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[Cob] R-values

phil phawn1 at excite.com
Wed Jan 28 11:14:45 CST 2004


My understanding is that you get one R-value per inch of thickness. You also need to figure in the thermal mass but I'm not sure how and if this is for a building inspectors info they probably wouldn't accept that data anyway.


Phil Hawn, President
The North Carolina Natural Building Coalition
http://naturalbuilder.org
cob, strawbale, cordwood and other sustainable earthbuilding techniques

 --- On Wed 01/28, Mary Lou McFarland < louiethefifth at hotmail.com > wrote:
From: Mary Lou McFarland [mailto: louiethefifth at hotmail.com]
To: Coblist at deatech.com
Date: Wed, 28 Jan 2004 11:02:43 -0600
Subject: [Cob] R-values

Does anybody out there have any info on R-values of cob?  How thick do I <br>need to go to get a really good rating and would the addition of perlite or <br>vermiculite to the mix help in uping the R-value?  In s.w. Iowa it can get <br>cold enough that you can damage your skin after five minutes exposure <br>outside and in the summer it can be 100 degrees with 80% humidity, so I want <br>the best possible R-value.<br><br>_________________________________________________________________<br>Learn how to choose, serve, and enjoy wine at Wine @ MSN. <br>http://wine.msn.com/<br><br><br>_______________________________________________<br>Coblist mailing list<br>Coblist at deatech.com<br>http://www.deatech.com/mailman/listinfo/coblist<br>

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