This material is not the same as zinc rich primer. The latter is also suitable, but because it serves the same function as the galvanize, its additional use is uneconomical. Primers pigmented with calcium plumbate are used extensively in the United Kingdom on zinc but have not been very popular in North America. Topcoats to be applied over calcium plumbate must be carefully selected for compatibility or peeling from the primer may occur. Because sprayed zinc is slightly porous, it tends to corrode faster than other forms.
Protective coatings are, therefore, mandatory.
Wash primers, as on galvanize or zinc-rich, are suitable for priming sprayed zinc. Aluminum is usually in the form of base metal, although occasionally it is, like zinc, applied to steel. Aluminum-coated steel is called aluminized steel. Metal alloy constituents can affect the durability of aluminum, but generally it does not need painting for corrosion prevention except in marine atmospheres. Even here, some alloys are very durable.