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istoven 07-06-2009 09:31 AM

isalation layer
if the brick dome is on a layer of fire bricks do i need a insalation layer below the fire bricks

Modthyrth 07-06-2009 09:40 AM

Re: isalation layer
Yes, insulation under the floor bricks is critical to a successful oven. The free plans offer a lot of good information on this topic; have you found and downloaded them yet?

istoven 07-06-2009 08:02 PM

Re: isalation layer
yes i downloaded them but is there a cheaper insalation then perulite and vermiculite because i cant afford it

cynon767 07-06-2009 08:15 PM

Re: isalation layer
unfortunately, perlite/vermiculite is the cheaper option... but the cost definitely balances out in the long run if you weigh it against the cost of wood in an uninsulated oven.

ThisOldGarageNJ 07-09-2009 05:11 PM

Re: isalation layer
maybe you should build an earthen oven, or is it called a cob oven ? do a forum search, i bet thats the cheapest way you can go

istoven 07-16-2009 02:15 PM

Re: isalation layer
how much vermerculit do i need for a 48 by 56 by 3.5 insalation layer

dmun 07-16-2009 04:18 PM

Re: isalation layer
(48 x 56 x 3.5) / 1728 in per cu foot = 5.4444 cubic feet. The portland doesn't much change the volume of the vermiculite.

istoven 07-16-2009 06:50 PM

Re: isalation layer
so 5 cubic feet of vermiculite sorry new at this so iam a litle mixed up

istoven 07-16-2009 08:11 PM

Re: isalation layer
will one bag of 90lb portland cement be anuff

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