Runs   

Cause

• Incorrect spraying viscosity, spraying technique, flash-off times between coats, and film thicknesses

• Defective spray gun set up

• Incorrect spraying pressure

• Temperature of paint, substrate or spraybooth too low

• Incorrect choice of hardeners and thinners

Prevention

• Follow application recommendations on technical data sheets

• Ensure that the spray gun is in good working order

• Warm object and material up to room temperature of 20 °C/68 °F

• Use correct combination of hardeners and thinners

Remedy

• Sand and polish

• Sand and repaint