Ductwork video camera inspection service visit. Televised ducts under slab floor. Ducts are concrete ducts with metal fitting and connections that are very rusted allowing sand to enter the system. Suggest sin cast mortaring the metal fittings then spray lining the system with Duct Armor duct lining material.
We’re doing a sewer lining from outside clean out to city main sewer. No more roots = no more backup...