Nowadays houses must be draft-free and air tight. We used to place foam strips between the logs, this took care of the draft but it was not fully air-tight. Today we take a more rigorous approach: we completely wrap the house in an air-tight foil. Damp-open, but air-tight. We started wrapping yesterday, at the same time we are placing the main beams on the roof. These are maybe a little over-dimensioned, 60 kilos each, fully laminated, they will never bend.
Some beams were extra thick, and 160 kilo each. We needed a crane for those beams.