9-24-25 Cleaned underground cardboard air ducts. 9-25-25 installed two 5’X6” patch liners on supply line going to the bathroom. Applied spin cast mortar to all underground duct work. Rebuilt plenum box and all registers with mortar. 9/26/25 Applied first application of duct armor to all underground ductwork and furnace box. 10/3/25 Applied second application of duct armor to all underground ductwork and furnace box.