Quote:
Originally Posted by lupo
. If you scratch an epoxy the rust will travel. If you use a metallic based urethane primer the rust won't travel beyond the scratch. A 2 component polyester type urethane has more chemical and acid resistance.
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Epoxy primer is the only product that prevents rust creep. Sorry, but you are badly mistaken.
There's no such thing as a metallic based urethane primer. Any urethane (high build) primer has zero rust prevention properties.
Urethane is a very good topcoat and does have great a abrasion resistance.