#1  
Old 07-06-2009, 09:31 AM
Serf
 
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Location: my house
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Default isalation layer

if the brick dome is on a layer of fire bricks do i need a insalation layer below the fire bricks
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  #2  
Old 07-06-2009, 09:40 AM
Journeyman
 
Join Date: Mar 2008
Location: Gilbert, AZ
Posts: 359
Default 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?
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  #3  
Old 07-06-2009, 08:02 PM
Serf
 
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Default Re: isalation layer

yes i downloaded them but is there a cheaper insalation then perulite and vermiculite because i cant afford it
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  #4  
Old 07-06-2009, 08:15 PM
cynon767's Avatar
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Location: Sacramento, California
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Default 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.
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Old 07-09-2009, 05:11 PM
Il Pizzaiolo
 
Join Date: Mar 2009
Location: USA
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Default 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
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Old 07-16-2009, 02:15 PM
Serf
 
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Default Re: isalation layer

how much vermerculit do i need for a 48 by 56 by 3.5 insalation layer
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  #7  
Old 07-16-2009, 04:18 PM
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Default 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.
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  #8  
Old 07-16-2009, 06:50 PM
Serf
 
Join Date: Jun 2009
Location: my house
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Default Re: isalation layer

so 5 cubic feet of vermiculite sorry new at this so iam a litle mixed up
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  #9  
Old 07-16-2009, 08:11 PM
Serf
 
Join Date: Jun 2009
Location: my house
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Default Re: isalation layer

will one bag of 90lb portland cement be anuff
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