Galvanized roofs owe their durability to the oxidation process. Galvanization is the process of applying a protective zinc coating to iron or steel to prevent rusting. When exposed to the environment, the outer zinc layer undergoes oxidation, forming a protective barrier - zinc oxide. This barrier shields the underlying metal from moisture and other corrosive elements, prolonging the lifespan of the roofing material. The function of galvanization, therefore, embodies a proactive employment of the oxidation process to forestall detrimental corrosion.