Phenomenon
Cracks or lines of various lengths and widths in the topcoat finish often resembling the cracking of dried mud.
Cause
A. Excessive film thickness of the undercoat and/or topcoat
B. Paint ingredients not thoroughly stirred or agitated
C. Insufficient flash time between coats
D. Using the paint with low crack resistance
Repair
Remove all cracked paint film and refinish.
Prevention
A. Take sufficient flash time between coats.
B. Follow the standard film thickness.
C. Select the paint carefully.
