A vented crawl space is a type of crawl space with openings or vents along the exterior walls to allow outdoor air to circulate underneath the home. This ventilation is intended to reduce moisture buildup by promoting airflow. However, in humid climates, vented crawl spaces can allow excess moisture, leading to mold, wood rot, and pest infestations. Proper grading, vapor barriers, and insulation are often needed to mitigate these risks and maintain the space’s functionality.