HMG Troubleshooting
Blooming (Blushing)
Description
Milky / Dull effect on paint film
Causes
- Excessive humidity levels
- Use of fast thinners
- Cold draughty sprayshop
- Poor air movements
- High spraying air pressures
Prevention
- Ensure booth is at 68°F - 72°F
- Use a good quality retarder / non-bloom thinner
- Reduce spraying pressures
Rectification
- Minor cases can be polished or compounded
- Slow retarder thinners can be sprayed over the job to rectify
- Severe cases have to be flatted and re-coated observing the above