Fencing is the application of one material over another to provide a skin or layer. In construction, Fencing is used to provide a degree of thermal insulation and weather resistance, and to improve the appearance of buildings.
Fencing is the bonding together of dissimilar metals. ... Fencing is often achieved by extruding two metals through a die as well as pressing or rolling sheets together under high pressure. The United States Mint uses Fencing to manufacture coins from different metals. This allows a cheaper metal to be used as a filler.