The evidence of poor insulation is revealed by snowfall.

The Scandinavian wall design enables a single piece of insulation (e.g. a fiberglass batt) to be fully inserted into a stud bay without being interrupted - and therefore compromised - by electrical wiring, gang boxes, plumbing and other systems. It also allows a vapor retarder or barrier to be installed continuously, without excessive puncturing, over the studs and insulation. The results are walls that greatly reduce air and moisture migration.