Cleaned all underground duct work in preparation for spin cast mortar. Need to break up concrete floor near furnace to expose and repipe elbow that is crushed. 2/3/25 Excavated area in laundry room to provide access to ductwork. Applied trenchless spincast mortar to all underground ductwork and furnace box. Repaired register vents with hydraulic cement. Backfilled Excavated area with 3/4" stone and concrete. 2/11/25 applied second application of duct armor product to all underground ductwork, register vents, and plenum box.