Why does car paint bubble after just over a year?
3 Answers
It may be due to excessively high paint viscosity or excessive spraying air pressure. Below is relevant information: Car painting: Car painting refers to applying a layer of paint to the car's surface to achieve a protective effect. Automotive paint generally uses baking paint. In automobile manufacturing plants, after the frame and body shell are welded, the next process is painting. Types include standard paint, metallic paint, and pearl paint. Car painting process: applying putty, sanding, painting, etc. Hazards: In painting, various solvents contain benzene and benzene compounds, such as toluene, xylene, etc. Thinners like ethanol and butanol, commonly used industrial solvents, are also toxic, with some even highly toxic, such as methanol. The presence of these toxic substances can cause certain harm to the human nervous system, respiratory system, and skin.
The car paint started bubbling after about a year, and I have quite a bit of experience to share on this. The main reason lies in underlying issues during the painting process: moisture infiltration is the most common, such as painting in overly humid weather or applying paint before the cleaned car body is completely dry. Impurities like dust or grease in the paint layers can also trap air and moisture beneath the surface. Combined with thermal expansion and contraction due to temperature changes, bubbles gradually appear. If low-quality paint is used, its unstable nature makes problems more likely. Don’t underestimate these bubbles—once they burst, they introduce moisture, leading to metal corrosion on the car body. I recommend visiting a professional repair shop as soon as possible; they may need to sand and repaint the affected area. For prevention, choose dry days for painting and ensure the shop has advanced equipment.
Last time, my car's paint started bubbling just over a year after a respray. I later discussed this with an expert. Bubbling is usually caused by inadequate cleaning before painting, leaving hidden issues like moisture or dirt that wasn't properly removed. Another factor is poor environmental control during painting - fluctuating temperatures causing uneven contraction of paint layers and bubble formation. Low-quality paint is also a common culprit, making it important to choose reputable brands. Don't delay if bubbles appear - it's not just unsightly but can lead to rust and accidents. I immediately took it back to the shop for a redo, learning that you should monitor cleaning standards throughout the painting process. For prevention, conduct regular post-paint body inspections and avoid painting during rainy weather.
