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  #41  
Old 05-29-2013, 08:08 AM
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Default Re: house brick for stand, quick quetsion

thanks again everyone
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  #42  
Old 05-29-2013, 11:29 PM
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Default Re: house brick for stand, quick quetsion

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Originally Posted by CrocAu View Post
we call it yellow tongue
It looks like it, if it is the top surface is completely waterproof for 3 months out in the weather, if its orange tongue oil it firkst.
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  #43  
Old 05-30-2013, 02:02 AM
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Default Re: house brick for stand, quick quetsion

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Originally Posted by brickie in oz View Post
It looks like it, if it is the top surface is completely waterproof for 3 months out in the weather, if its orange tongue oil it firkst.
are you saying I should worry about the baking paper then?

EDIT: weather stopped me today but I did get the main part of the outer frame done so need one day with good weather to finish this

btw I got some spare rebar and my base is little larger then most from what I seen should I add 2 extra members ? what is normal spacing 300mm?

Last edited by CrocAu; 05-30-2013 at 02:05 AM.
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  #44  
Old 05-30-2013, 02:24 AM
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Default Re: house brick for stand, quick quetsion

Just spray it with oil or wd40 to be on the safe side.
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  #45  
Old 05-30-2013, 04:45 AM
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Default Re: house brick for stand, quick quetsion

If you are planning an igloo oven and it will be out in the weather, rather than screeding the slab off level it is a good idea to mound the supporting slab up slightly in the middle so that there is a slight slope to the outside. This prevents (to a certain extent) water from accumulating under the insulation.if you are building a doghouse style or the whole oven is covered with a roof, then screening it level is sufficient. The insulation layer sitting on top of the supporting slab should then be made flat to take the floor.
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  #46  
Old 05-30-2013, 05:15 AM
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Thumbs up Re: house brick for stand, quick quetsion

Gudday
Yellow tongue .... Your good to go ! I built mine out of an old chipboard cupboard . Made sure that I cut it so the biggest piece would fit out the entrance. Made sure the "cuts " were suported . Gaffa taped those cuts, oiled it ,pored the slab. A week later, cawled in pulled the supports and the pieces out the underside slab was as smooth as silk.
Regards dave
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  #47  
Old 05-30-2013, 05:41 AM
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Default Re: house brick for stand, quick quetsion

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Originally Posted by david s View Post
If you are planning an igloo oven and it will be out in the weather, rather than screeding the slab off level it is a good idea to mound the supporting slab up slightly in the middle so that there is a slight slope to the outside. This prevents (to a certain extent) water from accumulating under the insulation.if you are building a doghouse style or the whole oven is covered with a roof, then screening it level is sufficient. The insulation layer sitting on top of the supporting slab should then be made flat to take the floor.
I'm building igloo but I wont have layer of insulation concrete.
was going to put 50mm calcium silicate boards as insulation instead.
bad idea?
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  #48  
Old 05-30-2013, 01:11 PM
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Default Re: house brick for stand, quick quetsion

No, that's a good idea. The Cal sil board is dry at least and you won't have to worry about eliminating extra water. If you do mound up your supporting slab, then mortar your insulation in place so it's level.
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  #49  
Old 05-31-2013, 04:57 AM
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Default Re: house brick for stand, quick quetsion

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Originally Posted by david s View Post
No, that's a good idea. The Cal sil board is dry at least and you won't have to worry about eliminating extra water. If you do mound up your supporting slab, then mortar your insulation in place so it's level.
can you please put some more light on what you said for me please.

you said calsil is dry and I don't have to worry about eliminating extra water but then you say to mound up my slab and mortar calsil in place?

I was going to do my slab as flat and level as possible but your post indicates that it is bad idea?

was under impression that if my slab is level and flat then I can place calsil directly on it without any mortar? wrong again?

EDIT: lucky i'm slow this way I get to confirm last bits
my progress today, finished frame, blocked holes, installed baking paper and put my rebar

speaking of rebar I ended up with 16mm there is few spots that have about 35mm concrete space left under them is this something to worry about or i'm ok with that?

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Last edited by CrocAu; 05-31-2013 at 05:02 AM.
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  #50  
Old 05-31-2013, 06:01 AM
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Default Re: house brick for stand, quick quetsion

If rain runs off your outer igloo shell and onto the supporting slab, any tiny crack where it meets that slab can allow water to enter under the insulation. if you make the slab such that the water would have to travel uphill it will help prevent getting your insulation wet from the weather.
Driving the water out of vermicrete is removing the water you have to add when mixing the stuff. As the calsil board is already dry you don't have to worry about drying it out, but you don't want the weather to enter and get it wet.
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