Alumil offers some of the most advanced aluminium windows and doors in the world, trusted by architects and engineers alike. Fenestration Network provides UK homeowners with access to this elite system through expert installation and dedicated service.

Alumil Doors and Windows – Precision-Engineered Aluminium for Exceptional Homes

You may not have heard of Alumil Aluminium Systems before. However, this brand is already firmly established in the UK, used by the UK’s largest manufacturer of windows and doors for dwellings and used nationwide for housebuilders, new build apartment buildings and commercial installations. The Google Headquarters in New York has over 3500 Alumil windows installed. Alumil doors and windows are specified by leading architects around the world and have been used in some of the most recognisable buildings and homes.

In the UK, Alumil offers what are arguably some of the finest aluminium sliding and bifolding doors, alongside a new window system developed specifically for the British market — distinctive in its design and engineered to exacting standards.

Globally, Alumil doors and windows are trusted in environments ranging from the extreme heat of the Middle East to corporate landmarks such as the Google Headquarters, as well as numerous UK residential developments by prestigious housebuilders such as Berkley Homes and all their subsidiaries. Alumil is even specified by Foster + Partners and other top architectural firms.

Many Alumil products are hurricane-tested, sound-tested to extreme decibel tolerance, and built to perform under demanding conditions. This level of engineering ensures you benefit from windows and doors designed to keep you safe, secure, comfortable, and confident in their long-term reliability.

Where Alumil Doors and Windows Work Best

Alumil products can be used in almost any residential setting — from replacing dated patio doors to creating large structural openings in contemporary homes.

The bifolding doors are the slimmest in the UK with an 88mm sightline. Yet these are capable of going wider and larger than virtually any other bifold door model. Therefore ideal for maximising glass area while maintaining strength and thermal efficiency.

The sliding door range is equally versatile, offering models for standard patio doors through to high-performance systems used at the top of skyscrapers, capable of withstanding severe wind and rain.

Whatever your project, you’re investing in some of the most advanced and robust aluminium systems available today.

What’s in the Alumil Range

Alumil’s UK product offering includes:

• Casement Windows
• Tilt and Turn Windows
• Bifold Doors
• Sliding Door Systems
• Front Doors

This concise but highly specialised range focuses on the areas where Alumil excels — premium engineering, architectural aesthetics, and systems built to outperform.

Features You’ll Appreciate Every Day

The standout feature in the UK range is the MF65 bifold door, currently the slimmest bifold available, with a remarkable 88mm sightline. Each panel can reach up to 1500mm wide and over 3000mm high, making it the only UK system capable of such large sizes with such refined proportions.

These same design principles extend across the range, so your single or double doors benefit from the same ultra-slim lines, maximising light and creating a seamless connection between indoors and out.

Alumil doors and windows are designed not only for aesthetics but also for performance, combining cutting-edge materials, advanced seals, and precision components for long-term durability and ease of use.

Why We Recommend Alumil Doors and Windows

At Fenestration Network, we offer you Alumil because it represents the pinnacle of innovation, design, and engineering. Even if you never require a hurricane-tested door, you still benefit from the same extreme-performance technology and build quality that make Alumil trusted across the globe.

The result is peace of mind — knowing your home is fitted with windows and doors engineered for resilience, performance, and architectural beauty. And with all this precision and reputation comes remarkable value, making Alumil one of the most compelling choices in the premium aluminium category.

Why Buy Alumil Through Fenestration Network

We are one of the few companies in the UK with direct experience installing Alumil sliding and folding doors, and we partner exclusively with the longest-established Alumil fabricator in the country.

Alumil’s products require specialist knowledge to install correctly and achieve their designed performance. Through Fenestration Network, you’ll benefit from experienced professionals who understand the product, its setup, and its fine tolerances — ensuring your investment performs exactly as intended for years to come.

Our White Glove Service Promise

The Fenestration Network White Glove Service ensures that every Alumil system is handled with precision and care from start to finish.

We’re a small, independently run business offering nationwide coverage with the personal attention of a local expert. From your first enquiry to the completed installation, you’ll receive clear communication, honest advice, and complete transparency about your product, manufacturing partner, and installation process.

Our close collaboration with approved Alumil partners guarantees exceptional workmanship, supported by our ongoing aftercare and commitment to customer satisfaction.

With Fenestration Network, you’ll experience an effortless, premium service — where world-class engineering meets genuine personal care.

There is no question that Cortizo is now one of the most recognised names in the UK for slimline aluminium sliding doors and modern glazing solutions.

With a long-established international reputation across Europe and globally, Cortizo products combine advanced design with engineering excellence.