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Duraboard vs FB Board - Forno Bravo Forum: The Wood-Fired Oven Community



New Forno Bravo Forum Feature

Forno Bravo Forum Community,

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.

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.

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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Duraboard vs FB Board

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  • Duraboard vs FB Board

    Has anyone used or what are your thoughts on Duraboard which is rated for 1900 degrees in place of FB Board as your insulation beneath the firebrick?

  • #2
    Re: Duraboard vs FB Board

    Duraboard LD is a high quality ceramic fiber board made in the USA. Should work well in this application.


    • #3
      Re: Duraboard vs FB Board

      Duraboard is way to soft. Better to use Calcium Silicate board. Duraboard doesnt like moisture at all, but Cal Sil dries out fine.
      I would not recommend fibre board at all.Duraboard is rated to 1260C.


      • #4
        Re: Duraboard vs FB Board

        Why do we need the fb board? If we have a double layer of brick are we ok without fb board? Or if fire brick on the edge is that enough insulation?


        • #5
          Re: Duraboard vs FB Board

          Brick is not insulative at all, except for insulation bricks. A standard fire brick is dense. The insulation board acts as a barrier to stop heat "wicking: from the oven itself.


          • #6
            Re: Duraboard vs FB Board

            Johnny is correct. Bricks are thermal mass. Insulation is, uhmm, insulation. The goal is to keep as much heat as possible IN the oven (not letting the heat escape). After the bricks heat up, the insulation surrounding the bricks keep the heat (energy) contained in the oven.

            Without insulation under your floor, the heat leaks out of the floor into your concrete hearth and will keep your wood storage toasty warm - and cause you to use a HUGE amount of wood to heat up your oven.

            Think about your home. Did the building contractor use bricks or some other solid building material to keep the heat in your house? Nope. He used material with insulating properties - pink rolls of fiberglass, fluffy blown stuff, styrofoam panels, etc. Same goes for your oven. Use the proper insulation ALL AROUND your oven - top, bottom and sides for a SUPER EFFICIENT oven that heats up quickly and MAINTAINS it's heat for days after your fire.
            Ken H. - Kentucky
            42" Pompeii

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