web analytics
old style lime mix instead of refractofy cement - Forno Bravo Forum: The Wood-Fired Oven Community


1 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.
2 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
3 of 3 < >

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.
See more
See less

old style lime mix instead of refractofy cement

  • Filter
  • Time
  • Show
Clear All
new posts

  • old style lime mix instead of refractofy cement

    hi guys! has any one used the one part portland cement one part hydrated lime six part sand mix instead of fire resistant cement which can be costly.
    please tell me if you have used it pros,cons!


  • #2
    Re: old style lime mix instead of refractofy cement

    That is a regular Type N mortar, with minimal refractory characteristics. That said, I have seen a lot of old fireplaces that were in heavy use and good shape that used it with 3/8" joints.

    For the effort required to build an oven, I would not risk it, though.


    • #3
      Re: old style lime mix instead of refractofy cement

      If you're out to save money, I'd stick with the tried and true homebrew mortar.

      Here is the recipe for fire clay mortar, where you measure by volume (use a bucket or shovel to measure):

      1 part portland
      3 parts sand
      1 part lime
      1 part fire clay
      I know fireclay is a little hard to find in the UK, but it's worth the search. It's the only really refractory item in the mix. If mason's suppliers don't have it try pottery supplies. I haven't used the homebrew stuff, but it's said to work better if you get really fine sand.
      My geodesic oven project: part 1, part 2


      • #4
        Re: old style lime mix instead of refractofy cement

        HI D,

        I'am a little surprised to see the lime in the mix, I thought that it would burn out. I have been mixing a fireclay mortar at
        2 parts sand
        1 part port
        1 part fireclay
        I would have to admit that the lime would make it easier to lay, If it had no ill effects. I learned from an old time brick mason, but that does'nt mean it was correct. any thoughts on this?


        • #5
          Re: old style lime mix instead of refractofy cement

          The lime will not deteriorate with heat like the portland cement does over 300C. Use the 3:1:1:1 fine sand,pot cement, lime, fireclay. Be careful with the lime, use a good quality hand barrier cream and or rubber gloves. Hurts like hell in a cut and dries out the skin on your hands otherwise.
          Kindled with zeal and fired with passion.


          • #6
            Re: old style lime mix instead of refractofy cement

            I'm using the home brew for my oven and it spreads and sticks well. I use rubber gloves so no problem with my hands. I bought one bag each of fire clay, portland and lime along with a yard of fine masons sand. Plenty to do the whole oven.

            Member WFOAMBA Wood Fired Oven Amatueur Masons Builders America