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questions about perlite and vermiculite - 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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questions about perlite and vermiculite

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  • questions about perlite and vermiculite


    I am new to this forum and am building an oven in my backyard in ohio. the block stand is built but before I go any further i had a few questions about which type of insulation would be best for me.

    Does vermiculite expand and contract each time you use your oven?

    Can you put vermiculite or perlite up against the firebrick dome with no layer of insulfrax? Can they handle the direct exposure to high heat? What happens if you do????

    Is perlite ok to use in the insulating layer of the concrete hearth slab mixed with concrete???

    thanks for your help in advance : P

  • #2
    Re: questions about perlite and vermiculite

    Hi hoerath7

    I have recently completed my Pompeii and have tried to explain it's construction and details with photos commencing at:

    http://www.fornobravo.com/forum/f8/n...-1-a-2005.html (Neill's Pompeii #1)

    then continued with the build where the pics were supposed to be at:

    http://www.fornobravo.com/forum/f21/...-4-a-2045.html (Neillís Pompeii #4)

    and then again at:

    http://www.fornobravo.com/forum/f21/...10-a-2119.html (Neill's Pompeii #10)

    because one of my postings was moved.
    Instead of plastering the dome with vermiculite cement (I know they use the term concrete, but to me concrete has aggregate or gravel, sand and cement in it), you can construct an enclosure (fence or wall and a roof) and simply pour in the insulation. This has the advantage of being able to access the outside of the dome without major problems and patch-up or repair.
    All the answers to your questions are in my postings, so check them out. Send me an email if you have anything else that you wish to know about my construction if you feel it not applicable to this forum (for whatever reason).

    Prevention is better than cure, - do it right the first time!

    The more I learn, the more I realise how little I know

    Neillís Pompeiii #1
    Neillís kitchen underway


    • #3
      Re: questions about perlite and vermiculite

      thanks for your help neil

      I like that idea of pouring in loose vermiculite around the dome so I can access it if need be. I read through almost all of the links you gave me to other posts... it was a big help! If i run into any problems or anything specific I will shoot you an email!

      Your oven is beautiful. Very impressive to look through all the photos you posted!