Yes. A sewer camera is one of the most reliable ways to find tree roots inside a drain or sewer line. The push camera travels through the pipe and shows root masses directly on screen, while a 512Hz sonde built into the cable head pinpoints the exact spot on the surface above.
How root intrusions look on camera
Roots enter a pipe through cracks, loose joints, or old clay connections. On camera they usually appear as thin hair like strands at first. Left alone, those strands thicken into a dense mat that can trap paper and grease. A trained eye can often tell fresh growth from an old, previously cut intrusion by color and texture. Fresh roots look pale and moist. Older, repeatedly cleared roots look darker and more fibrous.
The camera also shows where the roots sit relative to the flow line. A single strand near the top of the pipe rarely causes a backup. A mass filling the bottom third of the pipe will slow drainage and catch debris. Some operators note the clock position, like nine o’clock or six o’clock, so the finding can be described precisely later. This detail matters when deciding between a simple root cut and a full line repair.
Where roots typically enter a pipe
Roots follow moisture. Any joint, crack, or fitting that lets water seep out will eventually attract them. Older clay and cast iron lines have more joints than modern PVC, so they intrude more often. Camera footage tends to show clusters at these common points:
- Bell and spigot joints on clay pipe
- Cracked sections from ground shift or old age
- Transitions where two different pipe materials meet
- Lateral connections near large trees or hedges
- Areas where a pipe sags and holds standing water
A camera pass from the cleanout to the main connection usually reveals more than one entry point if the line is old. Homeowners are often surprised to see three or four separate intrusions on a single run, not just the one near the tree they suspected.
What a sewer camera cannot tell you
A camera shows the inside of the pipe, not the soil around it. It cannot confirm which specific tree is responsible, since roots travel far from the trunk in search of water. It also cannot measure how much the roots have already displaced or cracked the pipe wall from outside. Video alone will not tell you whether a joint is simply open or actively separating.
For that reason, a camera inspection is a diagnostic step, not a full structural survey. If the footage shows heavy, repeated intrusion at the same joint, that is a sign of a bigger problem than roots alone. A plumber may recommend a locate and, in some cases, a small excavation to inspect the pipe from outside before choosing a repair method.
Locating the exact root mass with a sonde
Most root problems are found first, then located precisely with a transmitter. A camera head with a built in 512Hz sonde sends a signal that a handheld receiver can trace from the surface. This lets you mark the exact ground position of the root mass, often within a foot or two, without guessing based on distance alone.
Locating matters because root intrusions rarely sit exactly where the counter on the camera reel says they do. Cable can bow slightly inside long runs, and footage counters are not perfectly linear over distance. A sonde reading, cross checked with the counter, gives a much more confident dig or repair spot. This combination, video plus locate, is standard practice for any line with a confirmed root problem.
What to do after roots are confirmed
Once footage confirms roots, the usual next step is mechanical cutting, sometimes followed by a chemical root treatment to slow regrowth. Camera inspection before and after cutting shows whether the line is actually clear or just partially opened. Many owners skip the after check and are surprised when the same clog returns within a year.
Recurring root intrusion at the same joint, even after repeated cutting, usually points to a pipe that needs lining or replacement rather than ongoing maintenance. A self leveling camera head with 17mm to 25mm sizing works well for the pipe diameters most home laterals use, typically 3 to 4 inch, and gives a steady, right side up image through bends where an older fixed head would tumble and confuse the picture. For anyone unsure which head size fits their pipe, the camera head reference on this site walks through the common sizes and matching pipe diameters.
Frequently asked questions
How do you know if roots are in your sewer line?
Slow drains, gurgling toilets, and repeated backups in the same fixture are common warning signs. A camera inspection is the only way to confirm roots directly rather than guessing from symptoms. It also shows how far the intrusion has spread along the line.
Can a sewer camera tell which tree the roots came from?
Not directly. The footage shows where roots enter the pipe, but roots can travel well beyond a tree’s canopy in search of moisture. Matching the intrusion point to a specific tree usually requires comparing the camera locate reading against a property map.
What size camera head is needed to see roots clearly?
For typical 3 to 4 inch residential laterals, a 17mm to 25mm self leveling head gives a clear, upright view through bends. Larger 6 inch mains may call for a bigger head or a pushrod with more rigidity, since a flexible cable can be harder to advance through a heavily rooted section.
Does a sewer camera work if the pipe is full of roots?
A heavily blocked pipe may need a partial cutting pass before the camera can advance past the mass. Once a channel is opened, the camera can usually push through to document the rest of the line. In some cases the inspection is done in two passes, once before clearing and once after, to compare results.