existing paint

[FrankV]

Can rustseal be applied over existing painted items (assuming they have been cleaned and prepped like the rusted areas)? Or do I need to sand-blast the entire unit?

[KBS Coatings]

Yes you can apply RustSeal over a scuffed and cleaned painted surface, however you’ll get the ultimate in rust protection when RustSeal is applied over the bare or rusted steel. Otherwise, make sure all the loose flaking paint is off, lightly sand the existing paint and clean with KBS Klean before you apply RustSeal to a painted surface. Check out the complete directions for RustSeal here: http://www.kbs-coatings.com/rustseal-directions.html