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Pouring the Hearth - Forno Bravo Forum: The Wood-Fired Oven Community



New Forno Bravo Forum Feature

Forno Bravo Forum Community,

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.

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.

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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Pouring the Hearth

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  • Pouring the Hearth


    I would like the experts opinion about the following question:

    In section 4 of the instructions for Pompeii oven, 2 alternatives are provided:
    1) Using FB board, or alternatively,
    2) using insulating concrete (cement plus vermiculite).

    I have seen a 3rd option in books about earth ovens (using empty bottles plus perlite and clay slip).

    What do you think?
    Is there any discussion of this or other techniques in this forum?


  • #2
    Re: Pouring the Hearth

    1) Use FB board, or alternatively,
    2) use insulating concrete (cement plus vermiculite/perlite)


    • #3
      Re: Pouring the Hearth

      Thanks for your reply, but I was trying to get some opinions on option 3 (bottles plus perlite and clay slip).


      • #4
        Re: Pouring the Hearth

        Glass, broken or in bottle form is not an insulator. Clay isn't either. Neither is sand, or gravel, or broken masonry, or rock salt.

        We aren't living in the middle ages. We have access to modern materials, and we should use them. The cost of insulation is small compared to the cords of firewood you would have to burn to heat up an uninsulated oven.
        My geodesic oven project: part 1, part 2