A cantilevered floor sticks out past the wall below it. This building detail allows air to leak in, creating cold or hot floors above and cold or hot ceilings below. Fiberglass insulation is inadequate and can not stop airflow. The Comfenergy Crew removes the old fiberglass insulation and a SilverGlo foam block is installed to block the bay. Polyurethane foam is sprayed over the block and on the bottom of the floor deck to stop all airflow and insulate. This solution results in increased comfort, fewer drafts, and lower energy bills.