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Old 08-24-2007, 01:19 PM
Apprentice
 
Join Date: Jul 2007
Location: Ohio
Posts: 101
Default Structural or Insulating

For the hearth slab, do I pour regular concrete first then cap with the insulating concrete or insulating concrete then regular concrete?
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Old 08-24-2007, 01:22 PM
james's Avatar
Brick Oven Merchant
 
Join Date: Mar 2005
Location: Pebble Beach, CA
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Default Re: Structural or Insulating

Welcome aboard Mojoe,

The structural layer is below (at the bottom), and the insulating layer (either SuperIsol or vermiculite concrete) sits on that. The oven in turn sits on the insulation, and you really only need insulation below the oven floor itself.
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Old 08-24-2007, 01:33 PM
Apprentice
 
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Default Re: Structural or Insulating

Makes perfect sense. Is the insulation layer hard enough to anchor J bolts for sidewalls and a roof?
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Old 08-24-2007, 01:37 PM
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Default Re: Structural or Insulating

From what I have read it is better to put the J bolts in the bottom layer.
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Old 08-24-2007, 01:42 PM
Apprentice
 
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Default Re: Structural or Insulating

One of these days I should learn to trust my gut instinct... back to the store for longer bolts.
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