I am trying to understand how this mortar chinking is going to function in the winter. Its my understanding that mortar has a very low r value.
I have looked through the pics of the student built homes under construction and see sometimes small gaps, some times much larger ones, and I imagine this space filled with mortar. In my climate a winter a temp of -30 or -40 is not uncommon.
The width of mortar between the logs is 4,5 mabey 6 inch's thick at most(correct me if I am wrong, I am only going by the pics).
Isn't this a serious thermal bridge? Do you get condensation on them at such extreams of temp? Arn't they a source of heat loss? has anyone viewed the structure in such extreams with a thermal camera?

John