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Insulation - top down or bottom up? - 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.
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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 - top down or bottom up?

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  • Insulation - top down or bottom up?

    I have placed my blanket oven my dome and put the chicken wire in place. I have heard that the vermiculite concrete insulation is hard to apply and was wondering if i am better starting at the top and working down or start at the bottom and work up?

    Any thoughts?

    Cheers
    Jase

  • #2
    Re: Insulation - top down or bottom up?

    I wouldn't have been able to do it top down- I think you'll have to go bottom up. Just do it like a sand castle- wear gloves and pack it with your hands in layers going up. See my thread and you'll see the layers in the vermiculite!
    Elizabeth

    http://www.fornobravo.com/forum/f8/e...html#post41545

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    • #3
      Re: Insulation - top down or bottom up?

      Elizabeth is correct, I think it would be darned near impossible to go top down. It really doesn't like to stay in place; the chicken wire helps give it a bit of hold and working up gives you a base for each handful you slap on.

      RT

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      • #4
        Re: Insulation - top down or bottom up?

        Jase,

        I did my vermiculite insulation "bottom-up" with a slight variation to avoid troweling on that weird stuff.

        I put some hardware cloth loosely around the dome (to provide added support for the vermic) then I built a crude form around the structure with foam board (from Office Depot) and duct tape. Then I poured the mixture in the form and gently tamped it down.

        After a few days it set up very nicely. I did a couple of test fires and the board never got warm, so I left it there.

        Here are the pics from my construction thread

        NEW URL:
        http://www.fornobravo.com/community/forum/good-background-information/brick-oven-photos/2441-my-old-kentucky-dome
        Last edited by fbfireoven; 10-21-2015, 10:19 AM. Reason: Updated URL
        Ken H. - Kentucky
        42" Pompeii

        Pompeii Oven Construction Video Updated!

        Oven Thread ... Enclosure Thread
        Cost Spreadsheet ... Picasa Web Album

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        • #5
          Re: Insulation - top down or bottom up?

          Ditto - bottom up!

          Les...
          Check out my pictures here:
          http://www.fornobravo.com/forum/f8/les-build-4207.html

          If at first you don't succeed... Skydiving isn't for you.

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          • #6
            Re: Insulation - top down or bottom up?

            Yep, bottom up is the only way to go. That is horrible stuff to try and keep in place. Got about 1/3 of it done last night and it seems to have dried ok this morning. I reckon that has got to be one of the least fun jobs of building a WFO?

            Thanks guys.

            Jase

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