Insulation
While too much oven thermal mass can be a bad thing, there is no such thing as too much insulation. Luckily, through modern manufacturing advances it is now possible to easily and cost-effectively insulate a wood fire oven using 100% woven ceramic insulation. Which is a good thing. As the optimal oven design demands a thermal layer that can be efficiently heated throughout, it also demands that the oven's insulating layers be able to stop the heat in that layer, in order to retain all of that heat inside the oven.
Each Forno Bravo modular and assembled oven comes with all the insulation your oven requires, including:
For the oven dome, FB Blanket, a woven ceramic blanket, is highly efficient, and takes up very little space. We provide 3" of woven ceramic dome insulation with the Giardino and Casa2G ovens, 4" of dome insulation with the Premio2G and Professionale ovens, and 4-6" of dome insulation with the Modena2G ovens.
Under the oven floor, FB Board, an engineered insulating panel, provides an effective insulating layer beneath the thermal layers of the oven floor. We provide 2" of woven ceramic dome insulation with the Giardino and Casa2G ovens, 3" of dome insulation with the Premio2G ovens, and 4" of dome insulation with the Professionale and Modena2G ovens.
Alternatives to Avoid
Vermiculite and perlite are loose insulators (think of them as heat resistant popcorn). Both can be mixed with Portland cement to make insulating concrete, which can be used for both under oven insulation and dome insulation. FB Board and FB Blanket are both offer roughly double the insulating efficiency of vermiculite and perlite, where 3" of FB Blanket is equal to 6" of either loose vermiculite or vermiculite concrete.
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