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Spotting: Glossy Spots
 
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Description:
There are glossy spots on a surface painted with a flat or low gloss coating.

Cause:
  • There was abrasion from cleaning surface, a.k.a. burnishing.
  • Certain areas received more primer due to application error.
  • There was application over both sealed and unsealed surfaces. For example, the finish coat on a wall may appear to have more gloss over areas where there is overspray from trim enamels or lacquer products.
Prevention:
  • Use non-abrasive cleaners when cleaning the surface.
  • Always apply a uniform coat of primer over the entire surface.
Cure:
Sand the glossy areas and repaint the entire surface.

  
Courtesy of The Rohm and Haas Paint Quality Institute

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