Insulated Footings: Thermal Break for Monolithic Domes
Joey is taping off the area just above where they intend to spray foam to avoid getting any overspray on the airform. They have dug a trench around the footing about 10 inches deep that will be insulated.
The footing has been properly insulated. Now the workers will backfill around the base to protect and cover up the foam.
Mike is spraying foam all the way around the dome at the point where the airform is attached to the footing, and about 8 to 10 inches below.