1/20/25 Cleaned all underground ductwork and furnace box in preparation of trenchless spincast mortar. 1/29/25 Applied trenchless spincast mortar to all underground ductwork. Repaired furnace box and all register vents with trenchless spincast mortar as well. 1/30 applied duct armor product to all underground duct work, air duct registers, and plenum box. 2/6/25 Applied second application of duct armor to all underground ductwork and furnace box.