Cleaned all underground ductwork and furnace box in preparation of trenchless spincast mortar. 1/13 Applied trenchless spincast mortar to all cardboard airducts. Repaired furnace box and register vents using mortar as well. 1/17/25 Applied first application of duct armor to all underground ductwork and furnace box. 1/23/25 Applied second application of duct armor to all underground ductwork and furnace box.