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Hearth insulation with brick? - Forno Bravo Forum: The Wood-Fired Oven Community

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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 insulation with brick?

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  • Hearth insulation with brick?

    O.K. I understand the importance of hearth insulation. Actually I understand the importance of insulation all around the oven! INSULATE, INSULATE, INSULATE, INSULATE!

    See.... I have been doing my homework. But I have a question.

    I used to do pottery. (Which I've been meaning to get back to..) and during the firing of pots the kiln would reach temps of about 2300 degrees, more or less. The firing took place in a brick kiln. Now in this kiln there were a few "peepholes." To plug these peep holes during firing a piece of a high-refractory brick was used. When I wanted to take a peek I just pulled it out. The cool thing was I could use an unprotected hand to do it. So one side of the brick was 2000 degrees or more, but the other was cool as a cucumber.

    So my question is, wouldn't the same type of bricks make a heck of a good insulating hearth compared to perlite/concrete?

    Could I not embed the bricks in the hearth for better insulating qualities?


    Thanks in advance for the input!
    My thread:
    http://www.fornobravo.com/forum/f8/d...ress-2476.html
    My costs:
    http://spreadsheets.google.com/pub?k...Xr0fvgxuh4s7Hw
    My pics:
    http://picasaweb.google.com/dawatsonator

  • #2
    Re: Hearth insulation with brick?

    Originally posted by asudavew View Post
    So one side of the brick was 2000 degrees or more, but the other was cool as a cucumber.

    So my question is, wouldn't the same type of bricks make a heck of a good insulating hearth compared to perlite/concrete?

    Could I not embed the bricks in the hearth for better insulating qualities?


    Thanks in advance for the input!

    That sounds like the perfect description of an insulator. A very good insulator, so yes.
    Wade Lively

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    • #3
      Re: Hearth insulation with brick?

      Those insulating bricks may be more expensive and harder to find than the perlite or the cal-sil boards...
      My Oven Thread:
      http://www.fornobravo.com/forum/f8/d...-oven-633.html

      Comment


      • #4
        Re: Hearth insulation with brick?

        I think you'll find that insulating brick has about the same insulation value as vermiculite concrete, so you would have to do two layers under the cooking floor (or one layer on edge) to get the same insulation as two inches of cal-sil.
        My geodesic oven project: part 1, part 2

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