Rust Proofing
Starting at $350 plus tax
Vehicles in Hawaii are continuously exposed to salt air, coastal humidity, and marine environments. Our internal cavity rust protection treatment is applied within enclosed body panels, structural seams, and frame sections to help reduce corrosion where it cannot be seen.
Service Options
- Standard Rust Proofing — internal cavity treatment in body panels, doors, pillars, and structural seamsStarting at $350 plus tax
- Inner Frame Rail Upgrade — inside main side rails and crossmembers+$100 plus tax
Larger trucks and SUVs may be quoted higher based on vehicle size.
Internal cavity rust protection - applied to enclosed panels, seams, and frame sections
- • Protection against Hawaii's salt air and coastal humidity
- • Sprayed into enclosed inner body panels — doors, hood, trunk, pillars, and seams
- • Helps reduce corrosion in enclosed areas that are difficult to see or reach
- • Long-term structural integrity and resale value preservation
What’s the difference between clear inner rustproofing and rubberized undercoating?
CAA’s clear inner rustproofing is applied with cavity wands inside body cavities and designated internal areas. Inner frame-rail treatment is an optional upgrade. It helps reduce corrosion from salt air and moisture but does not make a vehicle rustproof. Black rubberized undercoating covers the underside or exterior frame; CAA does not offer that service. Ceramic coating helps protect exterior paint, while inner rustproofing addresses corrosion inside designated body areas.
Inner Frame Rail Upgrade
For trucks and body-on-frame SUVs, we offer an inner frame rail treatment as an add-on. The product is applied inside the main side rails and cross members — not sprayed on the outside like traditional undercoating. This is where structural rust does the most long-term damage on trucks in Hawaii's environment.