5
IdentIfyIng PaInt defects
BlISTERING
Description
Small bubbles or pimples ranging in size from
.5mm - 1.5mm in the topcoat application
causes
• High humidity
• Improper surface cleaning
• Incompatibility of materials
• Excessive film builds
• Water, oil, or dirt in airlines
prevention
• Insure you are within recommended film build
per product data sheet
• Select proper reducer for spray conditions
• Carefully clean substrate
• Do not touch cleaned areas with bare hands
• Drain and clean compressor and regulator to remove
trapped contaminants
correcting
• Establish where the blisters are
• If in between layers, sand blisters down to a
solid surface and refinish
• In severe cases the finish will need to be removed and refinished
