PERFORMANCE triple glazed timber casement window Green Building Store

PERFORMANCE

PERFORMANCE outward opening casement window

Triple glazed timber outward opening casement window (78mm profile). Cost-effective option. Uw 0.85 W/m2K.

OUT78

  • Outward opening (inward opening also available)
  • High performance triple glazing
  • FSC® redwood or oak timber
  • Secured by Design option
  • 78mm profile
  • BRE Green Guide A+
  • Made exclusively for Green Building Store by our partners in northern Europe

Installation Gallery

Window Gallery

Glazing & U values

Whole window U value: Uw 0.85 W/m2K (Redwood)
Whole window U value: Uw 0.93 W/m2K (Oak)
Glazing Ug: 0.58 W/m2K
Triple unit: Argon fill 44 mm
Light transmission value: 74.1%

Typical maximum sizes

Fixed light: 2500 mm X 2500 mm
Side hung: 950 mm X 1520 mm
Top hung: 1300 mm X 1650 mm

Test results

Air Permeability BS EN 12207: 600 Pa Class 4

Water tightness BS EN 12208: 750 Pa Class E750 (Top hung)

Water tightness BS EN 12208: 900 Pa Class E900 (Side hung)

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.

Glazing Options

Redwood Colour Options

View RAL colour options here

Oak Timber Stains

Handles

Brochure: PERFORMANCE & ULTRA WINDOWS & DOORS
WWA Installation Guidelines for Timber Windows
PERFORMANCE casement OUT78 window sections PDF
PERFORMANCE casement OUT78 window sections DWG
PHPP spreadsheet





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