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floor insulation - Forno Bravo Forum: The Wood-Fired Oven Community

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  • floor insulation

    does the vermiculite have to be mixed with concrete or can it be loose under the brick floor.Lay down the out line and fill with vermiculite add floor.

  • #2
    Re: floor insulation

    No, loose vermiculite won't work, it's fluffy, and will push right out of the way, or compress to uslessness if you tried. The portland makes it into a rigid layer under your oven floor which can't move or sag at the risk of cracking or worse.

    If you don't want to mess with the vermiculite concrete, use a refractory insulation board.
    My geodesic oven project: part 1, part 2

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    • #3
      Re: floor insulation

      so is this right 6 shoval fulls of vermiculite to 1 shoval full of portland cement then mix with water.and troll out.

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