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Description:
The presence of dome shaped paint bubbles that indicate a loss of adhesion.
Cause:
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
Prevention:
Eliminate the source of the moisture. Control the moisture below the substrate by venting, removing leaks and caulking.
Cure:
Remove all of the affected areas by scraping and sanding the surface. Power washing may be necessary.
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Courtesy of The Rohm and Haas Paint Quality Institute
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