Wrinkling

The surface of the paint contains irregular grooves or ridges resembling the skin of a prune.

Cause:

1. Excessive film thickness or 'piling on' of heavy wet coats.
2. Placing a newly painted finish in hot sun too soon after spraying.
3. Using lacquer thinner to reduce synthetic enamel.
4. Spraying in extreme hot, humid weather conditions.
5. Under reduced and/or too fast evaporating thinner/reducer for spray conditions.
6. Air pressure too low during spray application.
7. Force drying of air-dry enamels without the recommended additives.

Repair:

1. If defects are minor: sand the top surface smooth and allow to cure, then refinish.
2. If defects are severe: remove the affected area and refinish.

Prevention:

1. Avoid excessive film thickness and heavy coats. Always allow for sufficient flash times.
2. Keep newly painted finish away from direct sunlight until finish has dried/cured.
3. Use reducer that is specifically recommended for the topcoat.
4. Use the recommended reducer, additive, and/or retarder when spraying in hot humid weather.
5. Select recommend thinner/reducer based on temperature, humidity, air movement, and size of repair.
6. Use the proper reduction ratio and spray at recommended air pressure.
7. Select the recommended additives to suit drying conditions. Follow force dry temperatures and time recommendations.