Timber Casement Windows for simple, elegant and timeless style
Timber Casement windows are standard in millions of homes, but ours are anything but ordinary. Available in a wide range of shapes, styles and sizes, with or without glazing bars in any colour you can think of, they offer exceptional performance and beauty in equal abundance.
Whether you live in a historic Grade II listed building or a contemporary new build, an Edwardian terrace or a medieval church conversion, our timber casement windows can be designed to match your requirements and those of the planning/conservation officer.
We offer Flush casements (or traditional) where the window or sash sits flush to the frame. We are proud of our Timber Flush Casement windows and their exceptional performance, thanks to our team’s excellent research and development skills and rigorous design process.
Learn about the benefits of timber casement windows
Weather rating
Our Wooden casement windows have been tested to an exposure category of 2000 – the highest classification
Exceptional thermal performance
A rated as standard; Triple glazed options available
Easily cleaned hinges
Fitted as standard on our wooden casement windows, allowing for easy cleaning from the inside
Sustainability at heart
Exclusively environmentally friendly designs, materials and processes go into the manufacturing of our timber casement windows
Acoustic performance
Great performance as standard and extensive test data to guide specification for optional enhanced acoustic performance
Security
Secured By Design and PAS 24 compliant
Astragal bars
Available in a range of widths and styles
Draught proofing (Wind load)
Dual seal design provides excellent draught proofing
Customise your wooden casement windows for a unique feel
With our ranges and options, we make it possible for you to achieve the exact wooden casement window aesthetic to meet your property style and desired outcome.
What are timber casement windows?
Also known as Wooden Casement windows, Timber Casement windows are standard in millions of homes; ours, however, are anything but ordinary. Available in a wide range of shapes, styles and sizes, with or without glazing bars, they offer exceptional performance and beauty in equal abundance.
Whether you live in a historic Grade II listed building or a contemporary new build, an Edwardian terrace or a medieval church conversion, our timber casement windows can be designed to match your requirements and those of the planning/conservation officer.
Timber Flush Casement Windows
We offer Flush casements (or traditional) where the window or sash sits flush to the frame. We’re proud to manufacture the finest wooden flush casement windows with exceptional performance, thanks to our team’s excellent research and development skills and rigorous design process.
Timber Casement window case studies
Find out more about how our wooden casement windows have transformed houses
CASE STUDY
Green windows for a “green house” – River House is a lesson in sustainability
CASE STUDY
“Casements and Cocktails” – the party house hosting George Barnsdale timber windows & doors
CASE STUDY
A cracker of a project – self-build in Lincolnshire
CASE STUDY
Racecourse Farmhouse project reaches final furlong
Timber casement window technical specifications
Performance and technical specifications are both available for our Timber Casement Windows.
Performance
| Thermal | As Standard | Best |
|---|---|---|
| U-Value | 1.3 | 0.9 |
| Energy Rating | A | A+ |
| g-Value | 71% | As Required |
| LT | 81% | As Required |
| Acoustic | ||
|---|---|---|
| Rw | 30dB | 41dB |
| Weather | ||
|---|---|---|
| Classification | 2000 (BS6375 Part 1) | |
| Air | Class 4 (EN 12207:2000) | |
| Wind | Class 7A (EN 12208:2000) | |
| Water | Class C5 (EN 12210:2000 Class C5) | |
| Operation & Strength | ||
|---|---|---|
| Classification | Pass (BS6375 Part 2) | |
| Security | ||
|---|---|---|
| PAS 24 / Part Q/ Secured by Design | Pass (as option) | |
| Sustainability | ||
|---|---|---|
| FSC Chain of Custody | Yes | |
CAD Drawings
| Design | Download Options | ||
|---|---|---|---|
| C2 - Flush Casement Window | |||
| 81 x 44mm | |||
| 81 x 59mm | |||
| 94 x 68mm | |||
| 94E x 59mm | |||
| 94 x 78mm | |||
NBS Data
| Design | Download Options | ||
|---|---|---|---|
| C2 - Flush Casement Window | |||
Performance
| Thermal | As Standard | Best |
|---|---|---|
| U-Value | 1.6 | 1.2 |
| Energy Rating | B | A |
| g-Value | 71% | As Required |
| LT | 81% | As Required |
| Acoustic | ||
|---|---|---|
| Rw | 30dB | 41dB |
| Weather | ||
|---|---|---|
| Classification | 2000 (BS6375 Part 1) | |
| Air | Class 4 (EN 12207:2000) | |
| Wind | Class 7A (EN 12208:2000) | |
| Water | Class C5 (EN 12210:2000 Class C5) | |
| Operation & Strength | ||
|---|---|---|
| Classification | Pass (BS6375 Part 2) | |
| Security | ||
|---|---|---|
| PAS 24 / Part Q | No (high security spec available) | |
| Sustainability | ||
|---|---|---|
| FSC Chain of Custody | Yes | |
CAD Drawings
| Design | Download Options | ||
|---|---|---|---|
| C2 - Historic Flush Casement Window | |||
NBS Data
Sorry, no NBS Data is available for this product yet, please contact us.
