Paint With Confidence
Exterior Common Issues & Solutions
Text & image courtesy of the Rohm & Haas Paint Quality Institute
Sagging
Downward “drooping” movement of the paint immediately after application, resulting in an uneven coating.
Possible Cause
- Application of too heavy a coat of paint.
- Application in excessively humid and/or cool conditions.
- Application of overthinned paint.
- Airless spraying with the gun too close to the substrate being painted, or moving the gun too slowly.
Solution
If paint is still wet, immediately brush out or re-roll to redistribute the excess evenly. If the paint has dried, sand and reapply a new coat of top quality paint. Correct any unfavorable conditions: Do not thin the paint; avoid cool or humid conditions; sand glossy surfaces. Paint should be applied at its recommended spread rate; avoid “heaping on” the paint. Two coats of paint at the recommended spread rate are better than one heavy coat, which can lead to sagging. Consider removing doors to paint them supported horizontally.
