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  #11  
Old 10-26-2012, 06:57 PM
Peasant
 
Join Date: Oct 2012
Location: colorado
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Default Re: Starting my barrel vault

Is there any reason not to build your chimney just out of brick? I am having trouble locating a usable masonry flue liner and can not figure out how to adapt a steel double wall flue pipe to the top of the brick so I thought I might just build the brick chimney and call it good . Any reason I shouldnt go this route? Thanks.
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  #12  
Old 10-26-2012, 11:49 PM
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Default Re: Starting my barrel vault

Quote:
Originally Posted by jim81147 View Post
Is there any reason not to build your chimney just out of brick?
You have to consider the weight of it all and how you distribute the weight to the base evenly.
Once you have that sorted you are good to go.....
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  #13  
Old 10-27-2012, 01:03 PM
Peasant
 
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Default Re: Starting my barrel vault

Can perlcrete be used as a suitable thermal break or will it crush and stay that way after the first full firing? Thanks.
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  #14  
Old 10-27-2012, 01:38 PM
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Default Re: Starting my barrel vault

Where are you thinking of using the thermal break?
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  #15  
Old 10-27-2012, 04:50 PM
Peasant
 
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Default Re: Starting my barrel vault

You can see the space where it would go in these pics . The middle pic is probably the clearest shot of where the gap is .
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Starting my barrel vault-img_1550.jpg   Starting my barrel vault-img_1557.jpg   Starting my barrel vault-img_1552.jpg  
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  #16  
Old 10-27-2012, 06:26 PM
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Default Re: Starting my barrel vault

It looks to me like you have the front arch sitting on the hearth bricks, if this is so the thermal break wont really work as the heat will still get to the front arch via the hearth bricks.

For a heat break to be effective it must be totally isolated.
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  #17  
Old 10-27-2012, 06:37 PM
Peasant
 
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Default Re: Starting my barrel vault

Al the front arch is on its own platform . The whole front ( red bricks ) at this point is seperated from the hearth . The only portion that I am thinking will be touching will be when I start the chimney . I have not seen a way to isolate that part yet . So what do you think about the perlcrete or is there something better that is readily available ? Thanks.
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  #18  
Old 10-27-2012, 08:08 PM
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Default Re: Starting my barrel vault

Pearlcrete is too crumbly, there is ceramic and fibreglass rope that is available, keep it in place with high temp silastic.

I used insulating fire bricks in my flue for the heat break.
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  #19  
Old 10-27-2012, 09:31 PM
Peasant
 
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Default Re: Starting my barrel vault

Had a chance today to make a little more progress .
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Starting my barrel vault-img_1549.jpg   Starting my barrel vault-img_1553.jpg   Starting my barrel vault-img_1554.jpg   Starting my barrel vault-img_1555.jpg   Starting my barrel vault-img_1560.jpg  

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  #20  
Old 11-04-2012, 03:05 PM
Peasant
 
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Default Re: Starting my barrel vault

my first curing fire woo hoo !!!
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