Abstract: Disclosed herein is a flooring system adapted to be laid on a rigid supporting slab, which system comprises an understructure resting on the supporting slab, and a floating floor assembly comprising a series of parallel and spaced apart steel strips resting on the understructure, a layer of plywood on the steel strips, a series of floor boards in abutting parallel relation to each other, extending transversely to the steel strips, and located on the plywood layer, and a plurality of fasteners extending through the floor boards, through the plywood layer, and through the steel strips.