Coating a car frame or underbody with RustSeal is one of the most effective ways to stop existing rust and prevent new corrosion from forming. For a standard car frame with two coats, one quart of RustSeal is typically sufficient — for the full underbody carriage and frame, plan on two quarts. Before applying, proper surface preparation is essential: RustSeal bonds directly to clean, prepped metal, and skipping this step can lead to poor adhesion. KBS Coatings also offers the Frame Coater Kit and the Large Frame Coater Kit for a convenient all-in-one solution that includes everything needed to prep and coat your chassis from start to finish.
One quart of RustSeal covers a standard car frame with two coats. If you plan to coat the full underbody carriage and frame with two coats, plan on two quarts.
Shop RustSealYes — proper surface preparation is required. RustSeal bonds directly to clean, prepped metal. Skipping prep can result in poor adhesion and premature failure. Follow the full cleaning and surface prep steps in the RustSeal Application Directions before applying.
View Application Directions Shop RustSealYes — KBS Coatings offers two frame coating kits. Both include everything needed to properly clean, prep, and coat a vehicle frame or full underbody chassis.
Shop Frame Coater Kit Shop Large Frame Coater Kit