Tree roots enter joints and collect material in the line.
Why it happens here
Mature landscaping can place roots near buried residential sewer connections. A small opening at a joint gives fine roots a route into the pipe, where they can catch paper and grease. Repeated clearing without checking the joint can leave the entry point untreated.
Our approach
We run the camera past the obstruction when possible and inspect the pipe wall around the root mass. That shows whether the issue is an isolated root entry or a broader defect. We discuss clearing and repair options using the recorded location, not guesswork.