Tree roots are causing my home's sewer main to back up... Now what?
- Tim Friedrich
- 4 days ago
- 3 min read
Sometimes it starts with a slow drain, other times a sewage back up into your basement. So, you call the plumber, and they perform a camera inspection of your sewer line. That’s when you learn the culprit is tree roots, growing and blocking your main line.
This is one of the most common causes of sewer backups in older Cincinnati homes, and understandably, it brings up a lot of questions. If you’ve got tree roots invading your pipes, here’s what you need to know.
Why are tree roots in my sewer line?
Tree roots naturally seek out moisture, and your sewer line is a steady source. Even small cracks or joints in older clay or cast-iron pipes can release enough vapor to attract roots. Once they find a way in, they grow rapidly, especially in spring and fall when roots are most active.
Over time, they can create blockages that lead to slow drains, gurgling toilets, and eventually a full-on backup.
How do I get rid of tree roots in my sewer line?
There are a few ways to tackle tree roots once they’re in your line:
Hydro jetting - This is one of the most effective methods. It uses high-pressure water to blast the roots out of the pipe. It’s fast, powerful, and doesn’t require digging up your yard.
Root cutting - A rotating mechanical blade is inserted into the pipe to cut the roots back. While this can clear the immediate blockage, roots may grow back if the opening remains.
Chemical treatment - In some cases, plumbers may recommend foaming root-killing agents that inhibit regrowth over time. These are best used after mechanical removal.
Each solution depends on how extensive the root invasion is and what kind of shape your pipe is in.
Will the roots grow back?
They can. If the source of moisture or the entry point into the pipe remains, roots will usually return within a year or two. That’s why regular maintenance is important, especially if your home is in an older neighborhood with mature trees and original sewer lines.
That’s why it’s important to schedule annual cleanings, especially if you’ve had issues with tree roots before.
Do I have to dig up my whole yard?
Not necessarily. If the pipe is severely damaged, excavation may be required to replace a section. But in many cases, hydro jetting or repairs done in a smaller area of the yard might be all you need.
Note: We often get asked about trenchless repair options like pipelining (also called cured-in-place pipe lining). While those are available from other companies, Allied Reddi-Rooter focuses on proven root removal and pipe repair methods that don’t require costly liners or relining.
What can I do to prevent tree root growth in my plumbing?
Here are a few steps homeowners can take:
Know where your sewer line runs before planting trees or shrubs.
Choose tree species with less aggressive roots, especially near sewer lines.
Schedule regular sewer line inspections, especially in older homes.
Consider preventive root treatments if you’ve had issues before.
And when in doubt, call a licensed plumber. At Allied Reddi-Rooter, we’ve been dealing with tree root intrusions for decades and can guide you through the best options for your home.
