Our factory and showrooms are based in South Woodham Ferrers, Essex, where possible we always attend projects personally across rather than remaining remote. We attend site visits, surveys, and installations, which are all handled by our team of experts who design and manufacture the product without involving third parties.
For over 30 years, our timber windows have been supplied and installed across the nation from our base in Essex to London, South East England, and further. Our recent projects include replacement timber windows and a roof lantern for a property in Essex, and a full renovation with timber sash windows for a London property.
Thanks to our experience with local planning authorities, we’re able to smoothly navigate the approval process alongside you. If you’d like to see more of what we’ve done, please take a look at the latest projects below.
Explore our Timber Windows
Ready to begin your next project? If you would like to know more about the type of windows you need or require an accurate quote, please fill out the form below to get in touch with one of our experts and start the consultation process.
Get in TouchFrequently Asked Questions
The cost of timber windows depends on the window type, size, glazing specification, glazing bar pattern, timber species, and paint finish. Casement windows are generally less expensive than sash windows because their mechanisms are simpler. Double-glazed units cost less than triple-glazed or vacuum glass units. Quotations are based on the specific requirements of each project rather than a fixed price list.
Timber windows are made from engineered timber, manufactured as complete frame-and-sash units. These include casement windows, sash windows, and French windows, each suited to different architectural styles and periods. Timber has been the standard material for window construction in the UK for centuries and remains the preferred choice for period properties, conservation areas, and architecturally considered new builds.
Timber windows that are properly manufactured and maintained have a long service life. Wood Window Alliance-standard timber windows have an estimated service life of around 60 years. Factory-applied microporous paint systems typically require repainting only every 10 years, and engineered timber resists the warping and shrinking that can affect solid wood over time.
Timber windows that are properly manufactured and maintained have a long service life. Wood Window Alliance-standard timber windows have an estimated service life of around 60 years. Factory-applied microporous paint systems typically require repainting only every 10 years, and engineered timber resists the warping and shrinking that can affect solid wood over time.
Westbury Windows & Joinery manufactures timber windows at its factory in South Woodham Ferrers, Essex. Projects are delivered across Essex, London, the South East, and nationally. The factory and showroom is available for visits by appointment, which you can book with a member of our team today.
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Westbury products are independently tested by
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Should you need more information please contact the sales and spec team on info@westburywj.com
Visit the Architects pageWhat types of windows do Westbury have in their collection?
Download our brochure for more information on specific ranges. In here, you will find a variety of unique, premium timber window products.
Are Westbury windows long-lasting?
Westbury windows are manufactured with durability in mind. All the products we use and processes we go through in the manufacturing process prioritise long-lasting performance on our window products.
What colour ranges do the Westbury window finishes come in?
Take a look at our unique, custom-made Westbury colours, thoughtfully designed to elevate every home’s interior look.