Hi everyone, I am building a hearth for my pellet stove. I was considering using ceramic tiles for surface that the stove sits on but thought maybe I might use a sheet of copper. I will shape it to a wood frame, tuck over sides and secure with brass nails. Do you think the copper will work as a surface to rest the stove on?? It's an Englander pellet stove that sits on a pedestal. Also should I use something like a sheet of 5/8 firex under the copper?