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-   -   Perlite grain size, how much is needed (http://www.fornobravo.com/forum/f8/perlite-grain-size-how-much-needed-19594.html)

Steellearning 06-29-2013 06:45 AM

Perlite grain size, how much is needed
 
I need advice on the recommended perlite grain size for dome insulation.
I'm building a 42 inch dome and would like to know how much is needed for a 4 inch layer? Would 100 ltr be enough?

stonecutter 06-29-2013 07:30 AM

Re: Perlite grain size, how much is needed
 
Try to get agricultural perlite instead of block fill, which is very fine.

Steellearning 06-29-2013 08:35 AM

Re: Perlite grain size, how much is needed
 
Quote:

Originally Posted by stonecutter (Post 156193)
Try to get agricultural perlite instead of block fill, which is very fine.

The company selling perlite here in Norway wants to know the grain size I would like. I'm thinking around 5 mm but thought I'd better check with the forum to make sure?

stonecutter 06-29-2013 12:18 PM

Re: Perlite grain size, how much is needed
 
Had to do the old google conversion...yeah, 5mm will be fine.


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