Can car paint be done on rainy days?
3 Answers
Car paint can be done on rainy days, but the effect won't be as good as on sunny days. After all, paint adhesion is poorer on overcast or rainy days, making it prone to peeling. Additionally, whether the 4S shop strictly follows the standard operating procedures is also crucial. Relevant information is as follows: 1. Painting: Generally, after the paint is applied, as long as the standard process is followed, the surface can be touched after 2 hours, and the hardness of the paint can reach 80% after 24 hours. You can drive the car after 24 hours, but it is recommended not to wash the car for 2 to 3 days, as this depends on the actual situation of the paint quality and techniques. 2. Precautions: If the car has just been painted, be careful not to let the newly painted areas come into contact with water or dust. It's best not to drive it out on rainy days because the fresh paint is still delicate and may leave marks when exposed to rain, which can be unsightly and sometimes cannot be removed even by polishing. It's best to park the car in a garage at night.
A few days ago, my car got scratched, and I chose a rainy day to get it repainted—big mistake! Within two weeks, bubbles and cracks appeared on the paint. The mechanic explained that the high humidity on rainy days makes it harder for the paint to dry thoroughly, allowing moisture to seep into the paint layers and weaken adhesion to the metal surface. Now, I always wait for sunny days with low humidity to do paintwork, and the gloss retention has been excellent. Plus, the drying time is halved—it hardens in just half a day, unlike rainy days when it takes a full day and attracts dust. If I’m in a rush and have no choice, I’ll look for a shop with a professional dehumidifying paint booth, but the results still don’t compare to sunny-day painting.
Our workshop is reluctant to paint on rainy days. When the air humidity exceeds 80%, moisture cannot be completely removed in the baking room, which can cause the paint layer to turn white, and in severe cases, fish-eye patterns may appear. We have to manually adjust the dilution ratio and add slow-drying agents, which is time-consuming and labor-intensive. Ordinary shops also dare not set the drying temperature too high for fear of cracking the primer. Even if the paint looks fine at the time, the repair rate is high, and complaints about peeling and bubbling are particularly common three weeks later. The safest approach is to check the weather forecast and choose three or four consecutive dry days for painting, ensuring thorough curing of the paint surface.
