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refractory concrete hearth? - Forno Bravo Forum: The Wood-Fired Oven Community

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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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refractory concrete hearth?

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  • refractory concrete hearth?

    Hi guys,

    I'm part way through a build, refining the design as I go. For a bunch of reasons to do with limited space and a liking for the small and efficient over the big and meaty, I'm going for a cast refractory concrete dome, 33"ish diameter, and 2"ish thick. I know this is a lot thinner than the standard half brick, so there will be less thermal mass - that's a good thing as far as quick heat-up goes, but I know I need to be very careful on the insulation to try to keep the heat in. I also know there has to be a much higher chance of it collapsing than a brick dome - that's a risk I'm prepared to take ;-)

    Anyway, my real question is about the hearth. With a thinner than usual dome, a thinner than usual hearth seems pretty sensible. So I'm thinking 2" or a touch less. I'll have a bunch of refractory concrete available, and I'm wondering if anyone has used that for a hearth, or has any good thoughts about whether it will be a good thing or a bad thing. I've seem quite a few refractory concrete domes now, but no hearths - is there a good reason why which I'm missing?

    I know you can get thinner firebricks, and I know they are well proven, so they are obviously an option. But I don't mind experimenting and being the fall-guy for something new - unless someone knows a good reason not to!


    Dave.
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