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Insulation question. - 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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Insulation question.

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  • Insulation question.

    I want to stone veneer right against my refractory dome over the whole oven.
    Is it ok to not use an insulation blanket or vermiculite?

    What are the pros and cons of not using a insulation blanket?

    Thanks Stonemason1

  • #2
    Re: Insulation question.

    If you don't insulate over your refractory dome, the stone veneer will be part of the thermal mass, and all the exposed stone will eventually come up to cooking temperature (if you're lucky) or not (if unlucky). Potentially dangerous, either way!


    • #3
      Re: Insulation question.

      That doesn't sound like a good idea.

      1. Stone veneer is not designed for high temperature, let alone thermal cycling. If you use manufactured "cultured stone" as your veneer, you will likely find that breaking down and eventually crumbling. Firebrick is designed to handle the very high heat.

      2. The outside of your oven will get REALLY hot! (Ive had my oven to 1100 degrees!)

      3. You have a huge thermal gradient. Inside wall of the oven 1000 deg....outside wall - air temperature. That difference puts tremendous stress on the brick.

      I used stone veneer on my oven, but I built a structure around the oven itself with gabled roof. I used metal studs and cement board. I had 4" of thermal blanket covering the oven dome itself.


      • #4
        Re: Insulation question.

        does there need to be an airspace between the concrete (or refractory) and the insulation blanket? I have heard/seen both.