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expansion joint? - Forno Bravo Forum: The Wood-Fired Oven Community



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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expansion joint?

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  • expansion joint?


    I've seen some examples (can't remember where!) of a gap between the inner dome and the cosmetic brick work. It sounds logical to have one I suppose.

    Has anyone used one? what did you plug the gap with?

    Any hints-tips will be appreciated


  • #2
    Re: expansion joint?

    I think I understand your question.
    Insulation goes on the outside of your oven bricks, then the cosmetic brick work. Lots of insulation. Then you can have a gap or not. I don't think it matters. The builders who used stucco to finish the top of the oven used no gap.
    Hope this helps.



    • #3
      Re: expansion joint?

      Thanks for the reply ... maybe I should have explained my query better

      I mean where the hearth and the chimney work meets the outer/cosmetic brickwork



      • #4
        Re: expansion joint?


        I didn't use one, but when you mortar the brick, you almost get one by default. The mortar isn't going to be solid between the two bricks. I did separate the brick from the flue about two inches and filled the gap with vermiculite/portland for insulation.

        Check out my pictures here:

        If at first you don't succeed... Skydiving isn't for you.


        • #5
          Re: expansion joint?

          I just put a piece of foil to create a slip joint there. You could use the flat stove door gasket material if you wanted to get fancy. There's also a quarter inch version of the insulating blanket, but I'm sure you'd have to buy the whole roll.
          My geodesic oven project: part 1, part 2