A single-component, aluminum-filled, moisture-cured urethane, U-104 excels at protecting steel and other substrates from corrosion, even over pre-rusted surfaces. Because it bonds and encapsulates the substrate, it may not require aggregate blasting for surface preparation. It cures fast, easily allowing two coats in one day. With two or three coats, it can be used as its own topcoat, or for color, gloss and longest-lasting effectiveness, apply one of CFI’s topcoats.