Will spray paint corrode the original car paint?
2 Answers
Spray paint will not corrode the original car paint. Here is an introduction to car paint-related content: Spray paint: White spray paint itself is used to repair scratches on cars, but there is certainly a difference compared to baked paint. Adhesion: The adhesion of spray paint is much worse than that of baked paint, and it may start peeling off after about a year. The difference in paint not only has a certain color difference from the original factory paint but also lacks the gloss of baked paint. Therefore, if you have requirements for the paint surface, try not to choose spray paint. Here is extended information about scratches: Scratches: During daily use of the car, it is unavoidable to be scratched by some hard objects, leaving marks on the paint, such as zippers on a passerby's backpack or small stones splashed while driving, which can leave slight marks on the car paint. Coating treatment: Minor scratches are the most common on the car body but do not affect its appearance. For such cases, they can generally be ignored. If you are a perfectionist, you can also go to a car beauty shop for coating treatment on the paint surface, which can restore some minor scratches on the car paint.
DIY spray paint can indeed corrode the original car paint. I tried it on my old car before—sprayed directly without sanding, and after two weeks, the paint bubbled and peeled. This happens because solvents in the spray paint penetrate the original paint layer, softening or reacting with it, especially in high humidity or areas with large temperature fluctuations, where the issue becomes more noticeable. If the original paint is metallic or clear-coated, the chemical incompatibility of the spray paint can more easily damage the protective layer. To avoid this, regular car cleaning is essential. Before spraying, sand the surface smooth and apply a primer protective layer to reduce risks. Overall, small touch-ups are manageable, but for large areas, it's best to leave it to professionals to avoid damaging the entire panel and incurring costly repainting. Personally, I think saving money is good, but proper paint maintenance is what really pays off.
