ALU-CLAD Green Building Store


PERFORMANCE ULTRA triple glazed timber alu clad window with narrow installed sightlines with the timber frame designed to be wrapped within external wall insulation

Triple glazed timber alu-clad inward opening tilt & turn window with U values ranging from 0.85 W/m2K to 0.68 W/m2K. Suitable for newbuilds and deep retrofits.

  • Inward opening
  • High performance triple glazing
  • FSC® certified timber in redwood & oak
  • Aluminium cladding (on exterior)
  • Visible external sightline: 71mm (opening window)
  • Partially exposed timber frame, for wrapping within the building fabric
  • Dual compression seals for long-term airtightness
  • Secured by Design option
  • Frame depth: 78mm or 98mm options
  • Made exclusively for Green Building Store by our partners in northern Europe

Glazing & U values: 78mm frame depth

Whole window U Value: Uw 0.85 W/m2K (Redwood)
Whole window U Value: Uw 0.94 W/m2K (Oak)
Glazing U value:: Ug 0.58 W/m2K
Triple unit: Argon fill 44mm
Light transmission value: 74.1%

Glazing & U values: 98mm frame depth

Solid frame:
Whole window Uw 0.75 W/m2K Redwood
Whole window Uw 0.83 W/m2K Oak
Insulated frame:
Whole window Uw 0.68 W/m2K Redwood
Whole window Uw 0.72 W/m2K Oak

Glazing U value: Ug 0.52 W/m2K
Triple unit Argon fill 52 mm
Light transmission value: 74.1%

Typical maximum sizes

Tilt & turn: 1300 mm X 2300 mm
Tilt only: 2000 mm X 950 mm or 1300 mm X 2300 mm

Please note: For Part Q and Secured By Design items,  there may be size restrictions. Please get in touch to discuss. 

Test results

Air Permeability BS EN 12207: 600 Pa Class 4

Water tightness BS EN 12208: 600 Pa Class 9A

Wind load BS  EN 12210: 2400 Pa Class E2400

Exposure category BS 6375-1: 2400

* U values calculated for standard single window 1230 X 1480

Please see some sample styles below. If you can’t see the style you’re looking for, please get in touch, as everything we do is bespoke and made to your requirements.

Affiliations & Accreditations