*** BLISTERING
Blisters are small pockets of vapor that form beneath paint film, caused by painting in direct sunlight and over hard or glossy surfaces. They are also caused when water, trapped inside paint, vaporizes and bubbles on exposure to intense heat from the sun.
Solution: Break open a blister. If bare wood shows, moisture is the problem. If a sound layer of paint is under the blister, it is caused by heat. In either case, blisters should be scraped, sanded and primed Oil or Acrylic Latex Primer Sealer prior to repainting with Premium Plus House & Trim.
Tags: Painting Information