#1  
Old 10-02-2013, 03:15 PM
Apprentice
 
Join Date: Jan 2009
Location: saugerties, ny
Posts: 193
Default Perlite to concrete ratio?

Hello all,
Can anyone tell me what the ratio of perlite to concrete is for a hearth? I did mine a few years ago and simply can't remember. I know it's more perlite/ less concrete. 8:1? 5:1? Ok, I'm stabbing in the dark.
Thanks
Kim
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  #2  
Old 10-02-2013, 03:47 PM
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Il Pizzaiolo
 
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Location: South Carolina,USA
Posts: 1,860
Default Re: Perlite to concrete ratio?

5:1 - 8:1 is a good range. More Portland = lower insulating properties.
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Old 10-02-2013, 05:20 PM
Apprentice
 
Join Date: Jan 2009
Location: saugerties, ny
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Default Re: Perlite to concrete ratio?

Thanks. I was working from memory and the big take from this is knowing that there's still some memory to work from.
Kim
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