VELUX Roof Window - GGU MK04 - 780 x 980

The VELUX GGU  roof window has a  white polyurethane, maintenance free interior and is an excellent solution to visually expanding interiors with daylight, fresh air and sky views. Ideal for in-reach attic situations.

• Laminated, argon fill, double glazing with Low-E coating
• Exterior of lacquered aluminium in "grey friars" colour
• Noise reduction of 34 dB
• R-value of 0.83*
   

*R-value (m2 K/W) data based on NFRC simulations at 90° installation pitch (nominal skylight size 1200mm x 1200mm)

Construction

VELUX GGU is an opening, centrepivoting roof window used for in-reach applications to bring natural light and air into attic or loft rooms where ventilation is required. Easy to clean, high quality polyurethane molded over a timber core and finished in white. Aluminium external cappings finished in a smooth grey colour, similar to ‘COLORSTEEL® Grey Friars’.

Operation

The GGU is operated manually. The control bar at the top of the window is clicked to allow passive ventilation, whilst the window remains locked and watertight. A second click of the control bar opens the sash. The sash is frictioned to stay in a horizontal pivot position to maximise ventilation. The sash can be locked in two positions, either slightly ajar or 180°, the fully rotated position, allows the outside pane to be cleaned safely from inside the room.

Construction

• Frame and sash: Moulded Polyurethane (white) encapsulating a timber core for a tough maintenance-free interior finish.
• Exterior capping: Grey aluminium
• Passive Vent - For controllable passive ventilation when you want it.
• Sash rotates 180 degrees for easy cleaning from the inside
• Outer – 4mm toughened Low-E2 coated glass.
• Cavity – 15mm sealed Argon gas space.
• Inner – 6.38mm clear laminated glass (0.38 PV B inter layer).
• Warm edge technology increases energy efficiency

Thermal values have been verified by BRANZ and can be used for all climate zones to show compliance with NZBC H1/AS1 using Alternative Solution VELUX Schedule Method (CodeMark), or the Calculation Method.

GGU Roof Windows have been energy rated in accordance with the Roof Window Energy Rating Scheme (WERS)

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