A new way of thinking about your crawl space
 
Science has actually shown us how to build crawl spaces that make homes cleaner, more comfortable, healthier and much more energy efficient. Research has taught us that most homes should have crawl spaces that are encapsulated – not covered with a thin layer of plastic – but sealed with a thicker plastic liner that effectively blocks moisture from the dirt below and doesn’t develop holes under normal wear and tear.
The seams are taped to prevent moisture infiltration. Foundation walls are insulated, keeping conditioned air from escaping the crawl space and hot summer air or cold winter air from getting inside that crawl space. The plastic liner encapsulating the crawl space continues up the foundation walls, effectively sealing out moisture from the dirt below and from the foundation walls.