"Moisture intrusion" refers to the process of water or dampness getting into a place where it shouldn't be. It can cause damage to structures or objects by making them wet or promoting the growth of mold and mildew. Full definition
This important technology can help detect hidden problems including faulty wiring, missing insulation, structural problems, and moisture intrusion problems. (nonprofithomeinspections.org)
The basement is the lowest point of a house, and you have to expect moisture intrusion. (rismedia.com)
Does your home inspector detect hidden moisture intrusion with thermal infrared imaging? (freedomexpressinspections.com)