So, I'm building a 20-28 sqft hearth for a wood stove we are installing in our basement. The basement floor is currently wall to wall carpet over the concrete slab/foundation. I am planning on using 12"x12" absolute black granite tile for the job. The questions come when I try and figure out how to do it exactly. I would like to have the hearth sit up above the carpet when complete. After I cut away the carpet I need to put something in between the concrete and the tile that is about 1/2" thick and heat resistant. I want to keep it as simple and durable as possible. I'm a total amateur so I'll take any advice on the WHOLE job anyone is willing to help me out with. Thanks in advance.