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Advice on Laying (circular?) insulating hearth - 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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Advice on Laying (circular?) insulating hearth

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  • Advice on Laying (circular?) insulating hearth

    Hi Everyone,

    I'm a newbie and just starting to build a 42'' tuscan pompeii. I've built a stand and laid 100mm (3.5inches) suspended concrete slab for the base of the hearth - now dry. There's no easily available insulating board in my region that I'm aware of (Canberra, Australia), so I'm laying a castable vermiculite/cement insulating base to sit the oven floor and dome on. The FB Plans say to lay the insulating base ontop of the concrete hearth in a rectangular fashion right to the edge of the concrete slab. My question for all you knowledgable folks out there is this:

    Can you see any issues with simply laying a circular layer of vermiculite/cement insulation ontop my concrete slab hearth, just a fraction larger than the floor of the oven? I'd then lay the floor and dome ontop of that, and aim to bring the dome insulation and stucco down flush with the edge of the circular hearth insulation. I figure this would save a little bit of vermiculite, and result in a nice neat finish.

    Any other tips at this stage gladly received! I'll post some pics as I go.



  • #2
    Re: Advice on Laying (circular?) insulating hearth

    So I did that. And here's the result so far. I reckon it's gunna work quite nicely.

    Rest of my build is in the Aus regional forum.


    • #3
      Re: Advice on Laying (circular?) insulating hearth

      Allow at least two weeks sun and wind on the vermicrete slab to eliminate water before building over it. Cover the thing if it looks like rain.
      Kindled with zeal and fired with passion.