01-22-2021, 03:14 PM
The limestone foundation is solid, 120 years old. The basement is always dry. The house is new to us, so have no past experience, but did not seem fuzzy when we bought it two years ago. Perhaps former owner swept it off. The fuzz is powdery, not gritty. No odor.. I am not a chemist or biologist, so wonder what it might be. Thanks for the replies.