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Mortar required to build a 42" dome - Forno Bravo Forum: The Wood-Fired Oven Community


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Mortar required to build a 42" dome

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  • Mortar required to build a 42" dome

    Does anyone have the calculation for how much mortar they using building a 42" dome? A builder just asked me.

    If you made your own mortar (either recipe), could you total up the weight?

    Pizza Ovens
    Outdoor Fireplaces

  • #2
    For my 42" dome I purchased:
    4 5-gallon buckets of sand
    2 60-lb bags of cement (not concrete mix)
    3 bags of clay

    After finishing the dome I have left over:
    1 5-gallon bucket of sand
    1/2 bag of cement
    2+ bags of clay

    I really does not take much to build this project. Just buy a little more than you might possibly need so you can pass on the leftovers to someone else!


    • #3
      I used the 3 part sand, 1 part fireclay, 1 part lime and 1 part portland recipe and used just under a bag each of the portland and lime (80lb each) and just over a bag of fireclay (60#), call it 80#. I didn't count the sand bags, but I guess you would figure 240# give or take. I used some of the sand and fireclay under the bricks of the hearth.


      • #4
        Thanks for that,

        I am estimating the following from the 3:1:1 recipe:

        150lbs of sand
        50lbs of Portland
        50lbs of Fire clay

        That's about 250lb of mortar. How does that sound?

        What would our other builders say to that?

        Pizza Ovens
        Outdoor Fireplaces