What is definition of wall cladding?

Wall cladding is a type of decorative covering used on building exteriors. Though usually non-structural in nature, it may be functional in addition to decorative. This can include a degree of water-proofing, a barrier against the wind, or other protections. Cladding can take a number of different forms, be made from many different materials, and is often used to create a decorative building facade. Some of the popular materials for cladding include various metals, stone, and composite sidings.