ShaliPrime® Zn R is a two component, cold cure, epoxy resin blend with zinc powder. Unlike regular paints / epoxies, which resists corrosion by forming and impermeable barrier between the metal and atmospheric moisture, ShaliPrime® Zn R provides corrosion protection through tiny electrical cathodic cells formed by interaction of zinc with steel surface. Of course, ShaliPrime® Zn R provides some impermeable barrier as well. ShaliPrime® Zn R is superior to paints / epoxies in providing corrosion protection.