Cob: RE: Re: lime in cob

[Patrick Newberry]

I add lime to all of my finish plasters and have not had a problem with "dusty" top 
surfaces, or at least relative to those walls without lime in the finish plaster.

Pat 

-----Original Message-----
From: Charmaine R Taylor [mailto:tms at northcoast.com]
Sent: Wednesday, April 17, 2002 11:47 AM
To: Gabriel Everhart
Cc: coblist at deatech.com
Subject: Cob: Re: lime in cob


Then why do some cobbers add lime to the mix?  wouldn't that negatively
affect the bonding ability?  -Gabriel Everhart



No Gabe,,,it stops the bonds to WATER swelling/cracking, NOT bonding to
itself.  And lime in cob will make a low level, harder "cement" than
clay alone- often called stabilized.   Lime in clay may cause "dusty"
top surfaces I have heard...but I have not used it in finish plasters so
I can't say.

anyone have results to report?

and PS my email on clay sizes was packed with typos--I am so sorry- I
have GOT to run spell check!!

 Charmaine  Taylor/ Taylor Publishing
http://www.dirtcheapbuilder.com
http://www.papercrete.com
PO Box 375, Cutten CA 95534
707-441-1632