An encapsulated crawl space is sealed with a durable vapor barrier covering the ground, walls, and sometimes the ceiling to block moisture, mold, and pests. It often includes sealing vents, insulating walls, and installing a dehumidifier to maintain a dry environment. This approach improves air quality, enhances energy efficiency, and protects the home’s structural integrity. However, it requires proper installation to avoid trapping moisture and regular maintenance to ensure the dehumidifier and seals remain effective.