Formation of bubbles or foam and resulting small, round concave depressions. When bubbles break in a paint film, during paint application and drying.
Possible Causes:
- Shaking a partially filled can of paint.
- Using low-quality latex paint, or paint that is old.
- Applying (especially rolling) paint too rapidly.
- Using a roller cover with the wrong nap length.
- Excessively rolling or brushing the paint.
- Applying a gloss or semi-gloss paint over a painted surface without first priming.
Solution:
- Avoid excessive rolling or brushing.
- Avoid using paint that is more than a year old.
- Prime porous surfaces before applying paint.
- If applying gloss or semi-gloss paints, prime before painting and use a short nap roller.
- Avoid vigorous shaking of the paint can or swirling the brush in the paint.
- Sand problem areas before repainting.
