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  #121  
Old 07-18-2013, 03:13 AM
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Location: Australia
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Default Re: house brick for stand, quick quetsion

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Originally Posted by Greenman View Post
Assuming that you are going to put a vermicrete layer over it and then stucco/render I wouldn't worry about it. The vermicrete will be the start of the shell and the outer layer will complete the shell. Incorporating a vent to allow any moisture that is trapped between the dome and the outer layers is a good idea.

Close to flame!
i'm using litefill/cement mix, is this what you call vermicrete?
so in short i have 50mm (2 layers) of ceramic blanket, chickenwire on top of it and i'm "rendering" that with litefill/cemet (5:1) then i was thinking of painting or stucco (is this cement render?)
is there better way of weather proofing my igloo?
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  #122  
Old 07-18-2013, 04:36 AM
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Default Re: house brick for stand, quick quetsion

I don't know what lite fill is, but vermiculite or perlite only weigh around a kilo for every ten litres, so see how your stuff compares, as generally the lighter the material is, the better an insulator it will be.If you are using your mix over the blanket it would be better to make it 10:1 as it will insulate way better than 5:1. You don't need strength in this layer, just something firm enough to render onto.
Australians call it render; Americans call it stucco. Same thing.
It is a good idea to let the insulating layer dry, then drive out the moisture completely with the curing fires before doing the render coat(s).

Last edited by david s; 07-18-2013 at 04:39 AM.
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  #123  
Old 07-18-2013, 04:51 AM
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Default Re: house brick for stand, quick quetsion

after reading more on the bag lite fill = perlite
will do all my curing with perlite render only then later on will apply normal render (stucco) or pain it with acrylic as some people done it.
considering that my oven will be exposed to elements is there some sort of elastic render i could use to maintain good seal? also how water proof is perlite/cement at 5:1?
should i keep on covering my oven while curing or once is dry i can leave out in open?
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  #124  
Old 07-18-2013, 05:09 AM
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Default Re: house brick for stand, quick quetsion

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Originally Posted by CrocAu View Post
after reading more on the bag lite fill = perlite
will do all my curing with perlite render only then later on will apply normal render (stucco) or pain it with acrylic as some people done it.
considering that my oven will be exposed to elements is there some sort of elastic render i could use to maintain good seal? also how water proof is perlite/cement at 5:1?
should i keep on covering my oven while curing or once is dry i can leave out in open?
Keep it covered, perlite cement is like a sponge and will absorb a lot of water you should cover new cement mixes for a week to allow them to cure but after that they should be allowed to dry.
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  #125  
Old 07-18-2013, 06:55 AM
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Default Re: house brick for stand, quick quetsion

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Originally Posted by mrchipster View Post
Keep it covered, perlite cement is like a sponge and will absorb a lot of water you should cover new cement mixes for a week to allow them to cure but after that they should be allowed to dry.
does it stay water absorbent after fully dried? in other words if i'm happy with its look after perlite cement is cured and is it safe to leave it out in the open exposed to elements or is this absolute no no?
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  #126  
Old 07-18-2013, 01:59 PM
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Default Re: house brick for stand, quick quetsion

Dry it and cover it if it looks like raining. Until you do the render coating it will just absorb the rain.
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  #127  
Old 07-20-2013, 04:29 AM
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Default Re: house brick for stand, quick quetsion

well sort of finished the oven, I didn't set depth markers so now i'm bit worry i got few low spots with perlite/cement mix around dome so might do extra layer or two next time sun is out.
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  #128  
Old 07-20-2013, 05:07 AM
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Default Re: house brick for stand, quick quetsion

Your flue transition is very clean...nice job.
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  #129  
Old 07-20-2013, 05:46 AM
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Default Re: house brick for stand, quick quetsion

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Originally Posted by stonecutter View Post
Your flue transition is very clean...nice job.
I can't take credit for this, the flue gallery came like this from guy that sells the bricks, mortar, etc... it is made out of castable reinforced with some steel pins i liked the idea behind it and I would say it saved me day of work to get it right so all i did was to put it on bed of mortar and keep it leveled.
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  #130  
Old 07-20-2013, 05:55 AM
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Default Re: house brick for stand, quick quetsion

hope my pro skill at photoshop show what i plan to do

my question is how do i build this up all the way around with extra perlite/cement mix? will it stay put in place on it own or should i put extra chicken wire in place?

hope to get this going tomorrow
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