#1  
Old 09-10-2006, 07:04 PM
Serf
 
Join Date: Sep 2006
Posts: 2
Default Just started and 4 dumb questions

1. does dome pizza oven need an actual door or does the heat somehow stay inside?
2. How would one get the thing to behave more like an outoor fireplace as well?
maybe a bigger opening?, a movable opening?
3. do they all need a damper
4. If one poured conc around the brick, would that be enough insulation?

anyone
Los Angeles
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  #2  
Old 09-10-2006, 08:05 PM
dmun's Avatar
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Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default Hi

Quote:
Originally Posted by Tomasogrady
1. does dome pizza oven need an actual door or does the heat somehow stay inside?
When used for pizza, with a fire in the oven, there is no door used. With the fire removed, for retained heat cooking, a door more like an insulated plug is inserted in the inner opening, inside the flue location.
Quote:
2. How would one get the thing to behave more like an outoor fireplace as well?
maybe a bigger opening?, a movable opening?
You don't want a bigger opening in the dome proper, or you will suffer heat loss. You can flare your entry, and bring the fire forward under the flue, to enjoy the fire after dinner.
Quote:
3. do they all need a damper
Most people who build an oven don't use a damper. If you were building an inside oven, and were concerned about heat loss when not in use, you could install a damper. There's no need to regulate the flue opening during use.
Quote:
4. If one poured conc around the brick, would that be enough insulation?
NO! it would take forever to heat up, and when it got hot it would leak heat badly, and not maintain cooking temperature. There are not many things that every one here agrees on, but one is that that you can never have too much insulation.

Good luck with your project. Keep us posted. We like photos and sharing.
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  #3  
Old 09-11-2006, 03:54 AM
Fio Fio is offline
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Join Date: Apr 2006
Location: Virginia
Posts: 166
Default Concrete is NOT insulation

Quote:
Originally Posted by Tomasogrady
4. If one poured conc around the brick, would that be enough insulation?

anyone
Los Angeles
Concrete is not an insulator - it is a conductor of heat. A thick concrete cladding would suck up all the heat made by the fire and your oven would take forever to heat. What's worse, it would lose heat more rapidly.

You need a barrier to prevent the transmission of heat from the bricks to the outside. An insulating blanket, made of fireproof ceramic fiber, is what is used.
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There is nothing quite so satisfying as drinking a cold beer, while tending a hot fire, in an oven that you built yourself, and making the best pizza that your friends have ever had.
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