Concerned About Rebar in Insulated Layer

[DaveDQ]

Re: Concerned About Rebar in Insulated Layer

I laid my hearth today and went with laying the bricks flat. These bricks were given to me, so I didn't have 114 to use. I used about half of that amount laying them flat.

[DrakeRemoray]

Re: Concerned About Rebar in Insulated Layer

DaveDQ, I think you will be happy with that decision.

roobgn, The bricks act as mass, not insulation. The vermiculite concrete does not have heat retaining properties except that it acts as a barrier (insulation) to keep heat from escaping...The firebrick (or other mass like refractory cement) will retain heat.

Drake