Term: sagging

In painting, "sagging" refers to a paint defect where the paint film runs or droops downward after application, creating uneven, thick, or wavy areas on the surface. It typically occurs when:

• Too much paint is applied in one coat (over-application)
• The paint is too thin or has been over-thinned
• The surface is too smooth or non-absorbent
• Environmental conditions are unfavorable (e.g., high humidity or low temperatures)
• The painter applies paint at the wrong angle or with poor technique

Prevention tips:

• Apply paint in thin, even coats
• Follow manufacturer’s recommendations for thinning
• Ensure proper surface preparation
• Avoid painting in extreme weather conditions
• Use appropriate tools and techniques for the surface and product

Sagging not only affects the appearance but may also compromise the durability of the paint job if not corrected.