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

[Paula Baker-Laporte]

My concern would also be that the straw clay would only be able to dry from
one side and that the cob would add to the moisture content for a long
time...too long to dry the wall out safely.
Building the straw clay wall first and then adding something like adobe to
the interior could work.

Paula

On Mon, Apr 29, 2013 at 10:07 AM, Chris Magwood
<chris at endeavourcentre.org>wrote:

>  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 Centrewww.endeavourcentre.org
>
>
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-- 
Paula Baker-Laporte FAIA,BBP
Econest Architecture Inc.
www.EcoNest.com
paula at econest.com
Phone: 541.488.9508
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