Beauty in simplicity — a slender 35mm stick curtain wall system combining minimalist sightlines with Passive House certified thermal performance, fabricated and installed in-house.
📄 Download SlimWall 35 brochure (PDF)
Achieving Uf values as low as 0.71 W/m²K, SlimWall 35 is the UK's only 35mm curtain wall system to achieve both CWCT (Sequence B) and full ASTM standards.
Slender mullion and transom profiles maximise natural daylight and create wide, uninterrupted views — best suited to projects up to two storeys high.
Sound reduction up to Rw(C;Ctr) 47(-1;-4) dB, wind load resistance up to 2000Pa (3600Pa CWCT safety rating), and glass loads up to 450kg per panel.
Concealed drainage for clean lines, clip-on cover caps, free-form configurations for unique 3D faceted surfaces, and integrated solar shading.
Every specification refined to deliver optimal performance, versatility and production efficiency.
Independently tested and certified to exceed UK Building Regulations and industry standards.
| Performance metric | Rating / value | Standard |
|---|---|---|
| Thermal insulation (Uf) | 0.71 W/m²K | Frame U-value |
| Air tightness | AE1200 (1200Pa) | BS EN 12152 |
| Water tightness | RE1200 (1200Pa) | BS EN 12154 |
| Wind load resistance | 2000 Pa | BS EN 13116 |
| CWCT air leakage | A4 (600Pa) | CWCT Sequence B |
| CWCT water penetration | R7 (600Pa) | CWCT Sequence B |
| CWCT wind resistance (serviceability) | 2400 Pa | CWCT Sequence B |
| CWCT wind resistance (safety) | 3600 Pa | CWCT Sequence B |
| Acoustic performance | Rw(C;Ctr) 47(-1;-4) dB | BS EN ISO 717-1 |
| Burglar resistance | RC2 | Enhanced security |
| Max glass weight | 450kg | Per panel |
| Min visible sightline | 35mm | Interior & exterior view |
Versatile curtain wall façade and roof system with high weights and large spans for ambitious projects.
Speak to our team for a free, no-obligation quote — Romsey, Southampton, Winchester & across Hampshire.
Call 01794 721 100