How Tree Roots Affect Pipes and Why Relining is a Solution

Picture of By Dan Murray

By Dan Murray

Master Plumber

A grey PVC pipe cut open to reveal it is completely packed full of thick brown tree roots, resting outdoors on a concrete ledge.
Picture of By Dan Murray

By Dan Murray

Master Plumber

Why Tree Roots Target Pipes

If you’ve noticed slow drains or recurring blockages, there’s a good chance tree roots are to blame. Roots naturally seek out moisture and nutrients, and your underground pipes are a perfect source. Even the smallest crack or joint in an old clay or concrete pipe can release vapour that attracts nearby roots.

Once they find that opening, roots start to grow inside the pipe. Over time, they thicken and spread, catching debris and blocking the flow of water. Eventually, this can cause backups, unpleasant smells, or even burst pipes if left untreated.

Signs That Tree Roots Might Be in Your Pipes

You don’t always see the damage straight away. In most cases, the signs show up slowly:

  • Drains taking longer than usual to empty
  • Gurgling sounds coming from toilets or sinks
  • Frequent blockages, even after cleaning
  • Patches of darker green or damp grass above your pipes

If you’re dealing with any of these symptoms, it’s worth getting your plumbing inspected before things get worse.

What Happens if You Ignore the Problem

What Happens if You Ignore the Problem

Leaving roots to grow unchecked can cause serious damage. The longer they stay inside the pipe, the more they spread and the more pressure they create. Eventually, the pipe may collapse or break apart completely. Repairs at that point usually mean excavation and replacement, which is messy, time-consuming, and expensive.

Catching it early means you can often avoid digging altogether.

Pipe Relining: The Modern Fix

Pipe relining is a practical, long-lasting way to repair damaged pipes without having to dig up your yard. Instead of replacing the entire pipe, a new lining is installed inside the existing one. It seals cracks, blocks root entry points, and restores flow.

How Pipe Relining Works

Here’s what typically happens:

1. Inspection: A camera is sent into the pipe to locate and assess the damage.
2. Cleaning: High-pressure water jets clear out the roots and debris.
3. Relining: A flexible liner coated with resin is inserted and inflated to fit snugly inside the pipe.
4. Curing: The resin hardens, forming a smooth, solid inner layer that’s as strong as a new pipe.

The process usually takes just a few hours, depending on the length and condition of your pipes.

Why It’s a Smart Solution

Relining seals off cracks and joints that roots use to get in, creating a barrier that prevents future intrusion. It also strengthens your existing pipe structure and improves flow thanks to the smooth inner surface. Best of all, it’s trenchless, so there’s no need to tear up driveways or gardens.

Preventing Future Root Problems

Preventing Future Root Problems

While relining keeps roots out, prevention still matters. A bit of maintenance now can save a lot of trouble later.

Here are a few simple tips:

  • Keep large trees and shrubs away from sewer lines.
  • Schedule regular CCTV drain inspections, especially if your property has older pipes.
  • Avoid flushing wipes, food scraps, or fats that can encourage blockages.

Speak to Green Planet Plumbing

At Green Planet Plumbing, we’ve seen what tree roots can do to a drainage system, and we know how to fix it. Our team uses advanced relining technology to repair your pipes quickly, cleanly, and with minimal disruption.

If you suspect roots are causing problems or want to prevent future damage, give us a call. We’re local, we know Newcastle’s conditions, and we’ll give you honest advice on what’s best for your property.

About the Author

Picture of Dan Murray

Dan Murray

Master Plumber at Green Planet Plumbing

Dan Murray is a licensed Master Plumber and the founder of Green Planet Plumbing, serving the Hunter Valley and surrounding regions. With years of hands-on experience in residential and commercial plumbing, Dan leads a team committed to honest, reliable, and eco-friendly plumbing solutions.