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Vermiculite with no blanket

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  • Vermiculite with no blanket

    Hi, hope I don't get a collective groan but have searched and not found an answer.
    Can I skip using ceramic blanket and apply only vermiculite as an insulator on the exterior of the dome?
    Thanks in advance

  • #2
    Yes you can, but vermiculite cement is a much poorer insulator than the blanket. Of course, if you built a "house" for the dome, there's nothing stopping you filling the resulting cavity with vermiculite. That will work well, but vermiculite cement is a poor insulator.
    My 42" build: https://community.fornobravo.com/for...ld-new-zealand
    My oven drawings: My oven drawings - Forno Bravo Forum: The Wood-Fired Oven Community

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    • #3
      Ok, thank you, appreciate it.

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      • #4
        Has anyone seen or experienced any cracking in the outer render as a result of not having the blanket as expansion joint between the dome and perlite/vermiculite concrete?

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        • #5
          Originally posted by Petter View Post
          Has anyone seen or experienced any cracking in the outer render as a result of not having the blanket as expansion joint between the dome and perlite/vermiculite concrete?
          Yes, two friends of mine built such an oven and the outer render has cracked badly.
          My 42" build: https://community.fornobravo.com/for...ld-new-zealand
          My oven drawings: My oven drawings - Forno Bravo Forum: The Wood-Fired Oven Community

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          • #6
            Great info, Thanks a lot!

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