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Old 08-18-2014, 06:25 PM
Peasant
 
Join Date: Feb 2013
Location: gulf coast of alabama
Posts: 27
Default can the dome arch be mortered to the chimney arch ?

I will be ready to build my chimney archs this week . I`m going to use fired paver bricks [solid red bricks ]for the chimney arches . I plan to use regular morter for the lower parts of the arches and heat stop 50 for the top part where the chimney goes .. I was going to morter the 2 arches togather , but thought I should ask maybe a small seperation would be better then filled across the top with the cermic fiber and stuccoed or even some fiber stuffed in between them .. I have used full sized bricks for my dome arch as I wanted a long entrance way i plan to put an interior door in with a rubber seal when not in use .2 doors better then one .. Rains a lot down here ..
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Old 08-18-2014, 07:16 PM
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Default Re: can the dome arch be mortered to the chimney arch ?

Mine is mortared together - no problems...
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Old 08-20-2014, 08:37 PM
Peasant
 
Join Date: Feb 2013
Location: gulf coast of alabama
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Default Re: can the dome arch be mortered to the chimney arch ?

alrightttty then will do,,,, Have some heat sink 50 left .. I like the idea of a good seal there .. Lots of rain down here .. thanks
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Old 08-20-2014, 09:38 PM
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Default Re: can the dome arch be mortered to the chimney arch ?

Don't worry about the thermal loss - just build a good door and you are golden...
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Old 08-21-2014, 05:56 AM
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Default Re: can the dome arch be mortered to the chimney arch ?

Sorry, but I disagree w/Les. You do get significant heat loss by connecting the arches and the hearth bricks w/out a thermal break. Enough to make a huge difference? Probably not. Think about it. You do all the other work designed to retain heat, then have both your floor and arches sucking the heat right out. You build a door to retain the heat, then have it sucked right out under and around the door. It's a simple thing to do and in fact does make a difference. Personally, knowing what I do now about it, I would never build another oven w/out thermal breaks. But, to each his/her own, I say.
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Old 08-21-2014, 09:55 AM
Peasant
 
Join Date: Jun 2014
Location: Woodside, CA
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Default Re: can the dome arch be mortered to the chimney arch ?

Hello merlyn,

Congrats on finishing the dome and moving on to the outside arches! Here's a thread I started when I was at the same spot you are at now. Lots of feedback on the benefits of a thermal break. I was always leaning towards one, and this was enough to push me over the edge. As far as I'm concerned it took minimal extra effort (if any), and I would certainly do again. Plus, they added customization kinda looks cool. It's one more thing to talk about, heat retention aside.

Find it here: http://www.fornobravo.com/forum/f8/t...ion-20844.html (To Thermal Break or not to Thermal Break? That is the question.)

-J
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Old 08-22-2014, 08:49 AM
Peasant
 
Join Date: Feb 2013
Location: gulf coast of alabama
Posts: 27
Default Re: can the dome arch be mortered to the chimney arch ?

hmm lots to ponder thank you all for your help I can do the heat break I was thinking that tieing the whole thing together would would help stabilize the arches going to put a lot of weight on them......going to use 1/2 bricks for the 2 chimney arches

yes I will build massive columns on the side s .. In fact I`m things of using regular brick for the columns and then filling the void with concrete . maybe even re-bar drilled into the base ..
once again I truly do appreciate all and any comments on the build , I like to over think ,over build, do it once and get on to the next project ..
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Old 08-22-2014, 09:03 AM
Peasant
 
Join Date: Feb 2013
Location: gulf coast of alabama
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Default Re: can the dome arch be mortered to the chimney arch ?

ok so thermal break how about some ceramic blanket in between the 2 arches or would you suggest some other material ????? AS for the floor I extended fire brick out 6 inches beyond the door and on the under side ceramic board out 4 inches .. I plane to tie the fire brick right to a slab of granite for the entrance way .. Thought I would go for it after reading it would be stronger without the tie ..
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Old 08-22-2014, 05:18 PM
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Default Re: can the dome arch be mortered to the chimney arch ?

Convention has one place a simple 1/4" gap between the oven arch (all the way around) and between the oven floor/entryway floor. Some builders leave a floor gap, while others span a 1" gap with stainless tubing or other material. Either way works, but remember not to fill the gap with anything that is exposed and either will break down (IFB, silicone) or be toxic (IFB, rockwool, etc).

I butted my entryway arch against the oven arch on the inside and left a 1/4" gap on the outside between the two arches. This gap, away from the heat of the oven was filled with Inswool refractory caulk. Colin (oasisdm) did it the right way, rebating his entryway arch around the oven arch.

Read through these experts' threads for some heatbreak insight:

Dennis - (deejayo)

http://www.fornobravo.com/forum/atta...-wp_000034.jpg

Russell (utahbeehiver)

http://www.fornobravo.com/forum/f8/w...tah-17761.html (Wood Fired Beehive in Utah)

Colin (oasisdm)

http://www.fornobravo.com/forum/f51/...bee-18249.html (new build in werribee)

HTH,

John
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Old 08-22-2014, 06:18 PM
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Join Date: May 2012
Location: Salt Lake City, Utah
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Default Re: can the dome arch be mortered to the chimney arch ?

Meryl,

I did the same thing as GF, I actually got the idea from him. I used a ceramic fiber rope to stuff in the gap then covered it with a high temp. sealant. But this is only one way of doing things. Does it make a difference, I don't know since I don't have anything to compare too. I just used the knowledge of builders before me and I am sure some new innovation will come along as well.
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