Island hearth.
I am installing a new Forno Bravo refractory oven here in Healdsburg, and will be doing the Island hearth. The hearth is 7 1/2", with a 3 1/2 (+/-) concrete support layer, 2" vermiculite layer (+/-), and either a 2 1/2" or 1 1/2" thermal layer (still deciding). I am going to use firebrick for the thermal layer, and surround it with vermiculite concrete on the sides. My hope is that it will heat up quickly and do a good job of heat storage for the cooking floor, without the risk of wicking heat down and sideways -- away from the cooking floor. It should be more efficient that concrete, and doesn't cost too much more. I will mortar the FB Casa oven floor directly to the firebricks.
I'm taking photos, and will let you know how it goes -- and later, how it cooks.
James
I am installing a new Forno Bravo refractory oven here in Healdsburg, and will be doing the Island hearth. The hearth is 7 1/2", with a 3 1/2 (+/-) concrete support layer, 2" vermiculite layer (+/-), and either a 2 1/2" or 1 1/2" thermal layer (still deciding). I am going to use firebrick for the thermal layer, and surround it with vermiculite concrete on the sides. My hope is that it will heat up quickly and do a good job of heat storage for the cooking floor, without the risk of wicking heat down and sideways -- away from the cooking floor. It should be more efficient that concrete, and doesn't cost too much more. I will mortar the FB Casa oven floor directly to the firebricks.
I'm taking photos, and will let you know how it goes -- and later, how it cooks.
James
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