• Occurs when chemical reaction takes place between two incompatible substrates
• High film builds
• Overcoating an uncured substrate
• Wet-on-wet system combined with incorrect hardener/thinner
• Avoid working on high film thicknesses
• Ensure all products used are part of a refinish system
• Allow materials to flash off and dry in accordance to technical data sheets
• Use recommended hardener/thinner combination
• Remove all coating and refinish from metal stage
• Alternative remedies are not guarenteed and can be unstable