There are two ways to go about flat roof lighting. The first option is to use electric lights inside the building. The second is to use flat roof windows, which utilises natural light to illuminate the rooms inside.
There are advantages to using either option. Electric lights are manually operated, bringing light into a room whenever it is needed. You also have the option of adding brighter or dimmer lights, which will suit different purposes for whatever the room is used for.
Roof windows are used as they use natural light, which is the most effective and energy efficient way to bring light into a room. With roof windows you also have the added ability to ventilate the room inside.
There are also different roof lighting designs available. Fixed, access windows, flat roof windows and smoke windows are all options to chose from and can each be used to suit the room inside.