Rust-Oleum® Stops Rust® Cold Galvanizing Compound Spray instantly galvanizes metal surfaces with a 93% pure zinc coating that offers long-lasting cathodic protection. Ideal for use on fences, gutters, welded joints, and other metal surfaces, it provides superior rust, chip, and scratch resistance for both indoor and outdoor applications. This fast-drying formula offers a matte, industrial-grade finish that can be top-coated for additional protection.