So,,, the floor of my firebox is 5" lower than my hearth.. previous owner installed a surround with a raised front...my question is : can I get by (just this season) with placing regular bricks as a new floor, covered with 1-1/4" firebrick ontop of them as a "barrier". We will have a mason come and correct the issue in the summer when the Money Tree Blooms. Any help is appreciated