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  #111  
Old 05-04-2013, 05:13 PM
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Default Re: 42" build in Virginia

Well, I had a busy day. I added a couple courses of chimney, and now I'm trying to locate some help on trying to seal off the top. Do you think I need to go higher and add another terracotta flue?

42" build in Virginia-how-top-offf.jpg

sorry about the crappy brick work. I started out with one size brick, and then ran out and had to switch to another. both were from a stack that was leftover on my property.
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  #112  
Old 05-04-2013, 05:23 PM
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Default Re: 42" build in Virginia

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Do you think I need to go higher and add another terracotta flue?
Bigger is usually better. I went up 24 inches and it draws pretty well. How high is yours?
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  #113  
Old 05-04-2013, 05:24 PM
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Default Re: 42" build in Virginia

I had some leftover thin stone, was bored, yeah right
so I thought Iwould use some to cover the block

First, I tried a 3:1 mix, that didn't hold worth a damn. Then I google how to adhere thin stone, and they recommended a 2:1 mix. That was better, but still didn't support the stone. Next, I added some acrylic cement bonding enhancer to the mix. That helped, but still not great. So the question is, how do you get real stone to stick to block?

It's almost like I have to do one row at a time, and let it set, and then come back for the next row?
42" build in Virginia-front-chimney.jpg
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42" build in Virginia-finished-chimney-how-top.jpg  
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  #114  
Old 05-04-2013, 05:29 PM
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Default Re: 42" build in Virginia

the height from the vent opening is 24".

my oven sits outside a walk out basement, lower than the side of the house. I do have another 2' flue that I can add, but I'm thinkin, this chimney is plenty big enough. I want to start insulating and stucco the dome so that I can start curing...but then some here I read to cure before I put the blanket and stucco the dome
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  #115  
Old 05-04-2013, 05:49 PM
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Default Re: 42" build in Virginia

The blanket won't hinder your cure. I personally would wait until the mortar has all the water driven out before I covered it with stucco.
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  #116  
Old 05-04-2013, 06:21 PM
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Default Re: 42" build in Virginia

I am somewhat perplexed on how to close off the top of the chimney. I was thinking of filling the space with v-crete,then a paver brick over the top course of the chimney, and fill the top with concrete.
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  #117  
Old 05-04-2013, 07:41 PM
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Default Re: 42" build in Virginia

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I am somewhat perplexed on how to close off the top of the chimney. I was thinking of filling the space with v-crete,then a paver brick over the top course of the chimney, and fill the top with concrete.
This is how I did it - post 155. You can see the flue under the cover. I recall filling the void ( between liner and brick) with vermiculite/portland until the top. I capped it off w/ high heat mortar.

http://www.fornobravo.com/forum/8/le...d-4207-15.html (Les' Build)
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  #118  
Old 05-04-2013, 10:07 PM
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Default Re: 42" build in Virginia

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So the question is, how do you get real stone to stick to block?

It's almost like I have to do one row at a time, and let it set, and then come back for the next row?
Blue Tac......

Is your sand fatty, ie, has it got lots of clay in it or is it lean and mean stuff?
Fatty sand will make the rock stick like sh1t to a blanket.
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  #119  
Old 05-05-2013, 04:18 AM
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Default Re: 42" build in Virginia

Thanks Les. Your chimney top looks great. The space between the flue liner and the top bricks has a layer of high heat mortor to seal that top? Will that crack? Or is there some other glue I cannot see?

Also, I have some leftover paver bricks, can I use that on the top course rather than the bricks with holes, or do I need to get some regular solid bricks?

I also have some leftover gray pavers I could use as well. Will they bond with mortar?
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  #120  
Old 05-05-2013, 04:20 AM
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Default Re: 42" build in Virginia

Al, what is blue tac?
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