I'm trying to figure out the best way to insulate my basement with poured concrete walls. Problem is, I live in a small village in Peru and most insulation materiales aren't available here. The only thing I can find is unpackaged fiberglass, which I think would become a quick mold problem. So...

We just built new construction 6 months ago. They did not finish a portion of our basement stairway (the entire basement is unfinished). I assumed it was because it was an outside wall. However, now I'm wondering if it's because there is no room to add drywall and it's a design flaw. We are...