Galvanizing is the process of applying a protective zinc coating to steel. Galvanized steel sheet is one of the most used sheets for the roofs in homes, industries, and commercial premises. The roofs are made up of mild steel coated with zinc. Galvanized steel roofing sheet usually comes in different form of long run roofing such as trapezoidal, trough section / concealed fix, and corrugated. It also sometimes comes in the form of flat sheets. The galvanized steel sheets are normally fixed in place using lead-headed nails in order to prevent it from rusting.