Poor Galvanized Metal Adhesion
Paint that has lost its adhesion to a galvanized metal substrate.
Possible Cause:
-
Improper surface preparation, such as inadequate rust
removal.
-
Failure to apply a primer before application of an oil-based
or vinyl latex paint.
-
Failure to sand baked-on enamel finishes or glossy surfaces
before painting.
Solution:
Any rust on the metal should be removed with a wire brush.
Then, apply an acrylic latex corrosion-resistant primer. New
or previously painted galvanized metal that is completely
rust-free can be painted with quality acrylic latex house
paint without applying a primer; however, a metal primer should
always be applied to unpainted galvanized metal before applying
an oil-based or vinyl latex top coat.
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