Building science – sudden seasonal change in basement humidity

All winter long, my basement was extremely dry, even drier than the rest of the house. Very suddenly, my basement became very humid and the dehumidifier is running again. Same… All winter long, my basement was extremely dry, even drier than the rest of the house. Very suddenly, my basement became very humid and the dehumidifier is running again. Same…Read MoreGreenBuildingAdvisor