#1  
Old 08-12-2013, 11:49 AM
Serf
 
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Location: Orlando
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Default Vermiculite or Perlite?

Hi, I'm about to start building the heart and I would like to know if is any difference between the two.
Thanks.
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  #2  
Old 08-13-2013, 01:08 PM
david s's Avatar
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Default Re: Vermiculite or Perlite?

Perlite is a better insulator although once you add cement the difference is marginal. I prefer vermiculite to mix because it mixes up better than perlite and doesn't contain that fine irritating dust that perlite does. I find a 50/50 mix of vermiculite and perlite makes up a more workable mix than either of them alone.
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Old 08-13-2013, 05:00 PM
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Default Re: Vermiculite or Perlite?

Quote:
Originally Posted by david s View Post
Perlite is a better insulator although once you add cement the difference is marginal. I prefer vermiculite to mix because it mixes up better than perlite and doesn't contain that fine irritating dust that perlite does. I find a 50/50 mix of vermiculite and perlite makes up a more workable mix than either of them alone.
Thanks!
I found both in a plant nursery, and I think I will go for a 50/50mix.
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Old 08-14-2013, 05:44 PM
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Default Re: Vermiculite or Perlite?

Quote:
although once you add cement the difference is marginal.
To do the heart, I thought I was supposed to mix the perlite with concrete, now I'm confused
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Old 08-14-2013, 08:19 PM
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Default Re: Vermiculite or Perlite?

Quote:
Originally Posted by martin_80x View Post
To do the heart, I thought I was supposed to mix the perlite with concrete, now I'm confused
Cement is the grey powdery stuff. Concrete is a mix of cement, sand and aggregate
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  #6  
Old 08-15-2013, 07:22 AM
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Post Re: Vermiculite or Perlite?

you want portland cement for your mix-Type 1. you can get it at home depot/lowes.

Mix it in large pans or wheelbarrow at about 6:1 (vemi/per to portland) I will have to look at the water required, but enough to make it sticky like oatmeal is how i did it. HTH

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  #7  
Old 08-16-2013, 07:46 AM
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Default Re: Vermiculite or Perlite?

I found perlite to be half the cost of vermiculite. YMMV
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