We get a lot of questions on hearth size for the various oven sizes, and as there is not an "exact" hearth size for each oven, I am posting the method for how you can calculate the hearth size that works for your site.

I am also attaching a drawing that you can use as a worksheet to calculate your hearth size.

STAND WIDTH

For oven width, take the exterior width of your oven (oven floor, plus oven wall width), then add 10" for your insulation (1" insulfrax and 4" vermiculite), then add the thickness of your enclosure walls (1/2" for an Igloo, 2" for a metal stud wall, 4" for a concrete block split, etc.)

For example, a Casa90 (35.4" cooking floor) is 40.1" wide externally. That means the stand for an Igloo enclosure should be 51" wide. 40+10 (insulation)+1 (enclosure walls).

If you are building a 42" Pompeii oven, you have 42 (floor)+9 (walls)+10 (insulation)+1 (enclosure wall) = 62".

STAND DEPTH

For the oven depth, you take the depth of the oven and vent, then add 5" for rear insulation, then wall thickness, and then space for your oven landing.

The Casa90 is 43.5" deep, including the vent. If you want a 12" landing, the hearth should be 43.6 (oven and vent)+5 (rear insulation)+.5 (one wall) +12 (landing) = 61".

The 42" Pompeii oven works as follows. 42 (floor)+9 (walls)+6 (vent floor)+5 (rear insulation)+.5 (one wall)+12 (landing)=74.5".

You can find the dimensions of the Forno Bravo Casa, Premio and Artigiano ovens in the installation guides here:

http://fornobravo.com/pizza_oven_ins...tall_home.html

James

I am also attaching a drawing that you can use as a worksheet to calculate your hearth size.

STAND WIDTH

For oven width, take the exterior width of your oven (oven floor, plus oven wall width), then add 10" for your insulation (1" insulfrax and 4" vermiculite), then add the thickness of your enclosure walls (1/2" for an Igloo, 2" for a metal stud wall, 4" for a concrete block split, etc.)

For example, a Casa90 (35.4" cooking floor) is 40.1" wide externally. That means the stand for an Igloo enclosure should be 51" wide. 40+10 (insulation)+1 (enclosure walls).

If you are building a 42" Pompeii oven, you have 42 (floor)+9 (walls)+10 (insulation)+1 (enclosure wall) = 62".

STAND DEPTH

For the oven depth, you take the depth of the oven and vent, then add 5" for rear insulation, then wall thickness, and then space for your oven landing.

The Casa90 is 43.5" deep, including the vent. If you want a 12" landing, the hearth should be 43.6 (oven and vent)+5 (rear insulation)+.5 (one wall) +12 (landing) = 61".

The 42" Pompeii oven works as follows. 42 (floor)+9 (walls)+6 (vent floor)+5 (rear insulation)+.5 (one wall)+12 (landing)=74.5".

You can find the dimensions of the Forno Bravo Casa, Premio and Artigiano ovens in the installation guides here:

http://fornobravo.com/pizza_oven_ins...tall_home.html

James

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