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Insulating Firebrick as a heat break? - Forno Bravo Forum: The Wood-Fired Oven Community

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Photo Galleries are back! Instructions below.

Dear forum users,
Thank you for your patience with the Photo galleries. We've got your galleries online!
We have finished writing a custom script to migrate the PhotoPlog to vBulletin5’s albums.

Unfortunately V-Bulletin killed the "Photoplogs" in their software upgrade which was unforeseen and we're the first development group to have written a script for getting the galleries back... that said, it took some time to reverse engineer the code and get the albums to move over seamlessly!

Forum users will be able to access their “PhotoPlog” images through their user profile page by clicking on the “Media” tab.
They will also be able to browse other albums by going to the albums page. (On the forum site, there is a link in the black bar beside “Forums” to the albums.)

In order for users to create an album please follow the steps below.
1) Go to user profile page and click “Media”
2) Click Add Photos
3) Enter Photo Gallery Title in the first field
4) Click Upload or Select from Photo Album to add photos
5) Click Post
6) Once posted, the album will be created as a “Topic” on the albums page for the public to see. The topic title will be the “Photo Gallery Title” they created before uploading their photos.


To create this migration path we used vBulletin5’s default album structure. Unfortunately, it won’t work like the “PhotoPlog” but is an album/gallery component on the forum now.
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Insulating Firebrick as a heat break?

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  • Insulating Firebrick as a heat break?

    I'm thinking about vent design and ways to incorporate a heat break.

    I see many people have used air gaps, but I am thinking about using insulating firebrick (IFB)

    Concept is to use a ~1-2 inch width of IFB between the inner arch and the outer arch.
    - in the floor - IFB covered with piece of stainless like Gianni has done
    - a layer next to the inner arch, as far up as the vent gap. Probably stagger 1 and 2 inch pieces in order to ensure a good bond with the rest of the arch
    - under the WFO side of the chimney support to complete the circuit

    This would leave me with a continuous band of IFB between the oven and the vent/landing. Seems like it would work but I have a couple of questions and there are probably other things I have not thought about:

    1) is the IFB strong enough to be part of the arch? It wouldn't be carrying all the weight
    2) is it too brittle? the way I am thinking about putting it in, It's not going to be very exposed to knocking with pizza peels and such, but if it's super crumbly it would still be a problem. Replacing it would be a huge pain
    3) is a couple of inches of IFB enough to make a dent in heat transfer?

    Would love to hear opinions. I did a search and found a couple people who mentioned doing things like this, but did not find any good documentation of results.
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  • #2
    Re: Insulating Firebrick as a heat break?

    Some folk have used them for this purpose and I think they work ok. But apart from creating insulation to reduce heat conduction, they don't provide an expansion joint to take up thermal expansion. An air gap or vermicrete does however. My solution was to make a lightweight cast entry and an 8mm vermicrete thermal break between it and the outer decorative arch. There are numerous solutions to include this idea, so think about what is happening and work out your own solution.
    Kindled with zeal and fired with passion.

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    • #3
      Re: Insulating Firebrick as a heat break?

      Originally posted by david s View Post
      Some folk have used them for this purpose and I think they work ok. But apart from creating insulation to reduce heat conduction, they don't provide an expansion joint to take up thermal expansion. An air gap or vermicrete does however. My solution was to make a lightweight cast entry and an 8mm vermicrete thermal break between it and the outer decorative arch. There are numerous solutions to include this idea, so think about what is happening and work out your own solution.
      Expansion joint. Yes, I see how this could be an issue. I knew there was something I wasn't thinking about!

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      • #4
        Re: Insulating Firebrick as a heat break?

        Most of the ovens on the forum dont have an expansion joint and work fine, mine included.
        The English language was invented by people who couldnt spell.

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