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Igloo design refinement - Forno Bravo Forum: The Wood-Fired Oven Community

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I'm Peter Reinhart! Ask Me Anything! Monday, February 15, 2016 7:00-8:00 pm EST

To kick off our AMA feature, we have invited author, chef and master bread maker and host of Pizza Quest, Peter Reinhart, to be our first host! Peter will be in the Forum on Monday, February 15th, from 7:00 - 8:00 pm EST. If you are unable to be online during the live session, you can post your questions in the sticky post. Peter will answer those questions during the live session on February 15th. You can view Peter's answers to your questions as well as what happened during the live session in the session thread.

Ask Me Anything New Forum Feature

You will notice a new forum at the top of the main page called, "Ask Me Anything". This forum will be used for live one hour "Ask Me Anything" (AMA) sessions hosted by people who are knowledgeable in different areas pertaining to wood fired ovens. How it works:
- Each AMA will have a "sticky" thread where the community can post questions they would like answered during the live session. This will allow everyone to participate even if you can't be online for the live session. These questions will not be answered by the host until the live AMA; if you need an answer quickly, you should post it in the appropriate Forum area for the community to respond.
- Another thread will be posted for the live AMA. Registered users who are logged in during the live session can interact with the host by asking questions and receiving responses.
- The live thread will remain in the AMA forum to view after the session.

We hope you enjoy this new feature! Please let us know if there is a topic that you'd like to have as an AMA and we'll look for a host!

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Igloo design refinement

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  • Igloo design refinement

    We have made a few ovens hand cast over sand and the latest is one we made by using large and medium size dog igloo house ,one suspended inside the other upside down forming a 3" cavity, and pouring castable refractory cement into it. We did it in two parts so it was reasonably manageable to handle. So far so good and now we want to apply insulating layer and stucco. Any suggestions about what to use for each of these processes ? Do we need to use lath before we do a brown coat ? What should we use as a mortar between the two parts or do we even need it ? Each piece is very heavy and not likely to go anywhere and I am wondering if using mortar will make it more or less likely to crack. Any input would be appreciated

  • #2
    Re: Igloo design refinement

    Part of the reason for creating sections is to create cracks where you want them to allow for uneven heat stresses to be accommodated. Most modular ovens suggest mortar only on the outside, to prevent any bits falling into the food. Mortar squished into the joins from the outside and a layer sitting proud of the surface is usually the go. You could use the homebrew recipe or, if you have plenty of castable left, you can sift out the course aggregate and use the resulting mixture as a mortar.The other reason for making it in sections is of course to be able to handle them more easily. They are heavy.
    Most people use an insulating blanket, then some vermiculite or perlite concrete, then the stucco.
    Last edited by david s; 08-12-2011, 01:56 PM.
    Kindled with zeal and fired with passion.

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