We aren't disagreeing. Mold spores are everywhere, and will grow in favorable conditions. Meaning moist and warm.
I was thinking about the extent of the concentration of current mold that may be present, producing the spores which is causing the respiration, etc. problems. If he has it growing visibly, it needs the moisture remediation , then drywall replacement, or whatever, IMO. It may not even be visible, but inside the walls or under the carpeting, etc. Air and other sampling will tell.
But we can arm-chair quarterback this to death. If he has an active mold problem, he needs reputable professional help to find it, evaluate the extent, and take it to whatever level remediation needed. It could be just solving the moisture problem, which , as you say, is the first vital component, or it could be more.
Last edited by las; 09/19/17.
