We are converting an attached garage to a living room. The garage slab is uncracked and in good condition. It is surrounded by cinder block frost wall. The new floor will be 2 x 10 sitting on top of the cinder block which is 10" above the existing cement floor. There will be plumbing for a new bath and ducts for HVAC in between the new floor joices. We are not sure of the best way to insulate and make vapor barrior for the new floor. Does the space under the new floor need to be vented or shopuld it be filled with unsulation??? Our other concern is critters getting under the floor and causing problems. Any help would be greatly appreciated.