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Sealing between stucco and flue pipe - 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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Sealing between stucco and flue pipe

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  • Sealing between stucco and flue pipe

    G"day all has anyone got a idea what to use to seal out the rain from the
    gap between stucco and flue pipe .I think it will need some sort of high temp silicone or some thing? any ideas
    thanks Peter

  • #2
    Re: Sealing between stucco and flue pipe

    I used a high temp silicone sealant I purchased from an auto parts store. The stuff I used claims to be able to withstand up to 700 degrees F. The exact product I used is made by Permatex for Napa and is called "Ultra Copper High Temp RTV Silicone" and has a part number 765-1135. That's a 3 oz tube although it is available in 10 oz regular caulking gun type tubes. It is a red copper color.


    • #3
      Re: Sealing between stucco and flue pipe

      Thanks Wiley ive seen this stuff at the auto parts place here in melbourne.

      Cheers Peter


      • #4
        Re: Sealing between stucco and flue pipe

        In Australia try sikafirate or thermoseal. This is a problem area where flue meets outer shell. I made a terracotta collar to go around the outershell that has a gap of about 8mm between it and the flue pipe. A tighter fitting cap also in terracotta sits over this collar and I sealed between it and the flue pipe with thermoseal. this setup keeps out all weather but the terracotta cap and flange allow moisture out. It works really well view it in finished ovens (about p.6 I think)
        Kindled with zeal and fired with passion.


        • #5
          Re: Sealing between stucco and flue pipe

          I used a latex based furnace caulking and this stuff is super! It has not cracked or shrunk at all! I'm sure it's widely available at any plumbing supply or home improvement store. I used it to seal the cement board to the outer edge of the clay flue at the top of the chimney and it's as tight as the first day I applied it (about a year ago)!
          View my pictures at, Picasaweb.google.com/xharleyguy


          • #6
            Re: Sealing between stucco and flue pipe

            Thanks mate will try to look it up here downunder.
            cheers Cooky