Searched online and found an image that can identify what kind of white "growth" I have in the crawl space foundation. According to the image, it looks like salt efflorescence. What to do? Is it enough to adjust the plastic that covers the foundation? It has broken in some places and therefore is not functioning optimally as a condensation barrier. I also have sand on top, and from what I understand, the sand should only be under the plastic. Should I then brush away the salt efflorescence, address this, and see how it develops??? Terrified of mold issues!!! However, there is no smell and no growth on the subfloor. I should also mention that the efflorescence is on the foundation wall, especially at ground level.
