The blog covers issues broadly related to sustainability in Minnesota and the world both from an environmental perspective and from an interpersonal perspective. It also covers issues related to mycology (the study of fungi) with a specific emphasis on the interaction with fungal organisms and buildings.
Infrared imaging helps explain location of fungal growth on exterior wall
Flir One infrared image of exterior wall Feb 2017 - N. Carlson
The blue and purple colored areas are colder than the yellow and red areas on this infrared photo taken with a FLIR One infrared camera attached to a Samsung cellphone.
Dark areas of mold growth on an exterior sheetrock wall.
The space was used to store books and other materials. The interior relative humidity was measured at 46%. This allowed for condensation on the metal roof deck and for the equilibrium relative humidity on the sheetock over the metal studs to be greater than 70%.