Hi, I have a situation where there are tiles installed in the hallway/ kitchen, which we are not changing for now (might do in a year or two) and there are some adjoining rooms which are carpeted but the carpet sits about 0.5inch or so lower than the tiled areas, so there is an annoying mini-step between rooms. We're planning to put floating floors/ boards in the adjoining rooms, but my guess is they might not come up to be level with the tiles. I want to get rid of the 'mini-step' between rooms - is it possible/ practical to put a layer of thin plywood/ similar before laying the new floor, to bring things up level with the tiles? If so how do i figure out how thick it should be? Hope I have explained what I mean.... thanks