Clean-lined flush casement windows with a timber core, aluminium exterior, and outstanding thermal performance – available in double or triple…
Timber Performance, Aluminium Precision
Our Aluclad windows unite the warmth of engineered timber internally with the durability of an aluminium exterior. Available across four distinct ranges – each engineered to deliver excellent insulation, design flexibility, and long-term reliability across a wide range of project types and architectural styles.
The Best of Both Materials
Aluclad timber windows offer something that neither pure timber nor aluminium windows achieve alone. The timber core provides structural integrity, natural aesthetic appeal, and excellent thermal insulation, while the aluminium exterior protects against the elements and requires virtually no maintenance. This combination is increasingly the specification of choice for architects working on design-led, energy-conscious buildings.
Our manufacturing processes are precise and consistent, with each window engineered to exacting tolerances. Mortise and tenon jointing, factory-applied microporous finishes, and warm edge spacer bars are among the details that distinguish our Aluclad windows from lower-specification alternatives. The result is a product that performs reliably from final installation onwards, with a smooth operation that lasts.
Triple Glazing and Thermal Efficiency as Standard
Triple glazing is a key factor in the performance of our Aluclad range. Our triple-glazed systems achieve U-values as low as 0.79 W/m²K, making them an excellent choice for Passivhaus projects, low-energy new builds, and any project where thermal performance is a primary consideration. Thermal breaks within the aluminium cladding prevent cold bridging at the frame, supporting consistent interior comfort and reducing energy demand.
Available in the full RAL classic colour range with a choice of engineered redwood, hardwood, Accoya, or European oak timber cores, our Aluclad windows offer complete design flexibility. Whether the project calls for a modern look with slim profiles or a more traditional aesthetic, our range provides a considered solution backed by superior craftsmanship and peace of mind at every stage.
Frequently Asked Questions
Common questions about our Aluclad timber windows, answered by our technical team for architects, specifiers, and self-build clients.
Contact UsOur double-glazed Aluclad windows achieve Uw values of 1.2 W/m²K, while triple-glazed versions reach as low as 0.8 W/m²K – and 0.79 W/m²K in our certified Passivhaus range.
Triple glazing typically reduces window heat loss by 30–40% compared to high-performance double glazing, with significantly improved acoustic attenuation and reduced cold-edge condensation at the frame perimeter.
For new builds, Passivhaus projects, or any property targeting low energy consumption, triple-glazed Aluclad windows offer a measurable long-term return in reduced heating costs and improved comfort.
Our standard specification uses engineered redwood. Engineered hardwood, Accoya, and European oak are also available, offering a range of durability, stability, and aesthetic finish options to suit your project.
The aluminium exterior requires only occasional cleaning and is resistant to weathering and corrosion. The internal timber finish uses a factory-applied, microporous paint or stain system that provides long-lasting protection with minimal upkeep.
Our Projects
Stirling, Scotland
Find out more about Stirling, ScotlandHamill House, Scotland
Find out more about Hamill House, ScotlandEdinburgh, Scotland
Find out more about Edinburgh, ScotlandDollar, Scotland
Whether incorporated into a modern contemporary new build or unlocking a period property, our curtain wall can reinvigorate a property by letting the natural daylight come flooding in.
Find out more about Dollar, Scotland
Zyle supplied Passive House windows for our new build, and the system met all project expectations. Airtightness and overall performance were delivered as specified, and their technical coordination on site was reliable and detail focused.
Private Owner
Mark Reynolds, Bristol
Our vacuum glazed sash windows provide an excellent balance between heritage sensitivity and modern performance. The slim glazing preserves the character of the property while significantly improving overall comfort. Installation was precise and professionally managed.
Private owner
Laura Mitchell, Southampton
The Passive House windows performed exactly as required within our project specification. Installation detailing, sealing, and overall execution were handled correctly, ensuring a high standard of delivery. A technically competent and reliable supplier.
Private Owner
Andrew Collins, Cambridge
We selected aluminum windows for their contemporary aesthetic and low maintenance. The proportions are well considered, and the finish quality is consistent throughout. Installation was efficient and carried out with strong attention to detail.
Private Owner
Rachel Adams, Reading
The triple glazed sash windows integrate seamlessly into the existing façade while offering a clear upgrade in comfort. Craftsmanship is evident in both joinery and installation, and the improvement in acoustic insulation is immediately noticeable.
Private Owner
Thomas Green, Nottingham
The Alu-Clad windows and doors introduced a strong architectural presence while maintaining a refined internal finish. Detailing, material quality, and consistency across the project are of a high standard. The process was structured and dependable from start to finish.
Private Owner
Olivia Bennett, Oxford
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Talk to Our Team
Whether you are an architect specifying for a new project, a self-builder planning your custom home, or a developer working to a programme, our team is here to help. Get in touch for technical advice, product information, or to request a quote.
- 124 City Road
- London
- United Kingdom
- EC1V 2NX
