Has anyone looked into this as a hearth insulation?

It is a mineral wool insulation block. I found this data sheet

http://www.dispro.com/upload/D1178.pdf

The rep at the local refractory supply mentioned it as a possible alternative to ceramic fiber board (which is what I am assuming SuperIsol is, I am having a bit of a tough time finding specs on it.)

For refractory cement he recommended Sparcast 30L, its a 3,000°F conventional castable that comes in 50# bags. It seems like overkill, but it is much cheeper than HeatStop from the fireplace supplier.

I am learning way more than I thought I needed to know about refractory products.

Thanks all for your input.

DAN

It is a mineral wool insulation block. I found this data sheet

http://www.dispro.com/upload/D1178.pdf

The rep at the local refractory supply mentioned it as a possible alternative to ceramic fiber board (which is what I am assuming SuperIsol is, I am having a bit of a tough time finding specs on it.)

For refractory cement he recommended Sparcast 30L, its a 3,000°F conventional castable that comes in 50# bags. It seems like overkill, but it is much cheeper than HeatStop from the fireplace supplier.

I am learning way more than I thought I needed to know about refractory products.

Thanks all for your input.

DAN

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