11/3/25 Cleaned all underground ductwork in preparation for trenchless spincast mortar. 11/4/25 Applied trenchless spincast mortar to all underground ductwork connections and elbows. Repaired register vents and furnace box with trenchless spincast mortar. 11/5/25 Applied first application of duct armor to all underground ductwork and furnace boxes. 11/17/25 Applied second application of duct armor to all underground ductwork and furnace boxes.