[Greenbuilding] experience with Enviroshake?

[Irina Golfman]

Hello Greenbuilders,

I am looking at Enviroshake for my roof (http://www.enviroshake.com/). Has 
anyone had any experience with this product? If it reliable (comes with a 
50 year warranty)? Does anyone know if there are any off-gassing issues 
with this product?

Thank you very much for the wisdom.
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Irina