This is even more critical when the surface being coated is rusty. In many cases, the rust has to be sand blasted off in order to ensure a clean surface for the primer to adhere to, but with CorrVerter® Rust Converter Primer, the story takes an interesting turn. CorrVerter® is a fast drying, water-based onecoat system (primer) that converts rusted surfaces to a hydrophobic passive layer and prevents further rusting through the unique formulation of chelating agents and a high solids waterborne latex with extremely low water vapor permeability. This is an ideal solution for situations where blasting is not an option due to site restrictions or other limitations.