Alumil’s latest window systems mark a real shift in what homeowners, architects and installers can expect from aluminium windows in the UK. Alumil windows bring something altogether new. These are windows engineered with extraordinary precision, designed from the ground up for British homes, and shaped by the architectural expertise of one an internationally recognised aluminium systems company.
Alumil S85 Casement Window
The UK’s slimmest casement window of its kind, Alumil S85 is a newly developed fixed and outward-opening aluminium casement window that brings a fresh, contemporary aesthetic to the UK market. With its ultra-slim, perfectly balanced sightlines and a true double-flush appearance inside and out, it delivers the clean, modern look normally associated with high-end architectural systems. No other UK casement system currently offers this particular design.
With substantial sealing and thermal insulation, refined and desirable proportions, the S85 is a genuinely attractive window inside and out. This new window immediately looks and feels different from typical system company offerings. Combined with Alumil’s advanced internal engineering and insulated profile structure, the S85 blends design purity with long-term performance. A modern window for homeowners, architects or housebuilders seeking something genuinely new and different.
Alumil S77 Tilt and Turn Window – multifunctional elegance
The Alumil S77 is a premium tilt-and-turn window system designed for projects that demand exceptional thermal efficiency, security and structural performance. Purpose-built around a 77mm insulated frame, S77 tilt and turn windows offer very low U-Values as low as 0.85 W/m²K with the correct glass specification and advanced window sealing, weather protection and security.
Designed for standard window sizes and oversized units up to door sizes or 180kg weight, Alumil S77 tilt and turn windows don’t just offer the convenience of ventilation with easy cleaning. The range covers the full suite of tilt-and-turn designs, including concealed sash options, low-threshold variants, fanlights, pivot windows and more, S77 is an architectural quality window with technical excellence and capability for any residential or commercial project.
Alumil SMARTIA M7 Curtain Walling
SMARTIA M7 is Alumil’s high-performance curtain walling system, designed for projects that require larger glazed areas, greater structural capacity and consistent sightlines that standard window systems cannot provide. With a 50mm external profile width and mullion/transom depths up to 250mm, M7 delivers the strength needed for exposed locations, multi-storey glazing, stairwells, double-height spaces and floor-to-ceiling elevations.
Because of its strength and flexibility, M7 is widely used in residential settings where floor-to-ceiling glazing is desired, such as double-height living spaces, large stairwell windows, gallery landings or heavily glazed extensions. It supports projected and parallel-projected opening modules up to 180kg, enabling ventilation without compromising the overall façade design.
Further information and where to buy Alumil Windows.
Alumil brings something genuinely new to the UK aluminium window market. Both the S85 and S77 systems deliver the kind of engineering normally associated with high-end architectural specifications — slimmer sightlines, cleaner detailing, stronger thermal performance and a noticeably more refined feel. These are windows designed to meet UK expectations but built on internationally proven technology, giving them a depth of quality that stands out immediately.
For Fabricators
Alumil offers manufacturers a way to diversify and move beyond the crowded, price-driven systems that dominate the market. The S85 and S77 platforms are engineered for efficient fabrication, compatible with common tooling, and backed by certified performance. More importantly, they give fabricators a design-led product range, including sophisticated sliding and folding doors, curtain walling and other products, allowing them to offer something distinctive to trade customers and architects.
For Installers
Most showrooms offer similar-looking aluminium windows. Alumil changes that.
The S85 provides the slimmest double-flush casement aesthetic currently available, while the S77 delivers continental-style tilt-and-turn capability with exceptional performance. Together, they give installers a premium alternative that immediately differentiates their offering, increases average project value and appeals to homeowners seeking something better than standard aluminium windows.
For Homeowners
Alumil windows are engineered for long-term comfort, security and energy efficiency, while also adding a clean, modern look that enhances any property. With advanced insulation, premium-grade aluminium, refined sightlines and components proven in challenging international climates, these windows offer decades of smooth, reliable performance. For homeowners prioritising quality, design and peace of mind, Alumil represents a noticeable upgrade over standard aluminium window systems.
For Architects
Architects benefit from Alumil’s S85 and S77 windows through a combination of refined sightlines, modern geometry and high-level technical performance. The S85 offers a true double-flush appearance with no visible gasket perimeter, creating the clean, uninterrupted lines sought in contemporary residential and light commercial design. Both systems deliver balanced proportions, strong thermal and acoustic performance and a coherent aesthetic across casements, fixed panes and door integrations. For architects seeking a more architectural aluminium window than the typical UK casement, Alumil provides a specification-friendly, design-led alternative alongside curtain walling that is capable of meeting virtually andy design requirement.
Contact us for more information and where to buy Alumil windows near you.
Images Courtesy of Skyglaze Ltd, expert manufacturers and installers of architectural aluminium windows and doors available nationwide.
