Paint Blisters and Bubbles -- what are they?

Paint blisters or bubbles occur when the paint film lifts from the underlying surface. The loss of adhesion between the paint film and surface is usually caused by heat, moisture or a combination of both. This condition eventually leads to peeling. It can be corrected, but the underlying cause of the problem must be addressed or it will recur. Check out this helpful article on Paint blisters or bubbles:

Blistering Paint Bubbling Paint Help | Benjamin Moore