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Door of Insulating Firebrick

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  • Door of Insulating Firebrick

    I had the thought to make an oven door out of insulating firebrick.

    I picked some up from a local ceramics store; they weigh about 2 lbs. each and have a consistency closer to styrofoam than to normal firebrick.

    The ceramics store said these bricks lining a kiln would take a 2,300F internal temp and take it down to 600F to the outside of the kiln.

    I propose to mortar them together, cut to an arched shape, and through-bolt a wooden handle.

    Total cost: ~$25.00
    Weight: ~10 lbs.
    -David

  • #2
    Re: Door of Insulating Firebrick

    They can be a little crumbly, I think your plan will work, with a good quality refractory mortar, but they may leave some brick dust on your hearth. It'll also be a little brittle. When they do lids for kilns, they are always held by some metal edging.
    My geodesic oven project: part 1, part 2

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    • #3
      Re: Door of Insulating Firebrick

      Thanks for the input. You are right about those bricks being crumbly; you can scratch them with a fingernail. I thought of sandwiching the door with sheet metal as some have done with ceramic board. It was to avoid the dust from ceramic boards that led me to this design; I think I would rather deal with brick dust.

      -David
      -David

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      • #4
        Re: Door of Insulating Firebrick

        made my doot from a piece of soapstone
        works great takes the heat very goo

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