[GSBN] Anyone ever try a cob/straw-clay hybrid?

[Chris Magwood]

My concern would be drying for the straw/clay. We have a hard time 
getting straw/clay to dry in our warm but humid summer. We count on a 
week per inch of wall thickness, and that's with both sides of the wall 
exposed. Sometimes we have to help things along with a fan on the 
interior because the drying is slower in the still air. With one side of 
the straw/clay up against cob (which may still be drying itself?) I 
would worry about the straw/clay not drying out at all before it starts 
to get mushy in there.

What about double wythe cob with a dry insulation in between?

Chris

On 13-04-29 11:38 AM, Bruce King wrote:
>
> A client in North Carolina (mixed climate, no earthquakes) wants to 
> build a large assembly structure on load-bearing cob, which doesn't 
> insulate too well.  He doesn't want to use bales with thick earthen 
> plaster, either.
>
> So our idea was to build a wall that would look like this, from inside 
> to out:
>
> 14" -- 18" of load-bearing cob
> 8" -- 12" of light straw-clay
> lime plaster
>
> Has anyone already done this, or heard of it?  Any reports of comments?
>
> Thank you!
>
> Bruce King
>
> (415) 987-7271
> Skype: brucekingokok
> Twitter: @brucekinggreen
> http://www.housetalkgreen.com
> http://bruce-king.com/
>
>
>
>
>
>
>
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-- 
Chris Magwood
Director, Endeavour Centre
www.endeavourcentre.org

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