
Paint application is necessary under the following circumstances: 1. When the paint surface is severely aged and cannot be restored through polishing techniques; 2. When the paint surface is heavily eroded by lens effect and loses significant gloss; 3. When the paint surface has a thick oxidation layer with localized corrosion that cannot be polished away; 4. When the paint surface has deep scratches that cannot be removed by polishing; 5. When the paint surface has localized or extensive damage. Loss of adhesion may occur between the topcoat and primer, between the topcoat and old paint layers, or between the primer and metal surface. During the painting process, the feathering repair method should be employed. This involves applying the second coat of primer over a slightly larger area than the first, followed by adding approximately five times the amount of thinner for edge feathering during application.

When there is damage to the car body, repainting is necessary. For example, after driving for many years, I've encountered numerous scratches and collisions. Once, while parking, my car got a deep scratch that exposed the primer. Without repainting, moisture would seep in and quickly cause rust and corrosion. Or, after a minor collision where the bumper was dented, repainting was essential to prevent rust and restore the original appearance. When parked under trees for long periods, bird droppings and tree sap can corrode the paint, causing fading and bubbling over time. Timely repainting protects the metal and extends its lifespan. Additionally, before selling a used car, a full-body repaint can enhance its appearance and value. I believe repainting isn't just about aesthetics—it's about protecting your investment and avoiding costly repairs later. That's why I usually choose a reliable shop that uses eco-friendly paint. Moreover, in high-humidity areas, the car body is prone to aging, so proactive repainting can save a lot of hassle. In short, repaint early—don't wait until rust eats through the metal to regret it.

When I want to give my beloved car a new color, I consider painting it. Recently, I saw the popular matte black online and couldn't resist getting a full-body paint job, instantly boosting its cool factor. Actually, painting isn't just for damaged cars—if the original color is outdated or your personal preference changes, a new paint job can add personality. Unlike wraps that don't last long and leave adhesive marks, paint is more durable. For minor fading, a partial repaint can refresh the look. I've also seen friends decorate their bumpers with painted designs—pretty cool. The key is that painting isn't expensive; find a professional shop using high-quality paint, and it can last for years. Regular maintenance, like avoiding prolonged sun exposure to prevent cracking, helps. If you want your car to stand out, painting is a great choice—don’t let it keep running the streets looking the same.

When the car body is severely rusted or aged, it needs to be repainted. One of my old cars was parked outside exposed to wind and sun, and after a few years, the paint began to peel, exposing the metal. I quickly did a partial repaint to seal it and prevent the rust from spreading inside. Also, after an accident where the car body was deformed and repaired, repainting is necessary to protect the new sheet metal. For minor scratches like those from tree branches, if they're not deep, there's no need to rush to repaint—wait until there are more to deal with them together to save money. Repainting also helps waterproof and prevent stains, especially during the rainy season, so don't delay. Choosing water-based paint is more eco-friendly and doesn't affect health. In short, repainting should be done flexibly based on the situation, and not every little issue requires a full-body repaint.


