Customer has large root intrusion near cleanout that is causing clogs. Recommend performing repair to remove root intrusion and to install new two way cleanout Upon exposing sewer main cleanout we came across several issues. Customer has an old backflow system installed that had failed. The lid was off and flapper was broken inside of sewer main. This was allowing roots to enter the system and the flapper was also leading to clog. Removed this section and old cleanout and plumbed in new double sweep cleanout. We also noticed the existing 4” cast iron leading under the home was in very poor condition with a large crack on top of the pipe. Was able to dig back and expose pipe to find end of the crack to connect to. But eventually the rest of this cast iron pipe will need to be replaced.