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-   -   Vermiculite or Perlite? (http://www.fornobravo.com/forum/f6/vermiculite-perlite-19779.html)

martin_80x 08-12-2013 11:49 AM

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.

david s 08-13-2013 01:08 PM

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.

martin_80x 08-13-2013 05:00 PM

Re: Vermiculite or Perlite?
 
Quote:

Originally Posted by david s (Post 159370)
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.

martin_80x 08-14-2013 05:44 PM

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 :confused:

david s 08-14-2013 08:19 PM

Re: Vermiculite or Perlite?
 
Quote:

Originally Posted by martin_80x (Post 159484)
To do the heart, I thought I was supposed to mix the perlite with concrete, now I'm confused :confused:

Cement is the grey powdery stuff. Concrete is a mix of cement, sand and aggregate

texman 08-15-2013 07:22 AM

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

Texman

Calisdad 08-16-2013 07:46 AM

Re: Vermiculite or Perlite?
 
I found perlite to be half the cost of vermiculite. YMMV


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