FGR Rooflights are Velux approved installers but also install other brands on request. We service and repair your existing instalation, including pairing remote hand controllers to electrically operated windows. Fancy electrically operated Velux roof windows, we post fit solar powered kits that dont even need a power supply. Dark areas your problem, we fit Velux sun tunnels, to bring daylight into the dark. CERTAS approved for replacement windows