Originally Posted by Bondo
Poor Preparation before it was painted on could also possibly be a contributing factor......
Bondo is correct. The individual who applied the texture probably should have sealed the wall before application, especially if the area is prone to high humidity. But, I think you may have a deeper problem than just texture.
Is the house insulated? Do you know if it has a vapor barrier or house wrap?
If you're getting temperature fluctuations in your wall that are enough to cause condensation, you could eventually have a problem with mildew.