I own a 9 yr. old home that has a finished basement. I don't know why other than cost as to why the previous HO didn't insulate the walls. The ceiling is but not the walls. My question is...is it very risky to blow insulation into the wall area between the sheetrock and foundation walls. There is about a 6" space there now. There hasn't been any moisture problems for the 2 yrs. I've been here. No smells or dampness. Has anyone ran into this issue before and remedy the problem without removing the walls.