web analytics
Floor blocks spreading? - Forno Bravo Forum: The Wood-Fired Oven Community



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

Floor blocks spreading?

  • Filter
  • Time
  • Show
Clear All
new posts

  • Floor blocks spreading?

    I have had my 900mm homebuild firebrick oven up and cooking well for 6 months now. Cooks great.
    However the firebrick floor was set with no gaps between them and now the ash has gotten between the bricks and seems to be spreading the bricks apart. The bricks were laid on hebal with fireclay as listed in the plans.
    The gaps seem to be getting bigger and a CRACK IS NOW FORMING in the dome in line with the biggest floor gap.

    Can this be stopped?
    Can i clean out all the ash from the gaps and fill it with hi temp morter etc to stop this.
    I am concerned if the dome cracks then the insulating blanket fibres could enter the dome during cooking. Idid not cover the dome in al foil before insulating as I did not want to trap water in.
    Any thoughts?

  • #2
    Re: Floor blocks spreading?

    Originally posted by robertjusher View Post
    Can i clean out all the ash from the gaps and fill it with hi temp morter etc to stop this.
    The ash is filling the expansion in the joints between the firebricks, not causing the problem.
    The English language was invented by people who couldnt spell.

    My Build.



    • #3
      Re: Floor blocks spreading?

      HI and thanks Brickie
      Do you think this will settle down and the crack will stay the way it is?
      It's been the same size for a while now and does not effect the cooking ablity in any way.
      I love my new oven and would hate to have to rebuild it.
      I get people ask when are they getting invites again !!!


      • #4
        Re: Floor blocks spreading?

        Could the hebal, be causing the problem?


        • #5
          Re: Floor blocks spreading?

          Don't worry about the gaps in the floor bricks, they allow for expansion and will fill with ash. Just leave the ash in there. Regarding the dome crack, it is just your dome finding its "comfort zone" from the expansion and contraction cycles. They usually don't get any worse, but if it's bigger than being able to fit a playing card in it you could try to fill it. It is usually only partially successful though. You may be right the expansion and contraction of the dome against the blanket could abrade it and some fibres could find their way into the oven. The fibres are only dangerous to inhale not to ingest. To plug the crack dampen around the crack, wait a few minutes then try squishing in a mixture of equal parts fine sand, fireclay and lime.
          Kindled with zeal and fired with passion.