Moisture Diagnostics: Interpreting Moisture Meters, Hygrometers, and Infrared Imaging

https://wool-wiki.win/index.php/Field_Guideline:_Selecting_and_Detailing_Membranes_for_Roofs_and_Decks

Moisture problems in buildings rarely announce themselves with a single obvious sign. Instead they show up as a pattern of damp patches, rising humidity, efflorescence, or spalling concrete over time