Televised sewer from outside cleanout approximately 60ft to city main and back into house around 40ft. Sewer has been changed in the house going out and about 7ft downstream of the clean out then is clay up unto the tap at the city main where it changes back to pvc. There are heavy roots growing into many of the joints in the clay tile. Suggest periodic rodding or the installation of a liner to prevent the roots from growing into the pipe in the future.