Small, crater like holes or indentations in the paint surface, varying in size from pinholes up to 1 cm in diameter. Usually the larger craters occur individually, whilst the smaller ones are often found in small densely packed clusters. Small impurities are often visible in the centre of the crater.
Variations in the surface tension of the paint. The most common reasons for this are:
Remove the paint completely from the affected area repaint, following the recommended preparation procedure. In extreme circumstances it may be necessary to use an anticissing additive. Always consult the paint manufacturer before using such additives.