#51  
Old 07-12-2011, 04:08 PM
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Default Re: My Modified Barrel Vault in Texas

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Originally Posted by wotavidone View Post
get its pozzolans (flyash from Port Augusta at present) from?
Like Tony would say, "they will bring it over in a GREAT BIG NEW SHIP from China"
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  #52  
Old 07-14-2011, 10:07 AM
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Default Re: My Modified Barrel Vault in Texas

Hey Perks1018; I have a couple more questions for you! First, you gave your inner dimensions as 31" deep by 28" wide. Since I've always had a fire burning in the back of the oven when cooking pizza, I'm wondering whether you feel "crowded" for cooking space when you put your pizza in? Secondly, in looking at your flue construction, I can see by the pics that you have supported half of the flue by constructing it next to or over the door arch; did you do anything special to support the flue on the interior side of the vault? Finally, have you made a door for your oven and/or tried to cook anything that requires low temps for long periods of time (e.g. bread, barbeque meats, etc.)? I'd be interested to hear how the little oven performs in these areas. Thanks!
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  #53  
Old 07-30-2011, 11:58 AM
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Default Re: My Modified Barrel Vault in Texas

I'm starting my barrel vault this week and could use some input. My hearth is a granite table (see pic) and I bought some 2" FB Board for hearth insulation, but since I'm in VT, I'm concerned about heat loss in fall/perhaps winter. So here are my questions: 1) Is the 2" FB enough insulation, or should I add an additional 2" poured vermiculite base? and 2) If I add the vermiculite, should I put the FB board under the vermiculite or on top?
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  #54  
Old 07-30-2011, 12:27 PM
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Default Re: My Modified Barrel Vault in Texas

Two inches of refractory insulation is enough for all practical purposes. I'm concerned about your granite cooking surface. Granite has the reputation of cracking and spalling in contact with direct flame. Soapstone is the only natural stone that will work as a oven floor, and that stuff is pricey. I'd go with firebrick for your floor.
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Old 07-30-2011, 12:42 PM
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Default Re: My Modified Barrel Vault in Texas

Thanks for the quick reply! I'll try again to attach a picture, but the insulation will be sitting on top of the granite, and then the soapstone (which I am using for a cook surface) will sit on top of the FB board. Your comment about the granite and heat is why I was thinking of adding the vermiculite layer first so that there is no heat issue with the granite. Do you still think the 2" FB board will be enough; even with cold-weather pizza making?
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  #56  
Old 07-30-2011, 08:36 PM
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Default Re: My Modified Barrel Vault in Texas

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Do you still think the 2" FB board will be enough; even with cold-weather pizza making?
Yes. I have 2 1/2 inches of insblock19 and i can cook all winter long. Moisture is more critical in cold weather cooking than excess insulation. The main thing is keeping the insulation you have dry.
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  #57  
Old 08-12-2011, 07:23 PM
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Default Re: My Modified Barrel Vault in Texas

I don't know if Perks1018 is still around, but I am halfway through my barrel vault and am puzzled by his picture 26 (photobucket) which shows the entrance wall to the oven. In this shot, there is a central brick above the square opening of the finished oven that supports the near end of the flue opening, but I can't see anything holding this key brick up!!Other than a hidden steel lintel, I'd like to know if anyone knows of any clever way to support a key brick which sits over the actual oven opening?! I've thought of using pins drilled into the brick on each side, but am concerned that metal in brick will expand and eventually crack the brick that it is meant to support. Any input on this would be greatly appreciated, as I'm ready to build the oven opening but not sure how to do it!
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  #58  
Old 08-13-2011, 12:04 PM
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Default Re: My Modified Barrel Vault in Texas

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I don't know if Perks1018 is still around, but I am halfway through my barrel vault and am puzzled by his picture 26
A link to the picture might help us answer your question.
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  #59  
Old 08-13-2011, 12:32 PM
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Default Re: My Modified Barrel Vault in Texas

Sorry; it's picture 26 at this link:
Pictures by perks1018 - Photobucket

or you can just go to page 4 of this thread and click on the same link.
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Old 08-13-2011, 04:14 PM
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Default Re: My Modified Barrel Vault in Texas

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Originally Posted by luca View Post
Sorry; it's picture 26 at this link:
Pictures by perks1018 - Photobucket

or you can just go to page 4 of this thread and click on the same link.
I should imagine with some expansion movement it would just fall out.

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