web analytics
Building error...Suggestions? - Forno Bravo Forum: The Wood-Fired Oven Community


1 of 2 < >


Hello, Forno Bravo Community Forum members.

As many may have noticed already, the Community Forum site was briefly down today. While working on scheduled routine maintenance, we encountered an error when trying to add a software update. As the site is now back up and running, some of you may notice that some recent data has been misplaced from November 10th up to today. We are currently working on resolving the issue. The forum has full operational capabilities and we encourage all forum members to continue actively posting in the threads.

We apologize for any inconvenience that this issue may have caused you. The Forno Bravo family values each and every member of our community. If you have any issues or concerns, please feel free to let us know on our issues thread here:


Thank you for understanding.
2 of 2 < >

Forno Bravo Forum Thread Message

Hello, Forno Bravo Community Forum Members!

The Forno Bravo team has heard the feedback in regards to the community forum. We wanted to take the time to re-enforce our commitment to a fully engaged Forum with professional moderation.

Our top priority as a company is to fix all forum errors and issues that you are experiencing. As we are swiftly working on these problems, we want to say that we highly value the Forum Bravo Community Forum and every single community forum member.

We have set up this thread so that every member can address any concerns, issues and questions about the forum. Please feel free to ask whatever you would like in regards to the forum; let us know what issues you are experiencing so we can work on resolving them as fast as possible. However, we stress that we would like constructive engagement, so please be specific about the issue you are experiencing.

Thank you for all of your patience and continued support.

Link to topic: http://www.fornobravo.com/community/...with-new-forum
See more
See less

Building error...Suggestions?

  • Filter
  • Time
  • Show
Clear All
new posts

  • Building error...Suggestions?

    Suggestions welcomed...
    I believe that (in my usual- "what the heck, if that doesn't work we'll just have to adapt and overcome"- method of buidling) I may have committed a gaff.
    At the risk of being too in-depth: I am dealing with some space limitations so poured a concrete slab as large as my site would allow -roughly 6' wide X 5'6" deep. Atop this foundation was erected a block wall ending in an additional reinforced concrete 'pad'. Finally atop this pad a 5" layer of vermiculite/concrete mixed in the standard 5:1 ratio as the insulating hearth. My error, however is that I topped the entire top surface with the insulating concrete leaving no surface to build an additional 'retaining' wall that would provide space between (it) and the external oven wall to enclose insulation. (Poor description).
    However, my belief is that as the igloo style build will sit well inside the outer dimension of the insulated hearth, I will be able to apply insulating concrete to a depth of 8+" over all surfaces. Then, using lath and stucco can enclose the previously exposed 'raw' edge of the insulating hearth when I stucco the entire vertical block surface and oven wall/roof.
    Is there crazy thinking going on on my part?

    Final question - and yes I prowled the insulation threads - Do any of you really feel strongly enough about the improved insulation between FB's ceramic blanket and insulating concrete to strongly recommend using it? Shipping is exhorbitant but I could pick up one box while in Ca next week and ship it to myself moderately inexpensively and then continue with the concrete mix to finish. Besides, I'd like to support FB for the help they provide.

    Thanks all.

    Never do once what can be done thrice.
    Last edited by Barstool; 04-28-2011, 09:55 AM.

  • #2
    Re: Building error...Suggestions?

    I help with the second question. Use the ceramic blanket product. Either source through Forno Bravo or look to this local vendor as a possible source for this material. It will likely not be any cheaper. However, you will save the postage.


    • #3
      Re: Building error...Suggestions?

      Either way, removing perlcrete is about as difficult as carving a pumpkin.


      • #4
        Re: Building error...Suggestions?

        Pictures man, we need pictures!!
        My oven (for now):


        • #5
          Re: Building error...Suggestions?

          Not being a great one for picture taking...my hands tend to be awfully grubby. I think this illustrates my question somewhat. I suspect I will have a total of 3.2 photos by the time the project is complete (or abandoned).
          Attached Files


          • #6
            Re: Building error...Suggestions?

            The advantage to ceramic fiber blanket and boards is in there insulating properties. 2" blanket on the dome, 2" board under the hearth = 4" of vermiculite or perlite concrete. I would try to source locally, I'm sure that you have a refractory supplier or pottery kiln supplier somewhere close by.



            • #7
              Re: Building error...Suggestions?

              Your issue with the "extra perlcrete/vermicrete" slab layer is covered pretty well in Cdubs' Casa90 Build thread in the Forum's Getting Started section. (I put a link below to the second page of the discussion where his "problem" and yours coincide.) Take a look at how he ended up cutting some of the extra vermicrete skirt away from the slab to secure his enclosure build. He also has a pretty good series of comments/discussion from other members on the insulating blankets and value of additional cement based insulating cover.

              Mike Stansbury - The Traveling Loafer
              Roseburg, Oregon ( www.sablesprings.com )
              Photo Albums: http://www.fornobravo.com/community/...BForum_Gallery


              • #8
                Re: Building error...Suggestions?

                Once your oven dome and insulation is finished, I would cut back the suspended slab insulation layer.

                The vermicrete is very porous and you do not want to expose it to moisture.


                • #9
                  Re: Building error...Suggestions?

                  Originally posted by Barstool View Post
                  my hands tend to be awfully grubby.
                  We dont want pics of your hands.

                  My hands are always grubby but I take lots of pics, the boys and girls here need a fix, or is that a pix?
                  The English language was invented by people who couldnt spell.

                  My Build.