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Flue Liner - Forno Bravo Forum: The Wood-Fired Oven Community



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Flue Liner

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  • Flue Liner

    I am using a taracotta flue liner. When I put the roof on what do I use to put around the liner? Do I have to put anything? This is my first oven, I will be posting pictures soon, I am having a great time doing this on my own. Please let me know about the liner

  • #2
    Re: Flue Liner

    I ran into a similar issue when I ran my terracotta flue pipe through the roof on my oven.

    Not sure I took the easiset route, but it seems to be working well for me.


    I took some of the ceramic iblanket scraps I had left and wrapped it around the flue tile where it passed through the roof. I have at least a 3 inch gap between the flue and the metal studs used to support the roof. I do not have any combustibles in my enclosure construction until it comes to the rubber membrane roof.

    I made roughly a 5 inch frame of the iso board around the flue and attached it with construction adhesive around the outside edge only. I smeared hi temp silicone on all the cracks.

    Over that I installed my rubber membrane roof, careful to keep it 3 inches or more away from the flue tile.

    I then made a small form 1 inch larger in all dimensions than the ceramic isoboard curb, wrapped a piece of cardboard around the flue tile to leave an expansion gap and poured a chimney cap. Since it was rather thin, I used fiberglass reinforced stucco mix and threw in a shovel full of gravel.

    After it cured I pulled the cardboard out from between the flue and the cap and sealed the gap with hi temp silicone. I painted the flue and the cap with black paint when I was done per the picture below.

    Good luck!
    Attached Files
    My oven progress -