What causes blistering on a new paint respray?

Blistering on a new paint respray is often caused by moisture trapped beneath the paint surface, which can occur if the surface wasn't properly cleaned or dried before application. It can also result from applying paint in high humidity conditions or using incompatible paint products. Additionally, insufficient primer adhesion or applying paint too thickly can lead to blistering as the solvents escape during the drying process. Proper preparation and environmental control during application are essential to prevent this issue.