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hearth insulation options - Forno Bravo Forum: The Wood-Fired Oven Community

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  • hearth insulation options

    Hi
    I am trying to construct a pizza oven in cambodia and have found it difficult to locate perlite or vermiculite. However in vietnam i came acrosss "perlitesand", Does anybody know what this is and how to use it? i have tried searching online but have had no joy.
    If i am unable to locate perlite is there any alternative to this? Could a heat blanket be placed under cement in the hearth or would this be unstable?
    There is also a liquid Cal silicate can this be mixed with cement for insulating properties?

    Thanks
    benkampot
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