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Old 09-26-2009, 09:49 PM   #1
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lightweight concrete as a finished floor?

I've got a buddy that wants to pour lightweight concrete on his main floor and then acid stain it and seal it as a finished floor.

Does anyone know if this stuff is as hard as regular concrete? I was a little worried that it might not be very hard due to the composition of the product.

Also, does anyone know the difference in weight of this stuff and regular concrete. I don't even know the brand name. "Gypcrete" is ringing a bell but I have no idea if you can buy it at a local hardware store or not.

thanks boys.
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Old 09-26-2009, 09:58 PM   #2
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there is a big difference between the soft, flimsy Gypcrete and real lightweight concrete than can be structural.

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Old 09-27-2009, 06:31 AM   #3
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pay attn to dick - fishing isn't the only thing he knows

you can substitute liteweight aggregates instead of crush'd trap rock or granite to provide a lighter weight conc,,, IF the support's avail for conc, a better solution's to install a cementitious polymer-modified overlay - much lighter per sf AND much easier to decorate/stain/sculpt/carve,, we have it in our family room but i do this stuff for a living.

gyp isn't a finish'd floor surface,,, you won't find anything at an apron store that a pro'd use no matter what the store people tell you.
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Old 09-27-2009, 07:27 AM   #4
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Concrete ~ 145 lb/cuf
LW Concrete ~ 115 lb/cuf
Gypsum Concrete ~ 105 lb/cuf

I wouldn't use nor specify nor install gypcrete as a finished floor, even if the customer asked me to do it.
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