What Causes Bubbling in the Hood Paint?
1 Answers
Bubbling in the hood paint is caused by poor paint quality, improper construction conditions and processes, and excessive paint thickness. Poor paint quality: The intermediate coating has relatively poor sealing ability. If there is moisture in the primer or intermediate coating, it can evaporate through the micropores of the paint film. However, the topcoat layer has a relatively stronger sealing property, especially for two-component paints after complete curing. If there is moisture trapped within the paint film, it cannot evaporate. Under the influence of weather temperature and the expansion of underlying moisture, localized stress on the topcoat film can cause bubbling. Solution: Use high-quality paint for touch-ups. Improper construction conditions and processes: Paint application requires strict conditions and techniques. The surface must be completely free of moisture before painting. The initial surface filling (putty) must be thoroughly dried in a dry environment before entering the paint booth for spraying. The air pipeline connected to the spray gun must remain dry, with no trace of moisture. These factors are also significant causes of paint bubbling. Solution: Visit a reputable repair shop for touch-ups. Excessive paint thickness: Lack of attention during the painting process or limited technician skills can often result in an overall paint thickness that is too thick, causing the paint to sag. Additionally, improper polishing afterward can set the stage for future paint bubbling. Solution: Seek experienced professionals for touch-ups.
