DRIcore Subfloor Systems is the essential air gap subfloor system with a moisture barrier to insulate your family from cold, hard, damp, concrete floors. The secret to the comfort of DRIcore is the creation of a permanent air space which keep concrete floors dry, comfortable and warm.It comes in easy-to-install 2x2'panels just 7/8'' high, with a wood surface and dimpled plastic on the underside that locks out cold and moisture.