Homeowner notes
How Tree Roots Get into Sewer Laterals and What to Do
Tree roots seek water and nutrients, and a sewer lateral is a steady source. Once inside, they grow until the line chokes.
- Plain steps a homeowner can follow
- Where the DIY part ends and a plumber takes over
- Ontario and GTA details where they matter
- Plumbing facts, no sales pitch
Diagnosis first, tested after
- Licensed & insured: ask us
- Camera before cutting
- Water-tested repairs
- Booked by phone
How roots get in
Older GTA laterals are often clay tile with joints every few feet. Over decades, joints shift and seals fail. Warm, moist vapour escapes and roots follow it, entering through hairline gaps. Once through, they fan into a fibrous net that snags tissue and solids. Cast iron and even some PVC joints can be invaded if poorly installed.
Signs
- Every drain in the house sluggish at once
- Toilet bowls burping as other fixtures run
- Floor drain backups, often worse in late summer and fall
- Clogs that return a year after clearing
Roots grow back where they were cut. Clearing buys time; it does not end the story.
Treatment options
| Option | What it does |
|---|---|
| Mechanical cutting | Clears roots; regrowth expected |
| Hydro jetting | Cleans walls after cutting |
| Relining | Seals joints from inside |
| Replacement | New PVC with tight joints |
Trees and responsibility
City trees on the boulevard may be the source. In many municipalities, the lateral on public property is the city’s responsibility. A camera with a locator shows where the roots are. Do not remove or damage a tree without checking local tree by-laws.
Next steps
Book a camera inspection, or call (365) 387-8531.
Stop and call a plumber if
- Wet or sunken strip of lawn over the lateral line
- A backup every spring or every few months, like clockwork
- Basement floor drain bubbles or backs up when upstairs toilets flush
Common questions
Do root-killing chemicals work?
Some products are designed for this, but they do not fix the gaps roots used. Check labels and local rules.