How roots get in
Clay sewer pipe is laid in short sections joined end to end. Cast iron corrodes and can crack over time. Either way, small openings let a little moisture and warmth escape, and tree roots grow toward it. Once inside, fine roots form a mat that catches paper and grease.
The first sign is often slow drains or gurgling. Left alone, the mat thickens until wastewater cannot pass and backs up into the lowest drain in the house.
How a root problem usually progresses
- Early
- Fine roots enter a joint. Drains seem normal or slightly slow.
- Months later
- Roots thicken and catch debris. Gurgling and slow drains become regular.
- Blockage
- Water backs up, often after heavy use such as laundry or guests.
- After clearing
- Roots are cut, but those left in the joint can grow back.
- Long term
- Repeated root intrusion can widen cracks or displace pipe sections.
Clearing roots versus fixing the pipe
Cut and maintain
- A cable cutter or jetter clears roots from inside
- Restores flow quickly in an emergency
- Roots usually return over time
- Reasonable when the pipe is otherwise sound
Repair or replace the section
- Options can include spot repair, lining or replacement
- Seals the joint so roots cannot re-enter
- Trenchless methods may limit digging depending on the pipe
- Permits and the city's rules may apply; check with the city
What a camera inspection should show you
Questions to ask after the inspection
- Can I have a copy of the camera footage with distances marked?
- Is the pipe structurally sound apart from the roots?
- Would lining work here, or is the pipe too damaged?
- Which part of the lateral is my responsibility? I will confirm with the city.
- Is a permit required for the repair you are recommending?
Common questions
Should I remove the tree?
Not necessarily. Fixing the pipe joints often solves the problem. Consult an arborist before removing a tree, and check whether city rules apply to street trees.
Do root-killing products work?
Some homeowners use them as maintenance, but they do not repair the gap that let roots in. Ask a plumber whether they suit your pipe.
Is a root blockage an emergency?
When sewage is backing up, yes. Stop using water and call a licensed plumber to clear the line.
General information for Fullerton, not a quote or professional advice. In an emergency, call 911.