What are the effects of rainy weather on car paint?
2 Answers
Rainy seasons are prone to bacterial growth. After rain, the rainwater stains on the car body will gradually shrink, increasing the concentration of acidic substances in the rainwater. If these stains are not promptly rinsed off with clean water, over time, they can damage the topcoat. Below is a detailed introduction to car paint: 1. Overview: The primary function of car paint is to protect the vehicle body from corrosion. Additionally, car paint enhances the aesthetic appeal of the vehicle. Car paint is also a type of coating. The purpose of a paint booth is to provide a clean, safe, and well-lit painting environment for car painting operations, ensuring that the spraying process is free from dust interference and maintaining paint quality. 2. Composition: Car paint mainly consists of resin, pigments, additives, fillers, curing agents, solvents, etc. Metallic car paint usually includes glittering metallic powder (aluminum powder), while pearlescent paint typically contains mica particles.
Rainwater does have a real impact on car paint, especially the acidic substances in acid rain which can gradually corrode the paint surface, causing it to lose its shine or even bubble. Having worked in the car industry for many years, I often see water spot marks left on car paint after rain—these are traces from evaporated rainwater. If not washed off promptly, they can seep into the clear coat layer and accelerate oxidation. Even more concerning is urban air pollution mixing with rainwater to form acid rain, which has stronger corrosive properties and can lead to paint aging and brittleness over time. During the rainy season, it's best not to let rainwater sit on the car for too long. Wash the car as soon as possible after rain to remove stains, and consider applying a protective coat of wax. Regular paint maintenance is key—just like skincare, frequent washing and protection can prevent major repairs. Remember to use pH-neutral car wash soap to avoid damaging the paint.
