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Help needed lining a smoker with firebrick - 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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Help needed lining a smoker with firebrick

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  • Help needed lining a smoker with firebrick

    Greetings All,

    In addition to my 42" Pompeii build, my outdoor kitchen plans include a built-in rectangular smoker (54"lx33"wx38"h) that utilizes a removable round steel firebox.

    My initial plans call for a 2 1/2" steel-stud box frame with 1/2" cement board on either side and insulation (blanket?) inside. I would then mortar 9x4.5x1.25" 'splits' to the inside walls of the smoker.

    Question #1: Do you forsee any problems mortaring the firebrick splits (like tile) onto the cement board interior? I plan to use refractory mortar.

    Question #2: Will the concrete board (Hardibacker) hold up to temperatures up to 250degF?

    Question #3: Would it be smarter to build an internal wall of 2 1/2" firebrick and insulate accordingly outside? I understand it is not wise to stagger bricks layed in a vertical fashion. How would a sturdy wall be properly constructed?

    This whole exercise was born from my current smoker that is regularly too small and that leaks heat from it's thinnish metal walls. On a recent trip to the local county fair I saw a vendor who had lined his smoker with firebrick splits.

    All help/advise greatly appreciated!

    John

  • #2
    Re: Help needed lining a smoker with firebrick

    I lined an old fireplace with firebrick splits, the firebox was small to begin with, and I didn't want to loose much space. They were, however, mortared to a solid common brick structure with heat-stop, except where there were big gaps which I backfilled with ordinary mortar. It's held up well, but it's only been used with gas logs, so it's not subjected to raging flames. I don't know how splits would work stuck to masonry board.
    My geodesic oven project: part 1, part 2

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    • #3
      Re: Help needed lining a smoker with firebrick

      Thanks for the timely response, David. When construction time comes, if I'm not completely comfortable with using masonry board for the inside walls I will cast a 'low-temp' 1" wall using portland and fireclay and either mortar the splits to it or forgo the splits altogether.

      John

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      • #4
        Re: Help needed lining a smoker with firebrick

        John

        You can also check some of the pottery forums. They discuss building kilns and you may get some ideas from them.

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        • #5
          Re: Help needed lining a smoker with firebrick

          Thanks Neil. Good idea!

          John

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