Cause

1. Topcoat applied in heavy, wet coats.
2. Inadequate flash time between coats.
3. Insufficient film thickness of topcoat color or clearcoat.
4. Insufficient drying/curling of undercoats before applying topcoats.
5. Using a poor grade and/or too fast evaporating thinner/reducer for spray conditions.
6. Improper cleaning of the substrate.
7. Insufficient air movement during and after application.
8. Spraying over a deteriorated or solvent sensitive substrate finish without proper priming or sealing procedures.
9. Natural weathering of the finish.

 

Repair

• Allow finish to cure thoroughly, compound or polish to restore gloss.
• Or, sand and refinish.

 

Prevention

1. Apply the topcoat according to product label directions using the recommended gun set-up and air pressure.
2. Allow all coatings sufficient flash between coats.
3. Apply sufficient number of coats to achieve recommended proper film thickness. Check with film thickness gauge if possible.
4. Allow undercoats to thoroughly dry/cure before topcoating.
5. Select recommended thinner/reducer based on temperature, humidity, air movement, and size of repair.
6. Clean substrate thoroughly before and after sanding.
7. For air dry situations:
   1. allow exhaust fan to run 40 minutes or longer after spraying;
   2. open booth doors after finish is dust free; and
   3. maintain a shop temperature of 60 degrees fahrenheit or above, especially when drying overnight.
8. For maximum holdout, use a premium two component undercoat system.
9. Properly wash and care for the finish on a regular basis.
10. Using premium topcoat color or clearcoat system will provide maximum gloss and durability.