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hearth Insulation question - 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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Dome Installation Video - Casa / Premio / Modena


For many of you who bought a modular oven, you may have asked how we put the domes together when we build them. For those of you considering one of our ovens, we shot a video to make your install easier.

Check it out on our You Tube Channel.


If the link doesn't work, simply go to You Tube and type Forno Bravo Channel. The video title is How to Set your Forno Bravo Oven Dome Pieces.

Thanks for participating in our Forum. We will have more video content available soon.
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hearth Insulation question

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  • hearth Insulation question

    have built an oven and floor out of refractory castable (See my other posts). I wish to mount this oven onto a trailer, I'd like to know would there be any problems if I were to sit the oven directly onto a sheet of plywood and placed rigid urethane insulation (3") Under the plywood for ease of mounting or would the insulation need to go directly under the hearth (The floor is 3" deep. Thank YOU

  • #2
    Re: hearth Insulation question

    I don't think you want anything combustible next to your oven floor. That would rule out both plywood and urethane.
    My geodesic oven project: part 1, part 2


    • #3
      Re: hearth Insulation question

      The product I wish to use is called Kingspan here in the UK. I guess you have similar products abroad. It is a rigid foam with a silver paper outside. I used it before on an other oven and it worked very well. What do you suggest as a hearth insulator?


      • #4
        Re: hearth Insulation question

        Kingspan is a phenolic foam. It is only good to about 300f for continuous use. I'm in the middle of being certified on their products as we speak.


        • #5
          Re: hearth Insulation question

          There are lots of non-combustible choices. If you want a rigid foam, There are multiple mineral fiber choices, as well as the more expensive calcium silicate. These are both refractory products. If cost is an object, perlite or vermiculite can be mixed with portland cement. Builders have also used foamglass, an expanded glass block, or
          Autoclaved Aerated Concrete aka Hebel Block, although there have been some problems with brittleness reported with this.

          There's no reason to use things that are going to outgas fumes or smoke in your build.
          My geodesic oven project: part 1, part 2


          • #6
            Re: hearth Insulation question

            Originally posted by shuboyje View Post
            Kingspan is a phenolic foam. It is only good to about 300f for continuous use. I'm in the middle of being certified on their products as we speak.
            Kingspan is the number one insulation panel product used here in the UK, It is actually shipped here from Ireland and costs a fortune to buy, However as I am in the construction industry I have been hoarding leftovers. Shame i can't utilize it to be used in my oven. Thanks all for your help