Why roots and old laterals meet
Older sewer laterals were often built from short lengths of vitrified clay pipe with bell joints. Over decades, soil movement and the original joint materials can leave small gaps. Warm, moist air and water seeping from those gaps attract roots, which grow in as fine hairs and then thicken into mats that catch toilet paper and waste.
Neighborhoods around Downtown Fullerton have many mature street and yard trees, and roots can travel well beyond the tree canopy. A lateral that has never given trouble can start backing up as nearby roots reach it.
Signs of root intrusion
- Toilets and floor drains that gurgle or drain slowly at the same time
- Backups that return weeks or months after the line was cleared
- Roots or root fibers pulled out on a drain-clearing cable
- A wet or unusually green patch of lawn along the sewer route
- Slow drains that get worse after heavy use, such as laundry days
Clearing roots versus repairing the pipe
Clearing roots
- Cuts or flushes roots out to restore flow
- Quick and often done when a line is backing up
- Roots usually grow back through the same joints
- Best followed by a camera inspection to see the pipe condition
- May be a reasonable maintenance plan while you budget a repair
Repairing or replacing the pipe
- Seals or replaces the joints the roots use
- Options include sectional replacement, lining or full replacement
- Larger job that may involve digging or trenchless methods
- Reduces repeat backups from the same cause
- Needs planning around permits and property lines; check with the city
A sensible order of work
Restore flow
Have the line cleared so the building can be used again.
Camera the full lateral
See how many joints have roots, whether the pipe is cracked or offset, and what material it is.
Decide on a plan
Weigh periodic clearing against repairing the worst sections or the whole line.
Consider the trees
Before removing or planting trees, ask an arborist and check with the city about street trees; never cut roots of a public tree without asking.
Questions to ask the plumber
- How many joints show roots, and where are they along the line?
- Is the pipe cracked, offset or sagging, or only invaded at the joints?
- How often would clearing likely be needed if I wait on repairs?
- Which repair options fit this line, and which need digging?
Common questions
Will root killer products fix the problem?
Treatments may slow regrowth for some time, but they do not repair the open joints that let roots in. Ask a plumber whether a treatment makes sense for your line and follow product directions carefully.
Is the tree's owner responsible for root damage?
Responsibility questions depend on where the tree and pipe are and on local rules. For street trees and laterals near the sidewalk, check with the City of Fullerton.
Can roots get into plastic sewer pipe?
Modern plastic pipe with sealed joints is far more resistant, though poor joints or damage can still let roots in. Replacing old clay usually reduces the problem.
General information for Downtown Fullerton, not a quote or professional advice. In an emergency, call 911.