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Hearth design - Forno Bravo Forum: The Wood-Fired Oven Community



I'm Peter Reinhart! Ask Me Anything! Monday, February 15, 2016 7:00-8:00 pm EST

To kick off our AMA feature, we have invited author, chef and master bread maker and host of Pizza Quest, Peter Reinhart, to be our first host! Peter will be in the Forum on Monday, February 15th, from 7:00 - 8:00 pm EST. If you are unable to be online during the live session, you can post your questions in the sticky post. Peter will answer those questions during the live session on February 15th. You can view Peter's answers to your questions as well as what happened during the live session in the session thread.

Ask Me Anything New Forum Feature

You will notice a new forum at the top of the main page called, "Ask Me Anything". This forum will be used for live one hour "Ask Me Anything" (AMA) sessions hosted by people who are knowledgeable in different areas pertaining to wood fired ovens. How it works:
- Each AMA will have a "sticky" thread where the community can post questions they would like answered during the live session. This will allow everyone to participate even if you can't be online for the live session. These questions will not be answered by the host until the live AMA; if you need an answer quickly, you should post it in the appropriate Forum area for the community to respond.
- Another thread will be posted for the live AMA. Registered users who are logged in during the live session can interact with the host by asking questions and receiving responses.
- The live thread will remain in the AMA forum to view after the session.

We hope you enjoy this new feature! Please let us know if there is a topic that you'd like to have as an AMA and we'll look for a host!

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Hearth design

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  • Hearth design

    I see that most builders use the '2 part' system to build identical hearth slabs- one reiforced concreate, the next on top the insulated slab made with pearlite. Question- not everyone makes identical slabs- some only insulate a portion of the top slab- is there any advantage to this 'extra' step?


  • #2
    Re: Hearth design

    Hi Moutainside,

    As long as you have 4" of vermiculite/portland (or 2" of insulation board) under the oven floor and oven walls, you are ready to go.

    You can skin that cat any way you like
    Ken H. - Kentucky
    42" Pompeii

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    • #3
      Re: Hearth design


      I too wondered about that. I did not want to go to the trouble of extra form building so I laid a full layer of the insulating layer save for the cantilevered shelf I put in front, that I did make with a double layer of reinforced concrete.


      • #4
        Re: Hearth design

        The reason most of us go to the effort of only insulating a portion of the top slab is that the vermiculite/cement insulation is kind of brittle, so we pour regular concrete around the insulating portion to protect the insulation from chipping off. And we can attach steel studs, etc. to it.