KBS Coatings Posted January 23, 2009 Report Share Posted January 23, 2009 Usually RustSeal provides the best rust protection when applied onto bare steel. However, it can be applied over primers, but without seeing this primer, it would be hard to say to just apply over the primer or scuff that primer first before applying RustSeal. You can test an area first. Quote Link to comment Share on other sites More sharing options...
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