Top coat lifts the undercoat, which causes wrinkling, expanding and bubbling.
Common Cause
Spray top coat before undercoat dries.
Unsuitable flash-off time between coats.
Bad solvent resistant of undercoat or too prowerful solvency of top coat.
Bad adhesion of undercoat.
Excessive thickness of each layer.
Repair
Lightly sand the affected area and seal the surface, then re-spray; Extra care to the sensitive substrate; Keep each layer thin and flash off time long enough; If lifted seriously, completely remove the entire area and apply the paint system again.
Comments