For the hearth slab, do I pour regular concrete first then cap with the insulating concrete or insulating concrete then regular concrete?
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Structural or Insulating
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Re: Structural or Insulating
Welcome aboard Mojoe,
The structural layer is below (at the bottom), and the insulating layer (either SuperIsol or vermiculite concrete) sits on that. The oven in turn sits on the insulation, and you really only need insulation below the oven floor itself.
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Re: Structural or Insulating
From what I have read it is better to put the J bolts in the bottom layer.
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