Causes: - Usually no or improper priming - Improper surface prep or choice of paint - Not removing rust, oil and other substances from surface - Not deglossing baked enamel finishes - Painting too soon after cleaning the galavanized surface - Galvanized metal is very alkaline until weathered Solutions: - Remove all rust, loose paint and other particles - All dust must be rinsed or wiped away - Allow galvanized metal to weather prior to coating - Apply an acrylic corrosion-resistant primer - New galvanized metal must be primed with an acrylic corrosion-resistant primer if the finish coat is oil base or vinyl latex - Bare or new galvanized metal needs agressive cleaning with mineral spirits prior to using a galvanized primer |
