web analytics
Rockwool for hearth insulation - Forno Bravo Forum: The Wood-Fired Oven Community


1 of 3 < >

Forum Page Loading Response

Forum Members:

We have received feedback regarding recent issues with page loading response time. We believe the slow response issue stems from the analytics we added with the new Forum. We are in the process of reconfiguring those elements and, after an approximate 24-hour time period for the reconfiguration to run, we anticipate a return to normal page load times. Thank you for your patience!
2 of 3 < >


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.
3 of 3 < >

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

Rockwool for hearth insulation

  • Filter
  • Time
  • Show
Clear All
new posts

  • Rockwool for hearth insulation


    I am new to this forum and starting my WFO build.

    I would like to know if this can be used for hearth insulation http://www.knaufinsulation-process-s...eb-1213-UK.pdf

    it is rated up to 700 C / 1300 F

    Thanks, Gorazd

  • #2
    Re: Rockwool for hearth insulation

    Rock wool is not quite as good an insulator as calcium silicate board, but it's cheaper.i've used rock wool blanket but it has the reputation of being extremely water absorbent, although I notice your product claims to be water resistant, they probably have treated it with something. The main thing I'd be concerned about is its strength. Will it be strong enough to withstand the weight of an oven built on top of it without compressing?
    Most builders go for calcium silicate board under the floor or if you want a cheaper way of doing it cast your own vermicrete slab using a 5:1 ratio.vermiculite, cement.
    Last edited by david s; 04-03-2014, 01:13 PM.
    Kindled with zeal and fired with passion.


    • #3
      Re: Rockwool for hearth insulation

      I haven't seen rock wool insulation that comes in boards. I could only find rock wool blankets. Good for you to find one. I agree with david s. I think that Vermiculite or Perlite in the ratio 5:1 with cement would be cheaper and better than the rock wool board. I even had several weeks delay in my build looking for hearth insulation. If I find one I'll be done in a week or two.
      Why is this thus? What is the reason for this thusness?
      I forgot who said that.


      • #4
        Re: Rockwool for hearth insulation

        Thanks for your inputs. I finaly found some specs about load bearing properties and it is not going to work. High temp board has compression strength of only 250Pa, normal rockwool board is 2MPa.