Blanket Insulation Pompeii Oven Construction Discuss Blanket Insulation in the Pizza Oven Design and Installation forums; I am still struggling with how much insulation is required. I have purchases 8# kaowool 1" blanket. I am planning ...

[philiph4@ameritech.net]

I am still struggling with how much insulation is required. I have purchases 8# kaowool 1" blanket. I am planning an igloo style oven and don't want spend more on insulation than necessary. Opinions seem to be all over the board. I want to have a fully functioning (not only for pizza) oven. Is 2" enough or do I need more? I have a lot invested already and i certainly don't want to skimp here but I also don't want to spend more than I need to. Is there an official FB opinion?

[redmen4]

I am also building an igloo style oven. I am planning on 3 inches of blanket insulation, with no additional insulation. On to p of the insulation will go my stucco. I have researched what you are asking on the site. I do remember that the consensus was 3 inches of blanket insulation was more then sufficient.

Jim

[captkingdom]

I used 12" of Roxul blanket, which is a mineral or rock wool product.
It is working great. I also put down 3 layers of aluminum foil first as a radiant heat barrier. I did not use a Portland product for mortar which some have said would corrode the foil. I suspect though that even for those who do multiple layers would work fine.