Rustproofing & Undercoating in Appleton, WI | Bradle’s Auto

While both services help protect your vehicle from corrosion, they protect different areas. Rustproofing targets the inside of your vehicle by treating doors, rocker panels, seams, body cavities, and other enclosed areas where moisture and road salt can collect. Undercoating protects the exposed underside of your vehicle, including the frame, suspension, wheel wells, and other underbody components from rust, salt, and road debris. Together, they provide complete corrosion protection.

Fluid Film® is a lanolin-based corrosion inhibitor that penetrates existing surface rust, displaces moisture, and provides long-lasting protection without drying out, cracking, or peeling. Unlike many rubberized coatings, it continues to creep into seams and hard-to-reach areas, helping protect areas where rust commonly begins.

Yes. New vehicles leave the factory with varying levels of corrosion protection, but none are immune to Wisconsin's road salt and winter conditions. Applying rustproofing and undercoating early helps protect your investment before corrosion has a chance to begin

Unlike quick spray applications, we believe preparation is essential. We thoroughly clean and blow out the undercarriage before removing wheel liners, splash shields, skid plates, and the spare tire (when applicable) to access hidden corrosion-prone areas. Every removed component is professionally reinstalled and torqued to manufacturer specifications for a thorough, high-quality installation.

Most rustproofing and undercoating services are completed within one business day, depending on the vehicle's size, condition, and any additional protection services being performed.

Yes. Fluid Film® is safe for most painted surfaces, factory coatings, metal components, rubber, and plastic materials commonly found on today's vehicles. It is specifically designed to help prevent corrosion while remaining flexible and effective in harsh environments.

 Pricing varies based on vehicle size and the level of protection selected. Professional Fluid Film® rustproofing and undercoating services start at $500. 

 Proper preparation helps ensure maximum coverage and long-term protection. At Bradle's Auto Spa, we thoroughly clean the undercarriage, remove loose dirt and debris, and remove components such as wheel liners, splash shields, skid plates, and the spare tire (when applicable) to access areas that many quick spray applications miss. This allows us to provide more complete protection and helps Fluid Film® reach the areas where corrosion commonly starts.