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Mike Lamb

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I ran into this Pyrobar stuff the other day. It was lining the floor beneath a back porch. I did some research and it was a fire proof insulator used around structural members but also  used to build non-bearing walls.  The mortar used for this product probably contains asbestos and workers often cut it with a saw.
Here are some links if anyone is interested:


Edited by Mike Lamb
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