Open to Sky roofing structures and sheet covers the top open area of a building. Roofing material is the outermost layer on the roof of a building, generally supported by an underlying support structure.

A building's roofing material provides shelter from the natural elements. The types of roofing materials which are available range such as fiber sheets and polycarbonate sheets.

This is mainly to allow natural sunlight and air to penetrate the open area, at same time preventing the rain water to flood the ground floor of the building.