Cleaned all deteriorated underground duct work. Applied trenchless cast mortar to all underground duct work to give pipe a strong structure.
Cleaned and restructured all the underground duct work under a slab home. Then applied two applications of our duct lining product to seal and encapsulate all the underground duct work.
Cleaned sand and debris from all underground ductwork. Applied spin cast mortar to underground ducts to give them a strong structure.
Video inspection of underground air ducts. Ducts are concrete possibly Transite with asbestos with metal couplings and fittings. Metal fitting and the plenum under the furnace are heavily rusted and deteriorated. Suggest restoring structure black to fittings by spin cast mortaring a new concrete pipe in those areas. After the structure has been restored the system should be spray lined with Duct Armor duct lining material.