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Adhesion Loss, Polyesters

Description
Loss of adhesion between the polyester filler and the substrate.

 

 

Origin and Potential Causes:
  • Substrate not carefully prepared.
  • Polyester material unsuitable for galvanized substrate.
  • Too high surface temperature during forced drying.
  • Undercured filler - too much or too little hardener.

 

Prevention Techniques:
  • Clean and sand substrate thoroughly.
  • Follow the manufacturer's instructions for forced drying.
  • Use proper mixing ratio of polyester materials.
  • Ensure the hardener is thoroughly mixed.

 

Remedy
  • Sand the damaged repair area well.
  • Redo the repair and refinish.

 
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