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Duravent chimney question - Forno Bravo Forum: The Wood-Fired Oven Community

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Duravent chimney question

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  • Duravent chimney question

    I've noticed different ways of installing duravent chimneys in combination with a stucco finish. Mostly, they seem to cover the chimney, at least a bit.

    My neighbor is a retired fireman, who says I shouldn't stucco the chimney in place, but instead leave the base accessible for future removal. He says he's seen several of the double wall chimneys burn out over the years, requiring that they be replaced.

    Personally, I'd like to bury it in an inch or so of stucco at the anchor plate to make a smoother stucco transition from the top of the dome to the entryway.
    Now I'm thinking about coating it with vaseline, oil, or some other separating medium to prevent the stucco from sticking to it.

    Anyone have recommendations on this issue?

    Many thanks!
    George
    GJBingham
    -----------------------------------
    Everyone makes mistakes. The trick is to make mistakes when nobody is looking.

    -

  • #2
    Re: Duravent chimney question

    Originally posted by gjbingham View Post
    I've noticed different ways of installing duravent chimneys in combination with a stucco finish. Mostly, they seem to cover the chimney, at least a bit.

    My neighbor is a retired fireman, who says I shouldn't stucco the chimney in place, but instead leave the base accessible for future removal. He says he's seen several of the double wall chimneys burn out over the years, requiring that they be replaced.

    Personally, I'd like to bury it in an inch or so of stucco at the anchor plate to make a smoother stucco transition from the top of the dome to the entryway.
    Now I'm thinking about coating it with vaseline, oil, or some other separating medium to prevent the stucco from sticking to it.

    Anyone have recommendations on this issue?

    Many thanks!
    George
    I'd bury it George. I'm going to do the same thing. ( I should have more time and MONEY now that the Holidays have passed.)

    It's not like your going to be firing it every day.

    I think it will last for years.

    But that is just my opinion.

    How's everything else going?
    My thread:
    http://www.fornobravo.com/forum/f8/d...ress-2476.html
    My costs:
    http://spreadsheets.google.com/pub?k...Xr0fvgxuh4s7Hw
    My pics:
    http://picasaweb.google.com/dawatsonator

    Comment


    • #3
      Re: Duravent chimney question

      Everything is going great! Thanks for asking.

      That's a great observation regarding the comparative low use of the oven. You're probably correct that it will last a long, long time......

      Still, I think I'm going to wrap the chimney in plastic wrap then place the base coat of stucco, then once it has set, remove the chimney and plastic wrap, and replace the chimney. I'll do the finish coat of stucco directly against the chimney, which should be easy to break out and repair if I do ever need to remove the chimney.

      Thanks for your help.
      G.
      GJBingham
      -----------------------------------
      Everyone makes mistakes. The trick is to make mistakes when nobody is looking.

      -

      Comment


      • #4
        Re: Duravent chimney question

        BTW.

        I am going to run chicken wire around mine, then mortar, and then the stucco finish.

        I think this will help improve draw....

        I think a little mass will help to keep the chimney heated up.
        Mine is just 18 gauge steel, single walled, so it heats quickly, but cools quickly too. So when the fire burns down, the smoke likes to hit me right in the kisser.

        Anyways..
        If the metal corrodes and rusts, then I guess the mortar becomes the chimney.
        Or maybe the old one will come out in pieces, and a new one slid into place.

        my 2 pennies

        dave
        My thread:
        http://www.fornobravo.com/forum/f8/d...ress-2476.html
        My costs:
        http://spreadsheets.google.com/pub?k...Xr0fvgxuh4s7Hw
        My pics:
        http://picasaweb.google.com/dawatsonator

        Comment


        • #5
          Re: Duravent chimney question

          Sounds reasonable. I figure we built 'em, we can always fix 'em.
          G.
          GJBingham
          -----------------------------------
          Everyone makes mistakes. The trick is to make mistakes when nobody is looking.

          -

          Comment


          • #6
            Re: Duravent chimney question

            Originally posted by asudavew View Post
            If the metal corrodes and rusts, then I guess the mortar becomes the chimney.
            That is my thought exactly. If, years from now when we are REALLY old, and the transition thing corrodes, the 1" of stucco will be the chimney. And if you still think you want to replace it, it won't much matter that it is wrapped in plastic or vacoline because it will be disintegrated anyway.
            I say cover it with stucco...the more the better. But I'm just thinkin'. No real knowledge on the subject.

            dusty

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            • #7
              Re: Duravent chimney question

              Dusty, I'm full of partial truths and no real knowledge. I value your opinion. I've seen your work. Thanks for the reassurance.
              G.
              GJBingham
              -----------------------------------
              Everyone makes mistakes. The trick is to make mistakes when nobody is looking.

              -

              Comment

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