#1  
Old 07-27-2009, 09:11 AM
Serf
 
Join Date: Jun 2009
Location: my house
Posts: 10
Default brick or fire brick

how much more heat loss in normal brick vs fire brick iam only going to use the oven to cook maybe 4 pizzas at a time the oven is a 36 inch with a 3 1/2 vermiculite under were the floor will be and around the dome will be a 1 to 2 inches vermiculite the a 4 inch brick wall and 2 to 3 inches of vermiculte on top of the dome so do i realy need to spend the extra monney on fire brick
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  #2  
Old 08-16-2009, 11:11 PM
Rodneyf's Avatar
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Join Date: Mar 2009
Location: Sydney Australia
Posts: 148
Default Re: brick or fire brick

I have used solid clay bricks that were recycled from a 92 yr old fence. I have only just finished my oven and cooked twice now but they work just fine and I have no cracking yet. I had the top of the dome at over 400C yesterday and the same place 20 hrs later with no door attached just a few bricks placed in front still measures at 120C. Check out my build on the link and there are photos on this site as well. Good luck which ever way you go and we would like to know which country you are in.

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Old 08-17-2009, 09:32 AM
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Join Date: May 2009
Location: Seattle, WA
Posts: 220
Default Re: brick or fire brick

Well, I think the issue with regular brick isn't so much the heat retention. The problem can arise with the continual cycle of heating and cooling which will cause regular clay bricks to flake and crack over time.
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Old 08-17-2009, 10:54 PM
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Location: Sydney Australia
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Default Re: brick or fire brick

I know of clay brick ovens that have been in use for 20yrs and there has been no problem. You will get some spalling but I am told this happens on the cool down cycle and that is not going to affect the taste of the pizzas.
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Old 08-18-2009, 07:17 AM
Il Pizzaiolo
 
Join Date: Jan 2007
Location: Tampa, FL
Posts: 1,446
Default Re: brick or fire brick

istoven,
Members from "down under" have had pretty good success with what they call pressed red bricks, which have been used in construction there for a long time. I'm pretty sure they are a much better brick than a standard brick found in the US. I would not recommend using the standard bricks found at the home improvement stores, they have been proven to spall, crack, and crumble in no time.....unless you enjoy REALLY crunchy pizza, stick with firebricks.
I guess the question is, where are you located?

RT
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Old 08-18-2009, 09:54 AM
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Default Re: brick or fire brick

I want to see this builder cook four pizzas at a time in a 36 inch oven. Now there's a you-tube I would watch!
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Old 08-18-2009, 10:39 AM
Il Pizzaiolo
 
Join Date: Jan 2007
Location: Tampa, FL
Posts: 1,446
Default Re: brick or fire brick

dmun, I didn't catch that part the first time, I had to reread. I sure hope he ment a TOTAL of 4 pizzas.....4 at the same time would be a comedy event for the ages. I remember how frantic I became the first time I attempted 2.

RT
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Old 08-18-2009, 12:06 PM
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Location: Kentucky
Posts: 1,649
Default Re: brick or fire brick

One time I had three personal-sized pies in the oven, but the third went in just before I took the first one out (and I had a helper).

Once his oven is built and he's cooking, he'll understand
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Old 08-18-2009, 09:48 PM
Peasant
 
Join Date: Aug 2009
Location: WA /BC /ZH
Posts: 49
Default Re: brick or fire brick

Well as everyone has pointed out you are going to find it hard to cook four pizzas at once. Not that it's impossible, but it is a hard thing to do until you've cooked literally hundreds, if not thousands of pizzas.

Anyway, clay bricks will hold something like 15 - 20% less heat as compared to firebrick if that is useful. Clay bricks will be cheaper, but will crack & spall more. But it's still better to use clay bricks than have no oven at all.

Do you happen to live near a firebrick manufacturer? If so you might be able to buy factory seconds (firebricks) cheaper than clay bricks normally cost. Or keep an eye out on Craigslist. HTH


edited for clarity & typos

Last edited by pacoast; 08-20-2009 at 11:56 AM.
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Old 08-29-2009, 07:12 PM
Serf
 
Join Date: Apr 2009
Location: fargo nd
Posts: 4
Default Re: brick or fire brick

my father built a barbeque gill using standard brick and mortar over 60 years ago and was used on a weekly basis for 40 of those years, it is still in good condition, i chose to use regular brick for my oven based on that.
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