The moisture allowed in this crawlspace is trapped in the batted fiberglass insulation and is weighing it down. This leaves gaps in the rim joists, allowing cold air to rise up into the home through the floor in the winter. Dr. Energy Saver's patented CleanSpace® System removes the need for any insulation on the crawlspace ceiling, leaving floors warmer in the winter. This will also keep the wood dry, preventing mold, termites, and allergens from entering into your home.