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  #21  
Old 10-20-2012, 12:04 AM
david s's Avatar
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Location: Townsville, Nth Queensland,Australia
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Default Re: Internal rendering

If the sliding damper fails just use a firebrick tile placed over the top of the chimney. It can be easily adjusted to half or completely closed.
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  #22  
Old 10-20-2012, 01:21 AM
Serf
 
Join Date: Oct 2012
Location: Australia
Posts: 8
Default Re: Internal rendering

Righto.

There are some design faults. They will not be repeated the second time. There is about $200 in materials invested, cost not important.

I have confidence, it may not be perfect, but I think it will be ok.
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  #23  
Old 10-20-2012, 02:07 AM
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Join Date: Jul 2010
Location: Finland
Posts: 152
Default Re: Internal rendering

You could still try to salvage some of the performance. Lift the floor up insert insulation underneath it and put it back. Then insulate dome from outside, the performance should improve a lot.
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  #24  
Old 10-20-2012, 02:05 PM
Serf
 
Join Date: Oct 2012
Location: Australia
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Default Re: Internal rendering

Laku,

I have some Calcium Silicate board coming on monday if thats what you mean?
I am going to lay that in there, and then the fire bricks on top of that.

Im sure that will improve the base, in regard to the dome, well we will wait and see. If its crap, then I will lay the fire blanket over the top, and render it.
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  #25  
Old 10-20-2012, 03:32 PM
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Join Date: Jul 2010
Location: Finland
Posts: 152
Default Re: Internal rendering

That's the stuff you want.

Can't remember what're the insulating properties on Calcium Silicate board but I think the amount wanted was around 2" under the floor?
And you really do want to have a ceramic blanket(or some other insulation) on the dome. It will make the difference on getting the dome cleared or struggling get there.
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  #26  
Old 10-20-2012, 04:10 PM
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Default Re: Internal rendering

Quote:
Originally Posted by 7.62 View Post
Laku,

I have some Calcium Silicate board coming on monday if thats what you mean?
I am going to lay that in there, and then the fire bricks on top of that.

Im sure that will improve the base, in regard to the dome, well we will wait and see. If its crap, then I will lay the fire blanket over the top, and render it.
Great that you wil be putting cal sil under the floor.

Chip
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  #27  
Old 10-20-2012, 10:19 PM
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Default Re: Internal rendering

Quote:
Originally Posted by 7.62 View Post
we will wait and see. If its crap, then I will lay the fire blanket over the top
No need to wait and see as all the experienced oven builders on this forum will tell you to insulate, insulate, insulate.
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