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-   -   the WRONG perlite (http://www.fornobravo.com/forum/f28/wrong-perlite-17865.html)

JamieC 06-07-2012 09:39 AM

the WRONG perlite
 
A friendly warning: I purchased some Miracle-Gro brand bags of perlite for my insulating concrete layer, mixed it into perlcrete and started applying it when I noticed a strong ammonia smell. Turns out (in very fine print on the bag) the perlite was "enhanced" with fertilizer. I had to rip out my lath down to the insulation blanket to avoid cooking fertilizer between the dome and stucco! Set my progress back 2 days.

Jamie

Tscarborough 06-07-2012 01:04 PM

Re: the WRONG perlite
 
Don't buy ANYTHING that says Miracle grow.

Lburou 06-08-2012 05:31 AM

Re: the WRONG perlite
 
Quote:

Originally Posted by JamieC (Post 132775)
A friendly warning: I purchased some Miracle-Gro brand bags of perlite for my insulating concrete layer, mixed it into perlcrete and started applying it when I noticed a strong ammonia smell. Turns out (in very fine print on the bag) the perlite was "enhanced" with fertilizer. I had to rip out my lath down to the insulation blanket to avoid cooking fertilizer between the dome and stucco! Set my progress back 2 days.

Jamie

Just drop that unusable vermiculite off here on your next trip t Dallas ;)
Sorry for the surprise. I don't like surprises. :)

JamieC 06-08-2012 08:41 AM

Re: the WRONG perlite
 
Sorry, I got so mad at it that I threw away the last batch as well (it was already wet down in the mixing tub). About to mix up another batch and get the insulating concrete on the dome today. If at first you don't succeed ...


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