Very odd - he's hauling wood from out of the forest when there's standing dead wood in the shots near the house... also why doesn't he have a wood pile from summer? Surely the wood is frozen hard so super hard to chop and split? I thought you had to chop and split it in the spring? What if there's a storm and you can't go into the forest - you'll freeze without a woodpile.

Also - wooden shutters? What's the point of cellophane when it's dark outside? Just make a shutter and mount it in the evening? Surely that would help?

Also the attic of the cabin is open at both ends, just making a rough screen would mean that there was no airflow and make that space more insulating.