Decking is the application of one material over another to provide a skin or layer. In construction, Decking is used to provide a degree of thermal insulation and weather resistance, and to improve the appearance of buildings.
Decking is the bonding together of dissimilar metals. ... Decking 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 Decking to manufacture coins from different metals. This allows a cheaper metal to be used as a filler.