My brother in law is helping me do most of the work. He's very knowledgeable on building. So it's not like I'm doing it all by myself.
I put in a sub floor using Delta-FL and OSB. Total cost was right around $1 per sq ft. I did this mostly for the acoustical benefits of having a wood floor but also as a vapor barrier and insulation. Later on I need to go back and put a few more screws in the floor to get rid of a little rattling sound as you walk over it in certain places. But other than that I love the results. No more walking on a cold and HARD concrete floor.
