Cob/Fibrous Cement plaster

[John Schinnerer]

Aloha,

> -----Original Message-----
> From:	Don Stephens [SMTP:dsteph at tincan.tincan.org]
	>...Still it might just be a good "brown-coat" for low-R stuff like
cob in
	>colder climates - put up the cob with short sticks projecting to
tie into
	>the F/C stucco, slap on several layers of F/C to build up 8" - 10"
of it
	>and then finish stucco, for a wall with a high mass, an R-value of
~ 20,
	>and 0 infiltration! I wonder.... 

	I'd want to be sure it breathes enough to keep the cob happy - cob
needs to breathe or it will be slowly destroyed by trapped moisture, which
is why cement-based plasters don't work with cob.  FC might have the same
problem (depending on breathability - haven't heard anything about that
yet), especially a thick coat, and for sure if cement stucco was used as a
finish coat.

	John Schinnerer