Cob fireplace making with cob

[Mike Carter and Carol Cannon]

Does anyone have any actual data on the need for a "refractory interior
lining?"

I have done 2 flues with strawless cob (tested with fire), 2 in progress
with soil cement (cob plus some Portland, not tested) and one with just
plain cob (also not yet tested).  In each case the flue is about 3 feet or
more from the fire source.  So I don't have much data yet - I sure don't
want to retrofit our chimneys and run the risk of condensate between the cob
and the liner.

Mike
>>  I am visualizing a corner fireplace in my barn, wondering whether cob
>>could be used to build around the main clay pipe and bottom area....any
>>thoughts are appreciated.
>
>Especially if there is a refractory interior lining, cob would then make a
>wonderful surround.  I would be sculptural, massive and very sustainable.
>
>Rob
>
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