Rust is caused when iron comes into direct contact with water and oxygen. Technically, rust comes from a chemical reaction between carbon dioxide from the air, water, and iron. Rust is nothing more than simply corroded iron. When oxygen combines with water then iron is dissolved.
Florida’s climate makes corrosion and rust on weather exposed metal substrate commonplace. Typically, once rust is discovered within a metal substrate the entire substrate should be properly stripped down to “white metal” cleaned, primed & painted.
Spot priming of the rusted area is only a short-term temporary fix. Once Rust is in metal the rust will continue to spread. If one area is treated, it is likely that rust will breakout elsewhere. The following steps are essential when corrosion resistance is required. Corrosion resistance painting systems are a challenge in our climate. Maintenance is a necessary process in rust or corrosion resistance.