Blushing / Hazing / Milky / Solvent Entrapment
A milky white haze or mist formed on the surface of the paint film.
POSSIBLE CAUSE
Moisture condensing on, and being trapped in the wet film or solvent trapped underneath. This may be due to:
- Application during cold, wet or humid weather.
- Use of too fast or poor quality thinner.
- Increased airflow over the film to speed up solvent release.
- Recoating or topcoating too soon
- Application of heavy coats
SOLUTION
- If possible, avoid spraying air drying paint during rainy or exceptionally cold or humid weather.
- Use the correct grade of thinner.
- Reduce compressed air pressure to minimize the cooling effect.
- Allow solvent release to take place naturally. Do not force dry.
- Ensure that the conditions are appropriate for application and curing
- Apply coating at recommended spread rate
- Recoat as specified by manufacturer
PRODUCTS RECOMMENDED
- Wipe surface with solvent, usually denatured alcohol
- If denatured alcohol does not make any improvement, coating will have to be sanded and reapplied.