Additionally, applying a light bridge coat of the urethane before the flood coat will help stop solvent dive-in, which can cause lifting and wrinkling of the Zero Rust. Zero Rust can withstand intermittent temperatures of 250-300 degrees before the resin starts baking out. Heat resistance will vary by color. Dispose of wastes and residue in accordance with regulations applicable to the area of use. Just follow the instructions under Surface Preparation.
Any protection offered by the topcoat is then one step removed from the steel.
Zero Rust will truly protect, isolate, and insulate the steel. Zero Rust is a single component system. Scuff sand to recoat. Most catalyzed systems do not allow repairs without extensive surface preparation. On heavily rusted surfaces where sandblasting or total removal of old film is not practical, Prep-Step is the answer.