I'd like to know the best way to keep the basement floor warm. Would it be feasible to nail 2X2 to the concrete & cover with 5/8 plywood, & add a small fan under the plywood for air movement?
Answer:
If you plan to heat the floor this way, you might consider not nailing the sleepers to the floor. Rather, block them up sporadically a quarter inch or more and pump warm air into the cavity underneath. The sporadic blocking (shimming) will permit air flow and if you pump air in at not more than 7 or 8 PSI, and then leave an outlet, (perhaps dumping into the return air ducting of the furnace) at the opposite corner, I think it would work. There is a system on the market that does this for the whole basement and it takes the walls into consideration too but at a much raised cost.
