PERFORMANCE triple glazed timber tilt & turn window Green Building Store


PERFORMANCE inward opening triple glazed window

Our best-selling cost-effective triple glazed timber inward opening tilt and turn window.   Uw value 0.85 W/m2K.


Glazing & U values

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%

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.

Please fill in the quick form below to download a copy of the product specification clause:

Affiliations & Accreditations