Why is the paint film not sticking to the surface

Paint fails to adhere to substrate or underlying coats of paint. Loss of adhesion can manifest itself in two different ways.

• Total lack of adhesion occurs below the entire paint film.
• Lack of adhesion occurs between coats.

What are the possible causes?

• Surface contamination or condensation, incompatibility between coating systems.
• Poor surface preparation and poor drying condition.
• For 2-pack products, wrong mixing ratio of base & hardener.
• Diluting the primer thereby weakening its ability to stick to the surface.

How can I fix the problem?

• Depends upon the extent of adhesion failure. Removal of defective areas will be necessary prior to adequate preparation and application of correct coating system.
• Ensure that the surface is clean, dry and free from contaminants before painting.
• Always use suitable primer followed by top coat as recommended by paint supplier.
• Do not apply the paint too thick.