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Insulation above hearth slab - 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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Dome Installation Video - Casa / Premio / Modena


For many of you who bought a modular oven, you may have asked how we put the domes together when we build them. For those of you considering one of our ovens, we shot a video to make your install easier.

Check it out on our You Tube Channel.


If the link doesn't work, simply go to You Tube and type Forno Bravo Channel. The video title is How to Set your Forno Bravo Oven Dome Pieces.

Thanks for participating in our Forum. We will have more video content available soon.
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Insulation above hearth slab

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  • Insulation above hearth slab

    I have just completed the hearth slab and the vermiculite/cement layer with one minor problem:I was unable to fully complete the vermiculite/cement layer (instead of the five inches , I only have one inch).
    I cannot continue with the insulation because I am unable to find the vermiculite.
    Question1 : Can I use the fornobravo ceramic blanket on top of the one inch inslation layer I already have ?
    Question2 : If I understand correctly, the ceramic blanket is Alumina and silica
    which is chemically similar to bricks. Will this blanket function as an insulator or as added mass?

  • #2
    Re: Insulation above hearth slab

    Question 1: for the insulating slab the blanket is the wrong stuff. You need an insulating board, like insblock 19 or cal-sil boards. There should be no trouble getting vermiculite or perlite if that's what you want to use: check with landscaping suppliers or pool suppliers, they should have them in the big bags. If you go with the refractory boards, you can use them right on top of what you have if it's level, and if it isn't, a little layer of dry fireclay or refractory mortar mix will level it out.

    Question 2: The insulation blanket is mineral wool, as you say, mostly silica. It is an insulator because it traps air spaces. If you use it under the mass of your oven, it will squeeze all the air out and become ineffective. Keep your blanket for on top of your oven.
    My geodesic oven project: part 1, part 2


    • #3
      Re: Insulation above hearth slab

      Dmun, as usual, is correct. Don't skimp on this step!!

      My Oven Thread:


      • #4
        Re: Insulation above hearth slab

        Sorry , I am referring to the fornobravo ceramic board, not the blanket.


        • #5
          Re: Insulation above hearth slab

          Yes, you can use the Forno Bravo board on top of the 1" vermiculite/concrete layer. That will provide even more insulation than many folks are using (you can use the 2" insulation board without any additional insulation under the oven floor).
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          Oven-building thread