I've finally started a build that i've been waiting months to do. I'm tearing out my old pre-fab fireplace, and putting a new hearth and wood stove in it's place. I'm going to build a six inch raised hearth pad for the stove, taking into account the clearances for the stove. My only problem is I am not fully understanding the requirements for the floor protection needed for this stove. I was going to use one inch thick hearth stone over a half inch of cement backer board, but I can't figure out if that will be sufficient. Can anybody help? Here are a few pictures of the progress so far.