The rooflights have a high potential to provide the amount, type and distribution of natural light necessary for the specications of a building. At the same time, they make possible a reduction of the energy used for artificial lighting and heating.

Chief among its many benefits is that natural light is a source of heat that does not involve any cost.

The materials used for the skylights should not only let in light, but must also meet all the requirements of duration, thermal, security and fire behavior. The materials used are usually fiberglass, polycarbonate, glass and to a much lesser extent, PVC.