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The presence of dome shaped paint bubbles that indicate a loss of adhesion.

Moisture or vapor has been trapped caused by the following:
  • Rain
  • High humidity
  • Wet surface
  • Painting when temperature is too high
  • The surface has not been properly cleaned

Eliminate the source of the moisture. Control the moisture below the substrate by venting, removing leaks and caulking.

Remove all of the affected areas by scraping and sanding the surface. Power washing may be necessary.

Courtesy of The Rohm and Haas Paint Quality Institute

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