• The lacquer is aired too slowly compared to the drying, which causes air bubbles to remain trapped in the film.
  • The humidity in the air and lacquer room is too high.
  • The final lacquer is applied too quickly.
  • The base lacquer has not completely wet the pores (to the bottom).
  • The wood’s accessory components do not accept the lacquer (common with PE lacquers).


  • Use an anti-foaming agent and/or slower thinner.
  • Control the humidity, lower as required, and use a thinner adapted for such conditions.
  • Dry the bottom coat (primer) sufficiently before applying the next coat of lacquer.
  • Use a base lacquer with good wetting ability.
  • Use special insulation on problematic species of wood (especially exotic species such as teak, rosewood, etc.).
  • Apply a layer of PU lacquer/insulation before applying the PE lacquer.


  • Sand the surface down to the base/substrate.
  • Re-apply the lacquer according to the recommendations.

For more information, do not hesitate to contact us.