Cob: RE: Re: Temperatures

[Darel Henman]

Well, technically, the R-value is for the wood itself.  The overall
R-value would have to consider the wall's mortar area's R-value, which
would be less.  A cob mortar would thermally be better than a cement one
and would probably (get along with the wood better) in terms of
expansion and contraction.  Somebody out there, I think was going to
experiment with cob and coordwood.  What were the results?

Darel

andrea arnold wrote:
> 
> in response to conversation and comments of Darel and
> Graham's email:
> 
> cordwood, when insulated has insulation values of
> about 22-24, which I think is similar to straw bale
> perhaps?  Cordwood can be mortared w/cob instead of a
> cement based mortar.  Cordwood is popular in eastern
> Canada so that should tell you it's a good for cold
> climates.  check out cordwoodmasonry.com or books by
> Rob Roy.
> 
> -Andrea
> 
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