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Found a Few Loose Bricks in My Hearth - Forno Bravo Forum: The Wood-Fired Oven Community

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Found a Few Loose Bricks in My Hearth

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  • Found a Few Loose Bricks in My Hearth

    I noticed that my hearth has a few loos firebricks in it. Loose in that I can remove it if I wanted to. The hearth is now surrounded by vermiculite/concrete (5:1) and everything is level. Should I not mind the loose bricks?

    I mean, it won't one day pop out, run a route out of my oven and smack me in the head, will it?
    Journal of My Oven's Progress

  • #2
    Re: Found a Few Loose Bricks in My Hearth

    Loose as in I have a 1/4" space between bricks and this thing is going to move every time it is touched - - which would be a problem.

    OR

    I don't have anything adhering the brick to whatever is under it, it moves if I try to move it, but it is snuggly positioned between the surrounding bricks - -which would be how many folk install their floor, so that if there ever is a problem with the brick it can be replaced.
    Jim

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    • #3
      Re: Found a Few Loose Bricks in My Hearth

      Jim, thanks for the reply. If I wanted to pull it out, I would have to use something sharp to wrestle it out. Everything is snug and evenly layered with the vermiculite.

      The main reason I ask is I had a guy who works in masonry come have a look at what I'm doing. I mainly wanted to see if he would help build the arches for the dome. He said I needed to lay the mortar again for the firebrick before I do anything else. His thought was that, while it's level, it's not secure.

      Do some not even use mortar?

      Thanks again for replying.
      Journal of My Oven's Progress

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      • #4
        Re: Found a Few Loose Bricks in My Hearth

        No no no! Don't mortar your floor. The mason is wrong. Those few cracks will fill up with wood ash, and be perfectly sound. I was worried in my oven because the floor would creak and rock slightly while I was standing on it to lay bricks, but in use the floor never shifts, and if I should ever need to replace a cracked or broken brick I could pull it right out.

        This is one of the problems with getting masons to build brick ovens. They come in with all sorts of preconceived notions which are plain wrong.
        My geodesic oven project: part 1, part 2

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        • #5
          Re: Found a Few Loose Bricks in My Hearth

          Originally posted by dmun View Post

          This is one of the problems with getting masons to build brick ovens. They come in with all sorts of preconceived notions which are plain wrong.
          You are very right. He referred to it as a "short-cut." That got under my skin and my inner voice shouted, "No pizza for you!"
          Journal of My Oven's Progress

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          • #6
            Re: Found a Few Loose Bricks in My Hearth

            (inner voice)

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            • #7
              Re: Found a Few Loose Bricks in My Hearth

              Maybe the brick will pop out, run round the oven and smack him on the head...?
              "Building a Brick oven is the most fun anyone can have by themselves." (Terry Pratchett... slightly amended)

              http://www.fornobravo.com/forum/f8/p...pics-2610.html
              http://www.fornobravo.com/forum/f9/p...nues-2991.html

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