By definition, the process of cladding is the application of one material over another to provide a skin or layer. In construction, cladding is used to provide an extra layer of protection against the weather to the exterior of a building.
Cladding can contain any of a wide range of materials including metals, wood, brick, cement, or plastic.
The cladding material is most commonly installed around windows, doors, roofs, and chimneys — areas where wind and rain may infiltrate the building. Cladding may also offer thermal insulation and can provide a level of noise control.