We are cleaning all the underground duct work in the slab home which is transite pipe with metal fittings, the weak rusted fittings are allowing the sand backfill to enter the duct and blow up into the home, so after we clean we are applying our trenchless cast mortar to all metal fittings to restructure the fitting and also applying two applications of our duct lining material to the entire underground duct work system leaving a nice clean air flow up into the home!
Televised ducts under slab floor. Ducts are concrete with metal couplings. Metal is slightly rusted and allowing sand to enter system at the joints. Suggest spin cast mortar then spray lining ducts with Duct Armor duct lining material.
Video inspection of under slab air ducts because of reduced air flow in front part of house. There is a blockage with the pipe collapsed reducing the flow of air. The pipe needs to be dug up and replaced with a new pipe. The rest of the system should be spray lined with Duct Armor Duct lining material.