Tested and certified timber windows and doors trusted by architects, contractors, and developers.
Across the built environment, professionals are under pressure to deliver low‑carbon buildings, meet tightening procurement standards, and reduce long‑term liability – all while protecting programme certainty. With decades of experience working with the UK’s leading architects, contractors and developers, we deliver premium window and door solutions for projects of all sizes – from commercial refurbishments through to heritage restorations.
We understand the challenges involved in replacing timber windows and doors – from contractor installation risk to architect design responsibility and estate maintenance exposure. Because no two projects are the same, we provide expert guidance at every stage of the journey. From design and specification through to manufacture, delivery and installation, we help ensure your project stays aligned with its vision, programme, regulatory requirements, and performance objectives.
Choose your profession
Architect
Whether you’re navigating listed building consent or require support in attaining project sustainability and wellbeing goals, we help you deliver performance without compromising architectural integrity. From the earliest design stages to performance data, we are here to support you.
Contractor
We work with Tier 1 and Tier 2 contractors across the UK, delivering made‑to‑measure timber systems that support programme productivity and reduce risk. With supporting test evidence and performance guarantees, our windows and doors minimise future claims exposure.
Developer
We help developers meet commercial objectives while aligning with responsible procurement, circular economy principles, and building accreditation standards such as BREEAM. Through a partnership approach, we help developers deliver buildings that perform.
Why choose George Barnsdale?
Made in Britain
UK manufacturer operating at the same site since 1884.
Bespoke solutions
Tailored to you and your specific project requirements.
Technical expertise
Our knowledgeable team can help you get it right first time.
Heritage capability
Our passion for preserving the UK’s architecture means we are often willing, where others may not be, to manufacture niche products.
Sustainability
We take a proactive approach to manufacturing to ensure we protect, conserve and minimise the environmental impact of our products.
Project support
We offer complete project support from design to installation to ensure everything runs smoothly.
Quality assurance
Tested and certified high-performing, long-lasting timber windows and doors.
Explore our commercial projects
From a retrofit project for the “finest business address” in London to the redevelopment of the former US embassy, explore how we have helped building professionals like you on their timber windows and door projects. From a retrofit project for the “finest business address” in London to the redevelopment of the former US embassy, explore how we have helped building professionals like you on their timber windows and door projects.
CASE STUDY
Hamilton House – 1880s Charm meets Modern Safety with New Fire-Resistant Windows
CASE STUDY
Finest windows for the “finest business address” – Twenty Berkeley Square
CASE STUDY
Former Covent Garden seed merchant’s building blossoms with George Barnsdale windows
CASE STUDY
Cool Kampus project cottons on to timber windows & doors – Minto & Turner Building
Sectors we cover
We have worked on a range of projects over the last 140 years across a range of sectors, including:
A Complete Service
Site surveys
With our expert team available to conduct thorough site surveys, we can support you from the very beginning of your project, helping you provide accurate measurements for the quotation stage and spot potential challenges along the way.
Technical support
Whether you need a quick answer to a question, or an in-depth consultation, our team of experts are available to support you every step of the way.
Installation
We offer an in-house installation service for commercial projects. Our team of experienced installation staff have worked on some of the most prestigious timber windows projects in London.
Project support
We have a talented and experienced project management team who invest time into supporting you at every stage of the project to ensure you meet project timeframes and adhere to specific project requirements.
Manufacturing & Craftsmanship
Our Process
Useful resources
Frequently Asked Questions
Are George Barnsdale’s timber windows and doors ethically sourced?
All our products here at George Barnsdale are specially crafted using sustainably sourced timber, and we are committed to using timber that is FSC certified. This certification ensures the wood used in our timber windows is from forests where biodiversity and ecological balance are protected.
If you’re looking to use responsibly sourced wood for your next building project, look no further than our bespoke timber windows and doors. Professionals and homeowners can contact a member of our team, who can provide further information on how we source, prepare, and quality check our timber windows for an attractive and long-wearing final build.
For more general queries answered by our specialists, visit our FAQs page.All our products here at George Barnsdale are specially crafted using sustainably sourced timber, and we are committed to using timber that is FSC certified. This certification ensures the wood used in our timber windows is from forests where biodiversity and ecological balance are protected.
If you’re looking to use responsibly sourced wood for your next building project, look no further than our bespoke timber windows and doors. Professionals and homeowners can contact a member of our team, who can provide further information on how we source, prepare, and quality check our timber windows for an attractive and long-wearing final build.
For more general queries answered by our specialists, visit our FAQs page.
Are timber windows and doors energy efficient?
Compared to alternative types of window material, timber windows are more effective at maintaining steady temperatures within homes and buildings. Our bespoke Timber windows and frames are designed to facilitate solar heating, which harnesses heat from the sun to naturally warm up the inside space.
This is particularly beneficial for those looking to reduce reliance on artificial heating systems, as timber’s insulating properties will retain the heat during colder periods.
How long will timber windows and doors last?
With the correct care and maintenance, our durable timber windows can last up to 60 years or more, if not more. As mentioned above, our advanced coating system will help protect the wood from UV damage and moisture, which are the main causes of deterioration.
Unlike their uPVC alternative, our made-to-measure timber windows are designed to be repaired rather than replaced, making them better for the environment.
Why choose George Barnsdale as your timber window and door supplier?
With over 140 years of industry experience, George Barnsdale is renowned for its high-quality craftsmanship. Choosing us as your reliable supplier will have many benefits for you and the environment. For example, our timber windows are made using sustainably sourced wood, providing an eco-friendly option for your next building project.
For more information on our bespoke timber windows, contact us today. Our dedicated team will be in touch as soon as possible.
Where are your timber windows and doors sourced from?
We’re proud to source the timber for our timber doors sustainably, in line with the FSC® scheme, the globally recognised symbol of the world’s most respected forest certification scheme. As a timber door supplier, we ensure that our timber doors are produced using sustainable forest materials. We’re proud to source the timber for our timber doors sustainably, in line with the FSC® scheme, the globally recognised symbol of the world’s most respected forest certification scheme. As a timber door supplier, we ensure that our timber doors are produced using sustainable forest materials.
How long will our timber windows and doors last?
When properly maintained, timber doors can last for 60 years. Of course, many factors determine longevity, such as the type of wood used and the quality of construction.
Our stable, timber single, timber entrance and contemporary doors are all made with sustainable, quality materials built to stand the test of time, making us one of the most reliable timber door suppliers on the market. When properly maintained, timber doors can last for 60 years. Of course, many factors determine longevity, such as the type of wood used and the quality of construction.
Our stable, timber single, timber entrance and contemporary doors are all made with sustainable, quality materials built to stand the test of time, making us one of the most reliable timber door suppliers on the market.
What are the benefits of timber windows and doors?
There are several reasons why people prefer timber windows and doors over other materials like UPVC. Here are just a few:
Appearance. Timber windows and doors have a timeless appeal and come in a range of designs to suit both modern, and classic buildings.
Durability. High-quality timber is highly resistant to weather and wear and tear, particularly when it’s properly cared for. Whereas UPVC can become scuffed and cracked over time, timber is hard to damage and can always be refreshed by applying a stain, or a fresh coat of paint.
Sustainability. Responsibly sourced timber has a lower carbon footprint than many man-made materials and can even be repurposed or recycled with ease at the end of its life.
Value. Timber windows and doors are an attractive feature that many renters and homebuyers like to see. Upgrading your home with timber windows or a new timber entrance door can increase the value of your property, as well as improve its appearance.
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Benefit from a complete solution from a trusted, UK-made timber window and door manufacturer.
