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Alternative build ideas - Forno Bravo Forum: The Wood-Fired Oven Community


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Dome Installation Video - Casa / Premio / Modena


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Alternative build ideas

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  • Alternative build ideas

    There is a product called InsulCaste from the HeatStop people. Its purpose is to insulate but I can't vouch for its efficiency.

    It was suggested to me that I first apply a thin, watery coat of HeatStop over the exterior of my firebricks in order to fill in the low areas of mortar (I have many)

    Then, interesting I thought, to do away with the insulating blanket and use a 2 inch coating of the Insul Caste, following up with a stucco and a sealant coating.

    This is appealing to me because I could do away with the exterior wall and roof completely, and also do away with the ceramic blanket.

    Any thoughts?

  • #2
    Re: Alternative build ideas

    You pay your money and take your choice.

    You can surely take a chance with that advice....I'll take advice from someone who has been there and made a successful oven.

    Resist those shortcuts, and build it the way hundreds have done. Don't be taking a risk. All the details in the pompeii plans are there for a reason. A good reason.

    How much will it take to go back and redo things if that advice doesn't work? Are you willing to do it twice?

    I'm being a devil's advocate because likely that advice is from someone who has no idea why these ovens have been build this way for a thousand years....

    Lee B.
    DFW area, Texas, USA

    If you are thinking about building a brick oven, my advice is Here.
    Our One Meter Pompeii Oven album is here.
    An album showing our Thermal Breaks is Here.

    I try to learn from my mistakes, and from yours when you give me a heads up.


    • #3
      Re: Alternative build ideas

      I would be leery of a castable insulation merely for the fact that it's R-Value inherently cannot possibly be as high as a ceramic blanket. I would think anything castable would be very similar to vermicrete, which can be made quite easily and inexpensively.


      • #4
        Re: Alternative build ideas

        I have used the Insulcast for a door. It works well, but it is not in the same league as perlcrete at 6-1. It is designed as a product to insulate kilns, for example, not ovens.


        • #5
          Re: Alternative build ideas

          A 4 inch layer of pearlcreate or vermicrete (12:1) is going to do the same thing, be cheaper, possibly insulate better and you can put the stucco directly on to this as well.


          • #6
            Re: Alternative build ideas

            Yesterday I visited my friend's glass studio. He has a gas fired kiln that was at temp above 2000f, the top was only covered with 2 inches of ceramic cast, I placed my hand on it and it was as warm as my bath water. I decided that I will use the ceramic cast over my 42 inch Pompeii that is almost finished, covered with 3 ceramic blankets and 3 coats of stucco. I have my floor on 2 inches of ceramic boards. I'll let you know how it goes once I fire it up. Pompeii in Japan.