I live in an area where free sawdust is plentiful and (having no tow mixer) shredding paper is time
consuming and a hassle. So I decided to build my wall with a sawdust/clay slip as my thermal mass
insulation core. I used forms to tamp in the sawdust/clay mix (6.5"). Used an earthen plaster (1.5") on the inside
and a cordwood mortared veneer (5.5") on the outside, all utilizing the philosophy to use what's at hand.
I used a white clay/shredded paper mix to fill in the gable. The thing I love about Natural Building is utilizing
what seems best to use with what you have available. Papercrete, cob, strawbale, earthbags, sawdust, etc...
Picture: sawdust/clay slip core
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