How to Deal with Door Rust?

[VonEsther]

If rust is found on the car door, it should be treated promptly to prevent the rust from spreading. The treatment methods are as follows: 1. Surface rust with a small area: If the rust is on the surface and the area is small, you can use water sandpaper to grind off the rust and then spray a layer of anti-rust paint. 2. Rust affecting the primer: If the rust has damaged the primer, the rust must be ground off, the primer sprayed, and then the topcoat applied. 3. Severe rust with large areas of paint peeling: If the door has severe rust with large areas of paint peeling, the rusted paint must be completely removed, filled with putty, and smoothed. After the putty hardens, repaint the door. 4. Rusted-through door: If the door is rusted through, repair is generally not recommended as the effect is limited, and rust may reappear after some time. It is advisable to replace the door.