A televised duct inspection of the ducts under the slab floor revealed that the concrete rectangular chases are separated from the floor. This gap could allow radon to enter the home, making it unsafe to use spray lining for sealing. Since the spray lining can't effectively fill the gap, we suggest rerouting the ductwork overhead to ensure proper sealing and prevent potential radon exposure. Keywords: televised duct inspection, slab floor ducts, concrete ducts, radon prevention, overhead ductwork, spray lining gaps.