Why it matters to the pipes
Roots do not usually break sound pipe on their own. Instead, they find tiny gaps at joints, especially in clay tile and older concrete laterals, where a little vapour escapes. Fine hair roots slip through and, fed by nutrients inside, grow into dense mats that catch paper and debris. The result is a slow drain that becomes a blocked one, often at an inconvenient moment.
Willows, silver maples and poplars are known for aggressive roots, but almost any large tree near a drain can contribute. Many Etobicoke neighbourhoods were planted generations ago, so their trees and their sewer laterals have grown old together.
Have to hand
- A flashlight and a bucket
- Old towels and a pair of gloves
- The way to the main valve
Put the tools down if
- Water will not stop at the valve
- Sewage rises in a floor drain
- You smell gas near the heater
The steps, in order
- Notice the signs. Gurgling toilets, a slow basement floor drain, or backups that recur every few months, often after periods of growth.
- Get the line cleared. A cutting head on a drain machine removes the roots so water flows again.
- Look inside. A camera inspection shows where roots enter and how damaged the pipe is.
- Choose a lasting fix. Options range from periodic maintenance clearing to spot repair, lining or replacement.
- Plan planting. When adding new trees, keep them well away from the drain route.
Common missteps
- Dumping root-killer down the drain before anyone knows what shape the pipe is in. Dead roots still block, and cracked pipe stays cracked.
- Clearing the line repeatedly without ever inspecting it.
- Removing a healthy tree before confirming it is the actual cause.
- Installing a backwater valve on a pipe that roots have already broken. Our page on backwater valve installation explains why we inspect first.
A seasonal pattern
Root problems often follow the calendar. Growth surges in late spring and summer, and slow drains tend to appear then or in early autumn. If your house has needed clearing around the same time for a few years running, scheduling maintenance before that window, rather than waiting for a backup, keeps the basement dry and the household calm. A short record of when each clearing happened makes the pattern easy to spot.
When to ring for help
Call at the first sign of slow drainage across several fixtures, and without delay if the basement floor drain starts filling. A blocked main can send wastewater into the house quickly. After clearing, ask for a camera look so you understand what you are dealing with and can plan instead of reacting.
Roots are only part of the story. Many blockages are helped along by what goes down the drain in the first place, which our guide on what not to pour down drains covers in practical detail.