Cloud formation


Description of the defect

Irregular, cloudy matting of the surface due to slight differences in the degree of gloss. The lower the degree of gloss, the darker the substrate and the larger the surface, then the more vulnerable the surface during spraying.

Cause of the defect

  • different application quantities, coat too thick.
  • nozzle too large or defective.
  • pressure too low, atomising pressure not adapted
  • spraying arc too narrow.
  • different substrate pre-treatment, i.e. different base coat, hardening affected .

Defect solution

Sand down and recoat cross-wise with suitable application parameters, if necessary add a second coat with a short intermediate drying period.