Cutting tree roots out of Salem sewer laterals

Tree roots do not break into a sound pipe by force. They follow moisture. Warm, damp air leaks from a hairline gap at a clay joint, and the nearest root tip turns toward it, slips through the opening and finds a steady supply of water and nutrients inside. From there it branches into a dense, hair-like mass that catches paper and waste.

Salem is full of mature street and yard trees, and many of its older homes still drain through clay or concrete laterals with a joint every couple of feet. That combination makes root intrusion the classic rooter call in town. Cutting the roots restores the flow; the camera tells you how many joints are open and how bad they are.

What roots do inside a clay sewer joint

Older clay laterals were laid as short bell-and-spigot sections, with the joints packed in mortar or an early sealing compound. Over decades that packing cracks and the soil around it shifts. A root tip enters through the gap and spreads along the bottom of the pipe where water runs.

As the root mass thickens it forces the joint open further, and the next winter of saturated soil lets the section settle out of line. That is how a minor root problem grows into an offset or cracked joint if it is left alone for years.

Root cutting heads and how we use them

A root cutter is a flat, toothed blade or a set of spring-loaded blades that spin at the end of a heavy cable. It is sized close to the inside diameter of the pipe so it shaves roots flush with the wall instead of poking a hole through the middle.

We usually make a first pass with a smaller head to restore flow, then follow with a full-width cutter. When the root mass is heavy, a jetting pass afterward washes out the loose fibers so they do not tangle up again a few feet downstream.

• Small opening blade to get water moving
• Full-diameter cutter to shave roots back to the pipe wall
• Optional jetting pass to flush the cut fibers out
• Camera pass to count and locate the intrusion points

Why roots come back after cutting

Cutting removes the root that is inside the pipe but leaves the opening it used, and the tree on the other side is still alive and still thirsty. Pruned roots often regrow more densely, the way a trimmed hedge fills in. Most root-prone lines need cutting again within one to three years.

The lasting answer is closing the joints, either by repairing the damaged sections or by lining or replacing the lateral. The camera footage from your visit gives you what you need to weigh that decision on your own timeline and budget.

Living with large trees near the sewer line

You do not have to remove a tree you love to keep the sewer working. Many Salem homeowners keep the trees and plan regular root cutting until they are ready to repair the lateral. Knowing where the line runs and which trees sit closest to it makes that plan far easier to manage.

If you are planting, keep new trees, and especially thirsty species like willows and poplars, well away from the path the lateral takes to the street. A short camera locate before planting tells you where that path runs, so the new tree and the old pipe never have to meet.