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Chimney questions - Forno Bravo Forum: The Wood-Fired Oven Community



New Forno Bravo Forum Feature

Forno Bravo Forum Community,

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.

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.

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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Chimney questions

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  • Chimney questions


    I am installing a casa 80 which will be covered above by an aluminum patio cover. Any suggestions on how to run the 6 inch stainless chimney stack? I would like to go straight through the cover but am unsure if heat from the stack would warp the patio cover over time. As it is, the top of the stainless stack if I did not extend it would be 3 feet from the top of the patio cover. The issue here is that the smoke may discolor the top of the patio cover. The other option is to run a few 60 degree angles and send the stack out the side of the patio cover so I would not have to cut a hole in it. Does angles in the stack decrease the efficiency of the draw into the oven? Any help would be greatly appreciated.


  • #2
    Re: Chimney questions

    30 degrees is the maximum recommended offset for chimneys, and code (and common sense) will not let you vent below the roof. You will want to get a flashed sleeve to run your pipe through the cover, and local code and layout will determine exactly how high it needs to be.


    • #3
      Re: Chimney questions

      local code and layout will determine exactly how high it needs to be.
      The general rule is two feet above anything within ten feet, so you most likely are going to be fine. I'd run the pipe through the roof: those wiggly layouts always look weird to me, and the angles aren't cheap either. The outside of the insulated chimney system, particularly near the top, don't get hot much at all. Some flashing and roofing cement and you should be good to go.
      My geodesic oven project: part 1, part 2


      • #4
        Re: Chimney questions

        You should have a double flue. If your ss flue pipe is 6" then the outer flue (which does not have to be stainless) should be 9" There are cowls that you can buy which will fit this double flue configuration ie. securing the two flue pipes in position at the top.
        Kindled with zeal and fired with passion.