What are the causes of paint bubbling on car surfaces?

[StAriel]

The causes of paint bubbling on car surfaces may include poor paint quality or improper repainting procedures, such as applying the topcoat before the primer has fully dried. Moisture trapped between the topcoat and body filler can evaporate under high temperatures, creating air pockets that cause the paint to bubble. Additionally, rust formation on the underlying metal due to moisture exposure can also lead to paint bubbling. Here are some methods to address paint bubbling: 1. Rust prevention treatment: Remove the bubbled paint area, apply rust prevention treatment, then fill with body filler. Wait for the filler to completely dry, sand it smooth, and finally repaint the surface. 2. Paint quality issues: If the bubbling is due to paint quality or repainting errors, you may be eligible for compensation. It's advisable to have the issue assessed by professionals at a certified repair shop or 4S store for proper handling.