I'm looking to pick up a piece of 1 1/2", 4 x 3ft. bluestone to use as a hearth pad. It cost $120 and I will have them make 2 cuts to make it look all pretty. My questions is if I can get a relatively flat piece on the side that the pellet stove will sit on, what should I put on the bottom of it? It is going on hardwood floors. Should I lay a piece of cement board on the bottom and then mud it and put the bluestone on top? I will need to trim it. I picked up a Lopi Leydon that was used for 3 years for $1500 and they threw in a corner hearth pad...which I can't use and I should be able to sell on cg for $250 and 25 bags of pellets and some of the piping. I thought it was an awesome deal. However, the stove weighs 375lbs. With the pellets in it and the bluestone, it should come to around 650 lbs. One of my contractors said the weight would be fine. I feel like getting the bluestone and mudding the cement board would be easier than tiling and look really nice. Any thoughts about what I rambled on about?