Author Topic: Concrete dome  (Read 1256 times)

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Offline stonecutter

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  • Location: SC
    • Old World Stone & Garden
Re: Concrete dome
« Reply #20 on: November 13, 2013, 04:48:50 PM »

Just a question regarding my idea of putting an extra layer of bricks below the dome, would this also create a insulating factor? Or does it need special material as heart insulator?

I am asking just to understand if I could fix the grout and heart insulation problem with this idea.

I feel similar to Tscar that this oven doesn't seem to have insulation under the floor. If that is the case, then you need not worry about the mortar joints.

If you buy this oven, then one  solution would be to remove the existing mortared floor brick, insulate with perlite/concrete, ceramic or mineral wool board then use low duty firebrick splits (usually 4"x9"x1.25").....this is all based on the assumption you can remove enough material to add insulation in the first place.

Look at a stone cutter hammering away at his rock, perhaps a hundred times without as much as a crack showing in it. Yet at the hundred-and-first blow it will split in two, and I know it was not the last blow that did it, but all that had gone before.
Jacob August Riis