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Old 02-06-2014, 09:44 AM
Serf
 
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Location: napa
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Default Floor Insulation

Hi all just have a quick question, I have been searching the forum about floor insulation and can't find the answer. Can I put the soldier bricks directly on top of vermiculite concrete,I am concerned that it will not support the weight of the oven
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Old 02-10-2014, 12:17 PM
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Default Re: Floor Insulation

G'day
Yes there is no problem with the insulation layer supporting the oven whether its pearlite cement or ceramic board. I know you can dint the surface of both with a fingernail but the weight is spread out so its supported. All the ovens here are built directly on the insulation
Regards dave
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Old 02-10-2014, 07:04 PM
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Default Re: Floor Insulation

Tarter3,
Dave is right about that. I just want to elaborate on vcrete strengths. A 5 to 1 (vermiculite to portland cement) is what is recomended for the floor. Vcrete over the dome is usually about 10 to 1. You probably have picked that up already. I just wanted to be sure .
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Old 02-11-2014, 09:41 AM
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Post Re: Floor Insulation

just a recommendation: use some FB Board or equivalent for the actual base under the floor bricks. I think the gain in efficiency and heat retention is easily justified.

Texman
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Old 02-11-2014, 12:04 PM
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Default Re: Floor Insulation

I used both vermiculite (bottom 3.5") and 2" calcium silicate board on top. After a number of 800-900F pizza sessions the bottom of the support slab remains at ambient temp.
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Old 02-11-2014, 03:56 PM
Peasant
 
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Default Re: Floor Insulation

When you look at the vermiculite slab you think there is no way that it will support the dome but it does and is surprisingly strong.
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Old 02-12-2014, 05:16 AM
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Default Re: Floor Insulation

Quote:
Originally Posted by GianniFocaccia View Post
I used both vermiculite (bottom 3.5") and 2" calcium silicate board on top. After a number of 800-900F pizza sessions the bottom of the support slab remains at ambient temp.
Question...are you finding the floor too hot?
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Old 02-12-2014, 05:51 PM
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Default Re: Floor Insulation

Quote:
Originally Posted by stonecutter View Post
Question...are you finding the floor too hot?
is the floor soap stone?
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Old 02-12-2014, 10:19 PM
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Default Re: Floor Insulation

Quote:
Question...are you finding the floor too hot?
Initially, when I relied on only dome-reflected flames to heat the floor I could only get 400-500F in the center of the floor, making for some pretty doughy pizzas. Now, charging the floor with coals for several minutes, I have been able to get both dome and floor 800F.

The last few sessions this has worked well for my neopolitan pies using Caputo 00 and sourdough starter.
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Old 02-13-2014, 11:58 AM
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Default Re: Floor Insulation

G'day
You got to be happy with results like that... Good look' pie
Regards dave
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