VELUX GGL is an openable, centre-pivoting roof window for in-reach applications used to bring natural light and air into attics or lofts where ventilation is required.


Product Features:

  • A short pull on the top control bar allows filtered passive ventilation even while the window remains shut. 
  • A second pull on the control bar allows the window to rotate for maximum ventilation – and up to 180º for cleaning the outer pane from inside the room.
  • White pre-painted pine sash and frame
  • Complete with outer aluminium cappings and flashings for tile or corrugated iron roofs.
  • Available in 5 sizes
  • Laminated double glazing as standard
  • Insect screen available as extra

From $690 incl GST

Roof window GGL

Technical Performance

U-value †

Solar Heat Gain
Co-effecient †

Heat Block

WERS max 5 stars
(summer rating)
Skylight 1.30
Glass only 1.00
Skylight 0.31
Glass only 0.30
BAL40 Aprox 70%  
AS4285, AS1288
AS3959^, AS1530.1††


<p<*>NB: For roofs below 15° pitch, roof windows need to be raised to 15° and custom flashed. VELUX can assist with technical advice and drawings. (NB: build-up not recommended in Bushfire areas.) </p<*>

† U-value (W/m²K) and SHGC calculated according to EN 14351-1:2006 + A2:2016 (window size 1140mm x 1400mm).

^ Bushfire testing applicable to GGL in roof pitch 18°-75°. Roof window only. Custom-made flashing required. Roof window tested in closed position, additional mesh protection may be required for opening apertures (consult local council).

†† Roof window in closed position.

Centre pivot roof window - size chart