OneMan'sOpinion said "In your replies, you say that you have no trees on your property, so where are the roots coming from? Roots are only an issue on the main line, outside of the footing, but you picture shows a service line between a floor and ceiling. You can see the joist and floor board at the top of the pic, and then a strapped ceiling in the bottom. In the back, there is a 1/2" copper water line, so it is obviously a warm zone. What specifically is plugged / backing up? Hard to offer suggestions when the details are inconsistent. "
Perhaps I shouldn’t have i:ncluded that picture. The city has trees on their property, but we have none. Basically I was asking for recommendations on what firm to use to clear the sewer.