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FB Board under floor AND dome? - Forno Bravo Forum: The Wood-Fired Oven Community



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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FB Board under floor AND dome?

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  • FB Board under floor AND dome?

    I just received my FB board and I am ready to build my Pompeii oven, finally.

    However, the FB board seems softer than I expected. I am not sure that this material will support the weight of the dome and the vent. Maybe it is only supposed to be under the floor and the dome rests on the concrete foundation.

    Any insight would help, I am ready to go if I can figure this out...

  • #2
    Re: FB Board under floor AND dome?

    The board can support the weight. You need the dome insulated from the hearth. When you say softer, what exactly do you mean? In no way is the stuff like concrete but it should be fairly firm.
    Check out my pictures here:

    If at first you don't succeed... Skydiving isn't for you.


    • #3
      Re: FB Board under floor AND dome?

      By soft I meant that my finger can leave an imprint. I did not expect it to be like concrete. Not exactly sure what I expected, but the dome will probably weight a half ton or so and all that weight will be on the 4 1/8" ring of my fire brick. Just didn't seem logical to me.

      Did you use FB board without any issues?


      • #4
        Re: FB Board under floor AND dome?

        The board you got will be fine. I'm sure the FB folks would not send out an unsuitable product. Yes, the board will seem too soft to support the entire weight of your oven, but this is a common perception. Just make sure you don't let any portion of your dome (and entry) come into direct contact with anything other than insulation. Any contact will cause heavy losses of heat through conduction which translates into excessive wood requirements during heat-up and rapid loss of residual heat.


        • #5
          Re: FB Board under floor AND dome?

          I thought that contact with the concrete might act as a "thermal short", but I was more worried about the weight.

          Since it looks like its OK I will proceed. Thanks

          When you lay down the FB board should you level with sand or fire clay?
          Maybe the bricks should be leveled on top of the FB board?

          I noticed that the fire brick thickness seems to vary enough to show lips...


          • #6
            Re: FB Board under floor AND dome?

            The recommended solution is to level the bricks on the board with a 50/50 blend of fine sand and fireclay, although there's nothing that says you couldn't fill voids between the board and your concrete suppoort slab with the mix as well.

            You can mix water with the blend and (notched) trowel it on wet or do what I did: just trowel on dry and tap the bricks with a hammer until you're satisfied. If you wet the bricks from the top it will set your 'mortar' underneath.

            You may want to level your floor bricks with a slight slope towards the entryway so if any water gets in it will run out.


            • #7
              Re: FB Board under floor AND dome?

              Thanks for the pointer Gianni.

              I'll see how much flex the FB board has when I lay it down and then I can determine if I need to level underneath it. Since I will be using the FB board I'll probably mix in very little water as to not saturate the board. Just enough to get the mix to flow.

              I've spent years thinking about this build and just as many getting my site ready. Now that I am finally at the point where I can build my dome I don't want to leave anything to chance.

              Wish me luck