Window Solutions

Aluview’s Alitherm 400 system combines exceptional value with class-leading thermal performance, weather resistance and enhanced security—making it ideal for both residential and light-commercial projects. Engineered for fast fabrication and straightforward installation, the system features co-extruded gaskets in sashes, outer frames and quick-glaze beads.

Choose from a versatile range of sash profiles—standard, slim-line, flush or heritage style—and now also enjoy a tilt-turn option for flush, modern aesthetics. Both window and door configurations deliver typical U-values around 1.4 W/m²K (based on 1.0 W/m²K glass), and comply fully with Part L of the Building Regulations. All products carry PAS 24:2022 accreditation and British Kitemark certification, ensuring peace of mind on security.

Windows are available in fixed, side-hung, top-hung, tilt-turn and flush-casement formats, each optimised for airtightness, weather-tightness and energy efficiency (Band A Window Energy Rating). Doors—offered as single or double, open-in or open-out—feature multi-point locking (key-wind, lift-lever or slam-lock options) and achieve Band B Door Set Energy Ratings. Colour-matched accessories and Aluview’s full spectrum of standard and bespoke finishes let you tailor every opening to your project’s aesthetic.

Whether you’re specifying new-build schools, healthcare facilities or high-end residential schemes, Aluview Alitherm 400 delivers the flexibility, performance and security your designs demand.