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Hi Jim. I've seen hot dipped assemblies painted on jobs I worked on. The
most recent was two sets of stairs at a local college. Big, about 30 feet long
and shipped out completely welded and hot dipped.
After installation they were sanded a little to smooth out the galvy
coating and spray painted. I assume it was an enamel. It smelled like a solvent
based paint, maybe like "Rustoleum" or something.
Is there a paint that CAN be applied over a zinc coating that won't
de-bond ?
The only time I've done it myself was painting lettering on the Zincalate
paint mentioned before and like I said, after a year or so the lettering faded
out. This is on the roof and it gets hot, cold, and weathered. Not submerged.
Frank D.
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