Heavy Duty Zinc Galv Spray provides active metal protection against corrosion and an excellent primer coat. The sacrificial properties of zinc contribute to an effective defence against oxidisation should the coating become damaged. Zinc Galv Spray can be used both on bare metal and previously galvanised surfaces, and is suitable for spraying onto acrylic or cellulose paints (not alkyd). It may be over-coated with acrylic, alkyd, PU and epoxy paints.