My other question is about using a product such as Drylok. About half of the basement will be finished floor, and half will remain as exposed concrete. I was thinking of using Drylok on the slab underneath the finished section to further prevent moisture buildup under the underlayment. My thought was to leave the unfinished area free of Drylok for no reason other than saving some $$ on Drylok. Anyone have thoughts on this good, bad or otherwise?