Reynaers Aluminium UK has launched a new high insulation plus variant of its popular SlimLine 38 window system, combining Passive House levels of insulation with minimal sightlines and a reduced carbon footprint.

Designed to support demand for sustainability-led construction, the Reynaers SlimLine 38 HI+ (SL 38 HI+) inward-opening window system can be fabricated to replicate the 'steel look' typically found in heritage buildings. It is also suited to retrofit projects, as well as domestic and commercial applications where a clean, modern finish is required.

Supporting Sustainable Building Design

Suitable for reduced-energy building projects, SL 38 HI+ is produced using Cradle to Cradle® certified profiles that are 100% recyclable, supporting product circularity while providing architects and specifiers with a design-led, high-performance solution.

SL 38 HI+ reaches Passive House levels of insulation, significantly limiting heat loss to achieve a high level of thermal efficiency. Designed to meet and exceed the latest building standards, the system is suitable for new-build projects as well as upgrades and refurbishments.

An established and regularly specified product within the Reynaers portfolio, the addition of the high insulation upgrade to the SL 38 window reflects the company's continued focus on development, testing and innovation. Multiple variants and glazing options provide design freedom alongside high performance.

Security and Slim Sightlines

Available in a burglar-resistant variant, SL 38 HI+ is PAS 24 - RC2 certified to maximise safety and provide additional peace of mind.

Ian Osborne, Product Manager at Reynaers Aluminium UK, said: "The launch of Reynaers SL 38 HI+ window for the UK market supports specifiers and architects looking for a high-performance system that delivers long-term sustainability and comfort, alongside slim sightlines for a clean, modern aesthetic.

"SlimLine 38 HI+ has slender opening vents up to 3m in height, maximising internal light and achieving expansive views of surrounding landscapes.

"The updated window is only 8mm deeper than the standard system, yet offers the same slender aesthetics, style variants and futureproof design that continues to make this system an essential part of our product portfolio."