I've found a product called Zonolite. It is vermiculite with an additive that reduces or prevents the vermiculite from absorbing moisture. It is manufactured and sold by GraceConstruction. It is a loose insulation that is used for insulating cement blocks by pouring it into the holes in the cement blocks.
Has anyone else heard of this product and can I use this material and mix it with cement to make the insulated hearth?
If nothing else, I will use it to fill in around the dome. I have been having a problem trying to find bulk vermiculite that is cheap.....
Has anyone else heard of this product and can I use this material and mix it with cement to make the insulated hearth?
If nothing else, I will use it to fill in around the dome. I have been having a problem trying to find bulk vermiculite that is cheap.....
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