Laminate Flooring....

The laminate over wood(plywood) with a layer of underlayment works well, gives a little cushion compared to glued down. No need for glue or silicone, the underlay creates a floating effect which is very noticeable at first but as the floor compresses, settles it becomes less notable. The floating will always have somewhat of a hollow sound but it feels great to walk on. Dont glue to the underlayment that will create all kinds of buckles and humps. Oh yeah, the finished product is only as good as the floor you lay it in so be sure to get all the old carpet pad up and bumps out.