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tartar3 02-06-2014 09:44 AM

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

cobblerdave 02-10-2014 12:17 PM

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

Gulf 02-10-2014 07:04 PM

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 :).

texman 02-11-2014 09:41 AM

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

GianniFocaccia 02-11-2014 12:04 PM

Re: Floor Insulation
 
1 Attachment(s)
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.

hungng 02-11-2014 03:56 PM

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.

stonecutter 02-12-2014 05:16 AM

Re: Floor Insulation
 
Quote:

Originally Posted by GianniFocaccia (Post 169370)
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?

TropicalCoasting 02-12-2014 05:51 PM

Re: Floor Insulation
 
Quote:

Originally Posted by stonecutter (Post 169413)
Question...are you finding the floor too hot?

is the floor soap stone?

GianniFocaccia 02-12-2014 10:19 PM

Re: Floor Insulation
 
1 Attachment(s)
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.

cobblerdave 02-13-2014 11:58 AM

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


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