Our best-selling cost-effective triple glazed timber inward opening tilt and turn window. Uw value 0.85 W/m2K.
IV78
- Inward opening (outward opening also available)
- High performance triple glazing
- FSC® certified timber in redwood & oak
- FSC® certified Accoya timber drip rail for durability
- Alu-clad option available
- Dual compression seals for long-term airtightness
- Secured by Design option
- 78mm profile
- Made exclusively for Green Building Store by our partners in northern Europe
Installation Gallery
Timber Window Gallery
Alu-clad Window Gallery
Window style options (many others available)
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 BSÂ EN 12210: 2400 Pa Class E2400
Exposure category BS 6375-1: 2400
* U values calculated for standard single window 1230 X 1480
Glazing Options
silvit
puntaedo
niagra
masterpoint
mastercarre
kura
kathedral
flutesmatt
flutes
deltamat
delta
crepi
chinchilla
atlantic
altdeutschK
abstracto
simple obscure
Solar control glazing
Safety glazing toughened or laminated
Acoustic glazing
Redwood Colour Options
Standard RAL colours: www.ralcolor.com
Pine
Oak
Afzelia
Afromosia
Oak Timber Stains
Standard RAL colours: www.ralcolor.com
Oak Walnut
Oak Teak
Oak Light Oak
Oak Clear
Handles
Most handles are compatible with our windows and doors so if you are looking for something a bit different to what is shown please get in touch with the windows team and we will be able to find something to suit your needs.