Trusted timber window specialists serving Greater London.
With years of expertise in designing and producing high-quality timber windows and doors, we are committed to delivering exceptional solutions that merge functionality with timeless elegance. Our team of skilled professionals takes pride in each project, ensuring every product meets our clients’ expectations for durability, insulation, and design.






Explore our timber windows and doors, crafted to your vision. From timeless sash windows to elegant French doors, our products meet your specifications. Lead time from 4 weeks after deposit.
We envision homes transformed by quality windows and doors that not only complement each space but also enhance its energy efficiency and comfort. Our goal is to be a leader in crafting sustainable, beautiful, and functional joinery solutions.
Our mission is to create and deliver products that exceed expectations in design and performance. Through personalized service, expert craftsmanship, and rigorous quality control, we strive to meet the unique needs of every client.
Windows Measurement
Not sure how to measure your windows? Our company offers a free measurement service with every order. Contact us for more details.
Windows Fitting
We provide comprehensive window and door fitting services, including removal of old fixtures and installation of new joinery. Contact us to learn about fitting costs – we’re here to ensure your satisfaction.
We start with a free consultation to fully understand your needs and help you choose the best solutions. Contact us to learn more about customizing our windows and doors to meet your requirements.
If you need assistance measuring your windows or doors, our specialists provide accurate measurements to ensure a perfect fit. Measurement is free with every order.
We offer a complete installation service, including the removal of old windows and doors and the professional fitting of new ones. Our installation teams take care of every detail to ensure durability, insulation, and a polished finish.
With years of experience, our skilled professionals design and produce high-quality timber windows and doors, meeting the highest standards for durability, insulation, and aesthetics.
We understand that every project is unique. Our team works closely with each client to create custom solutions that perfectly fit their style and functional needs.
From measurement to installation, we offer a seamless process with our in-house teams, ensuring timely and high-quality results without relying on subcontractors.
Our windows and doors combine traditional craftsmanship with modern innovations, bringing timeless elegance to any space.
Reputation is everything and our work is quality.
Choosing the right windows and doors is one of the most important investments you can make in your property. High-quality joinery improves architectural character, enhances insulation and strengthens long-term property value.
At International Windows Group, we specialise in manufacturing and installing bespoke timber windows and doors in London, combining traditional craftsmanship with modern engineering. Every product is made to measure and tailored to the style of your home.
Learn more about our approach on the About Us page or explore completed installations in our portfolio.
Solutions such as timber sash windows and timber casement windows remain among the most desirable upgrades for London properties.
Each system supports advanced glazing technology designed to improve thermal efficiency and acoustic comfort.
Every product is manufactured to precise dimensions, ensuring seamless integration with your building. Review specifications in our technical drawings or download resources from the documentation section.
Our compliance standards can be reviewed on the Certificates page.
Upgrading windows and doors is one of the most effective ways to reduce heat loss and improve comfort. Our timber systems support modern double and triple glazing options.
Planning a project? Try our timber windows calculator to estimate costs.
International Windows Group is recognised for precision manufacturing, transparent communication and dependable installation standards.
Ready to begin? Visit our contact page to speak with a specialist.
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