What causes a latex paint to bubble after it is rolled onto the wall?

Anonymous asked 5 years ago

I did some minor repairs to a room prior to painting, and after wiping the walls down with a damp cloth I rolled the paint on (latex satin finish) and after a short time bubbles appeared in various places. Some were very small, and others may have been the size of a dime! I had previously painted this wall about 2 yrs ago with the same type of paint.

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