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  #21  
Old 01-19-2013, 08:10 AM
Master Builder
 
Join Date: Oct 2012
Location: Los Angeles
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Default Re: Calcium silicate or ceramic fiber board

Haha, thanks guys, how about if i dont use water, like if i were laying pavers? Im sure it would work, since my floor bricks are tappered the thickness does differ, so i need a good amount of leveling to do.
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  #22  
Old 06-26-2013, 06:07 PM
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Join Date: May 2013
Location: california, los angeles
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Default Re: Calcium silicate or ceramic fiber board

I already got the Calcium silicate boards ( 2" ). I probably need to mortar them on top of my uneven concrete slab. ( i'm a newbie !! )
Do I need fireclay mortar or regular mortar ( bought too many for the block stand ) ?
Thanks !!
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  #23  
Old 06-27-2013, 12:47 PM
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Default Re: Calcium silicate or ceramic fiber board

There is a product called fix all, its used to even out uneven surfaces like yours, level the surface and dry stack the cal sil
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  #24  
Old 06-27-2013, 01:55 PM
david s's Avatar
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Location: Townsville, Nth Queensland,Australia
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Default Re: Calcium silicate or ceramic fiber board

You can use the sand/clay mix wet or dry.
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  #25  
Old 06-27-2013, 02:22 PM
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Location: Santa Rosa, CA
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Default Re: Calcium silicate or ceramic fiber board

I used concrete self-leveling compound and it worked perfectly! After I dry-stacked the boards I didn't even need to use fireclay under my floor bricks because they were all perfectly level
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  #26  
Old 06-27-2013, 02:26 PM
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Default Re: Calcium silicate or ceramic fiber board

Leveling compound picture here. You can see on either side how uneven the base concrete was.
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Calcium silicate or ceramic fiber board-leveling.jpg  
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  #27  
Old 06-27-2013, 03:25 PM
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Join Date: May 2013
Location: california, los angeles
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Default Re: Calcium silicate or ceramic fiber board

Thanks guys;
Sorry for my ignorance, but where can I get the sand/clay mix ? It's already mixed or I have to do it ?
I know Fix all.
Self leveling compound sound a great solution but I hate to do all the framing again.
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  #28  
Old 06-28-2013, 07:35 AM
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Default Re: Calcium silicate or ceramic fiber board

For the self-leveling compound... it doesn't need much support so you don't need to frame everything again - simply make a small surround kind of like an oversize picture frame. You can pour it very thin - like 1/4 inch.

I've never heard of pre-mixed sand/clay - just mix it up yourself. They sell stuff called "mortar clay" at Home Depot which works fine. I used washed, fine "play sand" (also from HD)
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  #29  
Old 09-09-2013, 02:51 PM
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Join Date: Aug 2013
Location: Virginia
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Default Re: Calcium silicate or ceramic fiber board

Here in VA we have Kyanite mines. Kyanite is a form of aluminum silicate and was used in the insulating tiles of the space shuttle. Kyanite sand is a by-product of mining. It's essentially free (of course there are trucking charges) and is used for any purpose for which sand is used. This makes for a good substitute for fire clay and sand in leveling the floor.

Last edited by mirassou; 09-09-2013 at 02:53 PM.
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