Clearcoat Yellowing

After clearcoat application, discoloration noticed compared to adjacent panel.

Causes

  • Incorrect, contaminated or expired hardener used
  • Excessive clearcoat film build over repair

Prevention

  • Use recommended hardener
  • Lids should be dated upon initial opening, and tightly replaced after each use
  • Follow recommended film build per product data sheet

Correcting

  • Once finish is thoroughly cured, sand and refinish affected area