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.)
† U-value (W/m²K) and SHGC calculated according to EN 14351-1:2006 + A1:2010 (window size 1140mm x 1400mm).
^ Bushfire testing applicable to GPL in roof pitch 18°-55°. 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.
‡ Except Cyclonic.