Radiant Paints Metal Etch Primer (RP-METX574) is your all-in-one etch primer and topcoat! We have developed this unique metal primer and top-coat specifically for the roofing industry to provide protection and priming to galvanized and steel roof surfaces. This water-based, lab tested rust converter for steel, galvanized and aluminium penetrates, stops rust and leaves a tough, colored superior finish. No separate topcoat needed and available in various popular colors! Read more about this amazing product on the product page.