DIY

You're doing the right process. Concrobium is great, just make sure you get the relative humidity down below 40% for it to work properly. The good thing about it is that it creates a permanent film on most surfaces that doesn't allow mold to grow again. Luckily mold is generally something that gets you sick over time, most mold anyway. It's not an instant thing, and the spores are always in the air and on surfaces regardless of what you do. I'm not an expert, but I do think that a lot of people see any type of mold and associate with the classic black mold. Most of the time, it's not that type of mold, even if it's black in color.

Good that you had treated wood there, but is there anything below this area, like a basement or crawlspace? If it's anything other than a concrete slab, you may have to check that out to see how damaged it might be.