i see most of the floor protection call for adding steel over the plywood, than metal, ETC. heres my question i have new carpet in my house and i am adding a woodstove to the room i want to build a "platform" to put the stove on that would meet the floor preotection requirements without removing my carpet. my idea is basically copying this floor pad( see attachment picture at bottom of post) i want to make a plywood base say 48x48, put 28 guage steel on it, then a chunk of protective board, then lay 12"x12" marble tile ontop of that. would this be "legal"???? i cant see why it wouldnt be as i would be doing the same thing as if it was on the bare plywood floor but now its just ontop of the carpet with all this stuff instead??