A skylight is a light-permitting structure or windows usually made of transparent or translucent glass, that forms all or part of the roof space of a building for daylighting and ventilation purposes.

Skylights are widely used in designing daylighting for residential, public, and commercial buildings. Increased daylighting can result in less electrical lighting use and smaller sized window glazing (sidelighting), saving energy, lowering costs, and reducing environmental impacts. Daylighting can cut lighting energy use in some buildings by up to 80%.

Skylights help in making a major contribution to energy efficiency and comfort. It can admit more than three times as much light as a vertical window of the same size and distributes the same evenly resulting in savings in energy and improving the overall visual comfort levels of the occupants. Apart from that, sometimes, homeowners consider safety reasons and choose to have fewer window openings in the walls. In such conditions fixing Skylight in the roofs is the best solution as Skylights bring natural light and air into areas that normally wouldn’t have windows.