More on the floor

After discussions and such, it's been determined that we won't be able to put any sort of insulation in the family room floor between the subfloor and the finished floor. Anything we put down just won't stand up to the abuse. The only option really would be to put down some sleepers and put insulation in the grid that they form, nailing the finish floor to the sleepers.

But, we don't have the space to do it, despite having over 2 inches of clearance between the door bottom and the subfloor. Just not quite enough room. We'll just put the 15# roofing felt down, then the wood, and go ahead with fiberglass batts in the joists this summer.