- 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.