Reynaers Aluminium has introduced a new 35mm façade system that has achieved a UK-first in securing both CWCT (to Sequence B) and full ASTM testing for performance, safety and durability.

Reynaers SlimWall 35 (SW 35) is a high-performance 35mm stick façade system best suited for low-rise commercial projects and contemporary homes.

Developed for ease of fabrication and installation, the curtain wall system is the latest addition to Reynaers’ premium range of façade systems, including ConceptWall 50, ConceptWall 60, amongst others.

Combining slender sightlines with high technical performance, SW 35 has been tested in accordance with the Centre for Window & Cladding Technology (CWCT) to the robust Sequence B standards for air, water, wind and impact performance. This is measured through repeat, cycle loading real-world simulation.

To ensure the entire façade system offers high impact resistance, SW 35 has also secured I5 and E5 impact classification to European standard EN14019 for both soft and hard body impact.

Designed to simplify fabrication and installation, SW 35 requires just one inner glazing gasket and one insulator to achieve any glazing thickness. The system features sliding glass supports that can be pre-installed to simplify onsite installation and comes with dedicated tooling to ensure accurate glass positioning and air and water tightness.

This design-led and sustainable system, which won two Archiproducts awards in 2024 in the Building Shell and Sustainability categories, is Passive House certified (phA+), achieving U-values as low as 0.8W/m²K, to support long-term energy efficiency, comfort and sustainability.

Cradle-to-Cradle certified, SW 35 supports product circularity, requiring less aluminium due to its slimline design, which also helps to reduce embodied carbon to support projects with enhanced sustainability requirements.

John McComb, Technical Director at Reynaers Aluminium UK, said: “It is important to Reynaers that we continue to offer the very best value and performance to our UK customers. SW 35 is an excellent addition to our existing portfolio of versatile curtain wall systems, thanks to its combination of simplified fabrication and installation, minimalistic design, and high performance and sustainability credentials.

“Designed for both residential and low-rise commercial applications, the ultra-slim profiles create expansive views while helping maintain a comfortable indoor environment—delivering both style and performance. Although ideal for low-rise developments of up to two storeys, enhanced load-bearing capacity can be achieved when integrated into landscape designs. Speak to our technical team for advice tailored to your project.”

The SW 35 stick façade system can be specified with elevated elements with high-insulation panels to provide enhanced RC2 security. Its EPDM perimeter membrane is also tested to a rating of ‘Reaction to fire classification B-s2, d0’.

John added: “Reynaers SW 35 offers the contemporary aesthetic and performance standards that are in high demand as residential design seeks to optimise light and deliver a contemporary aesthetic, as well as deliver the wellbeing benefits access to natural light can bring.”

Find out more about SlimWall 35 online.