Roots in old cast iron pipes with a slab foundation

[Hunter Woolsey]

I have a rental property in East Texas, the plumber is over there every couple months cleaning roots out of the cast iron pipes. They have sent a camera down the pipes and its not too bad, maybe only 2 or 3 places. Has anyone ever had to go down this road? If so did you tunnel under the slab and replace the cast iron with PVC, Jack hammer the concrete up and replace the pipe, or send a sleeve or liner down the pipe to coat it? Or possibly another option I'm not aware of. I appreciate any feedback.

Hunter