Old 08-07-2013, 12:12 PM
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Location: Minneapolis, MN USA
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Default Re: remove the plywood support?

Originally Posted by caspian View Post
Now i'm confused. I am in the process of making my oven and i have it in this order (from the bottom). 4 1/2" concrete, 4" vermiculite/portland, 4" brick.

Wouldn't it make more sense to have the vermiculite closer to the heat or do i have it backwards?


Yours is correct, structural concrete on the bottom, insulating layer in the middle - in your case vermicrete, and fire brick floor of the oven.

In the previous example his insulation layer is on the very outside and is typical of an Alan Scott design with lots of mass in the floor. Typicaly used for ovens that run all the time in production of massive amounts of bread.
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