Cause

1. Improper preparation of the substrate (sanding and cleaning).
2. Omitting or applying an incompatible undercoat to a specific substrate (e.g. aluminum, galvanized, plastics, etc.).
3. Insufficient flash/dry time or exceeding the product's maximum recoat time.
4. Insufficient film thickness of undercoat, or topcoat.
5. Clearcoat finishes:
   1. Insufficient film thickness of clearcoat.
   2. Solvent cleaning basecoat before clearcoating.
   3. Sanding basecoat before applying additional basecoat or clearcoat.
   4. Basecoat applied too dry.
   5. Clearcoat applied too dry.
   6. Baking basecoat before applying clearcoat.
   7. Using fisheye eliminator in basecoat.
   8. Incompatible clearcoat.
   9. Use of incompatible "adhesion promoter".
   10. Excessive basecoat film thickness.
   11. Over reduction, under reduction, or incompatible reducer used in basecoat.

 

Repair

• Remove the finish in the affected area, featheredge, and refinish.
• Or, strip to bare substrate and refinish.

 

Prevention

1. Clean and prepare all substrates according to product recommendations.
2. Use the recommended undercoat (primer) for the substrate being finished. Plastic parts may require use of special primer and flex additive for maximum performance.
3. Recoat all products within their recommended minimum and maximum recoat time.
4. Apply a sufficient number of coats to obtain the recommended film thickness.
5. Follow basecoat/clearcoat application procedures using only recommended/compatible products.
6. "Adhesion promoter" should only be used when specifically recommended.