I'm looking into putting an insert for my house. the fire place currently does not really have much of a hearth. all there are is some thine stone tiles. I say not much of a hearth because the tiles are just mortared straight to the wood flooring. this is a old house and the wood floor is the floor no plywood or anything under neath it. Also the base of the fire place is only 2 or so inches above the floor so I cant really put anything very thick down. I was thinking of putting down some 1/4" cement board, stone tile and then some sort of trim around the edge. any suggestions thanks in advance for any help