PEELING

Delamination

A loss of adhesion or separation of the paint film from the substrate.

CAUSE

  • Improper preparation of the substrate (sanding and cleaning).
  • Omitting or applying an incompatible undercoat to a specific substrate (e.g. aluminum, galvanized, plastics, etc.).
  • Insufficient flash/dry time or exceeding the product's maximum recoat time.
  • Insufficient film thickness of undercoat, or topcoat.
  • Clearcoat finishes:
    • Insufficient film thickness of clearcoat.
    • Solvent cleaning basecoat before clearcoating,
    • Sanding basecoat before applying additional basecoat or clearcoat.
    • Basecoat applied too dry.
    • Clearcoat applied too dry.
    • Baking basecoat before applying clearcoat.
    • Using fisheye eliminator in basecoat.
    • Incompatible clearcoat.
    • Use of incompatible "adhesion promoter".
    • Excessive basecoat film thickness.
    • 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

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