Pergo Presto works and looks great in the kitchen,we have installed it several times for clients and they seem to be happy with it. The durability of this product will last a long time. The only thing is not to leave water sitting on the floor, duh, where it could seep thru the seams,this could cause the floor to swell. The laminate coat on top will prevent stains to adhere. If your subfloor [whatever it is] is stuck well, theres no reason you cant go over it,without plywood. The plywood will and height to the floor. Since your in the kitchen first put plastic over subfloor for a moisture barrier, then the blue padding for noise reduction. I doubt if any coating would adhere to the laminate top.