Poor Adhesion to Galvanising - Cameleon Paints | Industrial Coatings | Protective Coatings | Toll Manufacturing | Textured Coatings

POOR ADHESION TO GALVANISING

"Paint that has lost its adhesion to a galvanized metal substrate."

POSSIBLE CAUSES:

1. Improper surface preparation, such as inadequate rust / oxide removal.

2. Failure to apply a primer before application of an oil-based or vinyl latex paint.

3. Failure to sand baked-on enamel finishes or glossy surfaces before painting.

SOLUTION:

Any rust / oxide deposits on the metal should be removed with a wire brush; then, an acrylic latex corrosion-inhibitive primer should be applied (one coat is usually sufficient). Previously painted galvanized metal that is completely rust-free can be painted without applying a primer. A latex metal primer should be applied to unpainted galvanized metal, followed by a top quality exterior acrylic latex paint.