Cob: Cob insulation idea -Cob Scrap

[lightearth at onebox.com]

Really the whole thing we're doing is much like Cordwood,my biz partner calls it Cob Scrap, but utilizing kiln dried construction cutoffs... really uses SO much less Cob mix then a complete wall and seems to be very strong.

Thanks for the wood R values, any ideas on how to test our custom-made insulation panels would be appreciated.

The insulation 'break' between the inner and outer walls is pretty important here - long, cold, gray winters sometimes..... but the mass on the inside helps to modify the temps....also think thermal mass is really good in floors esp. if radiant.

Marlin


-- 
     Marlin Nissen
   - Outta The Box-
  lightearth at onebox.com
(608) 213-9405  Cell/voicemail




-----Original Message-----
From:     Darel Henman <henman at it.to-be.co.jp>
Sent:     Mon, 16 Dec 2002 16:16:10 +0900
To:       lightearth at onebox.com
Cc:       jwalker at magma.ca; tms at northcoast.com; coblist at deatech.com
Subject:  Cob: Cob insulation idea



lightearth at onebox.com wrote:
> 
> Hey Jen,
> 
> ....,,24 inches of dry wood doesn't present much of a thermal break.

It presents a thermal break of R-val 30.92 for white pine to 31.44 for
spruce or yellow pine.  What does your clay panel R-value per inch?


> We plaster over the whole thing
I though you were putting it between walls.

.. ending up with about a 24 inch wall with thermal mass, insulation (R
value?) and a durable/load bearing wall...
> 
The mass is already there in the cob, it has its own R-value as well.  
Which might not be necessary depending on the area.   For areas with
long cold spells and little sunlight energy this would be good. Earth
does not conduct heat quickly, but it can store and sink a lot.

> Marlin
> --

Darel