Roof

A roof is a structure that forms the upper part of a building or other shelter. Its primary function is usually to protect against the elements, but it may also contribute to the protection of privacy insulation, and so on. Roofs may have openings or windows inside them to allow light to the buildings, as well as to provide access to ventilation views, and so on. They also frequently include other features such as chimneys, communications infrastructure construction of drainage lighting access routes, and so on. The characteristics of a roof depend on the purpose of the building that it covers, the available roofing materials, local construction traditions and broader concepts of architectural design and practise, and may also be governed by legislation. A verandah can be covered with material that protects against sunlight, but admits the other elements. The roof protects the plants from the cold, the wind and the rain, but admits light.