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Clouding

Definition

Spots or stripes of light and dark patches, mainly seen in metallic finishes.

Wolkenbildung

Causes

  1. Uneven basecoat application
  2. Basecoat flash-off time too short before application of clearcoat
  3. Basecoat applied too wet or too thin
Wolkenbildung
Scale 1:1
Wolkenbildung
10 x magnification

HOW TO AVOID

  1. Apply basecoat evenly. 
  2. Keep to recommended flash-off times.
  3. Apply the basecoat as recommended in the technical data sheets

REPAIR

If clouding/mottling occurs during the application of the basecoat, compensate by spraying a mist coat (basecoat) over the affected area. If clouding/mottling occurs after the clearcoat has been applied, allow to dry, sand down and repaint.