Cladding is often described as the application of the material that will cover the structure of a building or element. On the outside of a building it may have to consider weathering and climate control. In an interior, cladding is more important in terms of performance, look and identity. The relationship between cladding and structure and its visual appearance is a complex issue that dominates architectural and design history. See Loos "Ornament and Crime " 1908, materjalikiht, mis katab hoone konstruktsiooni või mingit hoone osa