Cob cavity wall insulation

[Eric Hart]

Here's an idea for adding some insulation to a cob cavity wall.  Cordwood
builders like Rob Roy use saw dust with a little bit of lime for
preservation as insulation between the cordwood walls they build.  This
seems like a pretty low impact insulation material that would have better
insulation properties than light clay.  Rob Roy's Earthwood Building School
has a web page at:  
http://www.interlog.com/~ewood

Not too many technical details but a good introduction to cordwood masonry
construction.

Eric D. Hart
Community Eco-design Network
PO Box 6241
Minneapolis, Minnesota  55406  USA
erichart at mtn.org
(612) 306-2326 (voicemail)
http://www.cedn.org