A round house built of cordwood construction in Ontario's cottage country
Here, cordwood (short lengths of debarked trees) are laid crosswise with a mixture of mortar and insulating materials - such as sawdust or paper sludge - in between. Of course, the longer the logs, the better the insulation qualities.
Believe it or not, there are remains of cordwood buildings buildings in Greece and Siberia that date back a millennium so this is not a new idea.
Closer view of roof and chimney
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