Performance
| Thermal | As Standard | Best |
|---|---|---|
| U-Value | 1.3 | 0.8 |
| Energy Rating | A | A++ |
| g-Value | 71% | As Required |
| LT | 81% | As Required |
| Acoustic | ||
|---|---|---|
| Rw | 30dB | 41dB |
| Weather | ||
|---|---|---|
| Classification | 2000 (BS6375 Part 1) | |
| Air | Class 4 (EN 12207:2000) | |
| Wind | Class 7A (EN 12208:2000) | |
| Water | Class C5 (EN 12210:2000 Class C5) | |
| Operation & Strength | ||
|---|---|---|
| Classification | Pass (BS6375 Part 2) | |
| Security | ||
|---|---|---|
| PAS 24 / Part Q | Pass (as option) | |
| Sustainability | ||
|---|---|---|
| FSC Chain of Custody | Yes | |
CAD Drawings
Sorry, no CAD Drawings are available for this product yet, please contact us.
NBS Data
Sorry, no NBS data is available for this product yet, please contact us.
Why choose George Barnsdale for Yorkshire Sash Windows?
As a family-owned business operating since 1884, crafting custom-made products to suit a wide variety of properties. Our timber casement windows are produced on-site.
We cater to diverse needs, serving residential, heritage, and commercial projects alike. Our timber casement windows are available in both classic and modern designs, ensuring the perfect fit for any style.
Find out more about our background as timber window and door specialists here
Made in Britain certification for quality
At George Barnsdale, we’re proud to state that we are Made in Britain certified. Having manufactured our own timber casement windows in our factory for many years, we provide top-quality British products to our customers, and we are a British-owned company.
Searching for our alternative styles?
Find out more about our range of timber windows and doors that we manufacture.
Peace of mind for the future with
timber casement window guarantees
Get in touch with us today for comprehensive support on wooden casement windows
George Barnsdale are proud to provide comprehensive expertise and support on our timber casement windows
For any queries around our wooden casement windows, get in touch with us today
Timber Casement Windows: Frequently Asked Questions
What hinge options are there?
If you are looking for a heritage timber casement window style, we can also provide traditional butt hinges rather than friction hinges.
Will they meet Part L building regulations?
Our timber casement windows are available with U-values of 1.2 W/m2K with double glazing and 0.8 W/m2K with triple glazing. This comfortably meets the Part L building regulations 2022.
Do you offer mock sash casement windows?
If you like the look of a regency sash window but need a more budget-friendly option, we can offer regency mock sash casement windows. These can be finished with decorative horns to provide an authentic sash window appearance.
View our timber casement window case studies and galleries to see how we have designed bespoke wooden casement windows to suit a variety of domestic and commercial projects across the United Kingdom.
What glazing options are available for timber casement windows?
Our wooden casement windows have multiple glazing options available, including double glazing, triple glazing, and acoustic glazing. We can also provide glazing features such as decorative glass, safety glass, and low-E glass to meet specific needs.
Each option is available with customisable frame finishes to match your design preferences, with many of our glazing options, such as low E glass, being energy efficient, which helps reduce overall energy costs and environmental impact.
How can I get a quote for timber casement windows?
To get a quote for bespoke timber casement windows, you can contact George Barnsdale directly. Our team will discuss your project requirements, help you choose the right options, and provide a tailored quote based on your specifications.
How energy-efficient are timber casement windows?
Timber casement windows from our manufacturers are designed to be highly energy-efficient. They feature double or triple glazing, weatherproof seals, and thermal insulation that help reduce heat loss and lower energy bills.
By combining the properties of timber with the select glazing options, our casement windows not only improve energy efficiency but also enhance the comfort and performance of any space. With sustainable timber sourcing and construction, these windows offer an environmentally responsible choice that doesn’t compromise on longevity.
Are timber casement windows suitable for listed buildings?
Yes, our timber casement windows are an excellent choice for listed and heritage properties, as they provide a classic look required by conservation standards. We also work closely with clients to ensure compliance with planning requirements in the UK.
