Close up image of a surface with uneven coating.

Sagging - INTERIOR/EXTERIOR

Downward “drooping” movement of the paint immediately after application, resulting in an uneven coating.

Causes

  • Application of too heavy a coat of paint.
  • Application in excessively humid and/or cool conditions.
  • Application of over thinned paint
  • Airless spraying with the gun too close to the substrate being painted, or moving the gun too slowly.
  • Application over a glossy, slick surface that does not provide sufficient “tooth” for the new paint to stick.

Solutions

  • If the 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.
  • Two coats of paint at the recommended spread rate are better than one heavy coat, which can also lead to sagging. Consider removing doors to paint them supported horizontally.

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