How to Keep Roots Out of Drain Pipes?

Est. Reading: 4 minutes

The most effective ways to keep roots out of drain pipes are to reline your existing pipes to seal every joint and crack permanently, plant trees well away from underground drainage lines, choose slow-growing or non-invasive plant species near pipe routes, schedule regular CCTV drain inspections every two to three years, and act immediately at the first sign of a slow drain or recurring blockage.

Key takeaways / Quick Answer

  • The most effective prevention is pipe relining. A relined pipe has a smooth, seamless, jointless interior surface that there are no entry points for roots to exploit. It's the only truly permanent solution to root intrusion.
  • Know where your pipes run before you plant. Never plant large or aggressive-rooted trees near underground drainage lines without first knowing the exact pipe routes. A CCTV inspection gives you this information precisely.
  • Choose the right plants for areas near pipes. Opt for ornamental grasses, compact natives, and slow-growing shrubs near drainage lines. Avoid ficus, willows, camphor laurels, large eucalypts, and other species with aggressive root systems.

For Sydney homeowners already dealing with tree roots in drain pipes, professional tree roots removal from pipes is the essential first step, followed by pipe relining to permanently seal the entry points and prevent regrowth. Prevention and early intervention are always far cheaper than dealing with a collapsed pipe or full sewage backup.

9 Ways to Keep Roots Out of Your Drain Pipes

1. Get your pipes relined as your permanent solution

If you want the single most effective thing you can do to keep tree roots out of your drain pipes permanently, it's pipe relining. The process is inserting a resin-coated flexible liner into your existing pipe, inflating it against the pipe walls, and curing it in place to create a brand-new structural pipe within the old one.

2. Know where your pipes run before you plant anything

Before you plant a tree, large shrub, or any plant with an aggressive root system, find out where your underground drainage lines run. You can get a rough idea from your property's drainage plan or have a CCTV drain inspection that shows you the exact route and condition of your pipes, giving you a precise picture of where not to plant.

3. Choose pipe-safe plants and trees

If you love having greenery near your home, the key is choosing species whose root systems are far less likely to cause problems.

Plants with contained, non-invasive root systems that are generally considered pipe-safe include:

  • Ornamental grasses and native grasses
  • Dwarf or compact native shrubs (such as dwarf callistemons, lomandras, and dwarf grevilleas)
  • Annual flower beds and vegetable gardens
  • Small-scale palms (whose fibrous roots rarely cause pipe issues)
  • Slow-growing, compact flowering shrubs like gardenias and camellias
  • Ground covers like native violets, dichondra, and creeping thyme

Plants and trees to avoid near drainage lines include ficus and fig species of all types, willows, poplars, camphor laurels, plane trees, large eucalypts, liquidambars, and large deciduous trees with wide-spreading root systems.

4. Install root barrier systems

Root barriers are physical or chemical barriers installed in the soil to redirect root growth away from underground infrastructure. Chemical barriers using slow-release copper sulphate or similar compounds can be placed in the soil near pipe runs to discourage root growth in that direction. These aren't a permanent fix and require periodic reapplication, but as part of a broader prevention strategy they can be effective.

5. Schedule regular CCTV drain inspections

The most powerful thing about a CCTV drain inspection is that it lets you see developing root intrusion before it becomes a serious problem. Fine root hairs that have recently entered a pipe can be cleared quickly and cheaply when caught early.

Sydney Drain Surgeons provide same-day CCTV drain camera inspections with footage you can review in real time that will give you a definitive picture of what's happening inside your pipes so you can make informed decisions about maintenance and repair.

6. Act at the first sign of a problem

Early-stage root intrusion, caught promptly, can often be addressed with a professional drain clean and a targeted spot reline of the specific entry point. Left for a year or two, the same root intrusion can become a dense mass that causes pipe deformation, partial collapse, or complete blockage requiring far more extensive intervention. Call Sydney Drain Surgeons.

7. Use professional tree root removal from pipes, not DIY methods

DIY root clearing comes with real risks that can make the situation worse. Professional tree root removal from pipes in Sydney, as carried out by Sydney Drain Surgeons, uses high-pressure water jetting guided by CCTV camera inspection. A post-clearing camera inspection confirms the pipe is fully clear and assesses whether any structural repair is needed to prevent regrowth.

8. Consider proactive pipe relining for older homes

If your Sydney home was built before 1980, there is a very strong likelihood that your drainage pipes are approaching or have already exceeded their designed service life. Proactive pipe relining is increasingly popular if you want to get ahead of the problem rather than wait for an emergency. It's the drainage equivalent of replacing a roof before it starts leaking, rather than after the ceiling has come down.

9. Manage irrigation and soil moisture near pipe routes

Tree roots are attracted to moisture, and concentrated irrigation or watering near pipe routes can actually draw root systems toward your drainage infrastructure. Managing irrigation to water away from pipe routes, and ensuring drainage near trees flows away from underground infrastructure, can help reduce this attraction effect over time.

Protect Your Pipes with Sydney Drain Surgeons

Getting your pipes inspected, knowing where they run, choosing the right plants, and relining vulnerable sections before they fail. The second-best time is right now, at the very first sign that something's not draining the way it should.

Sydney Drain Surgeons are ready to help. Whether you need a same-day CCTV inspection to find out what's happening inside your pipes, professional tree root removal from pipes in Sydney, or a permanent pipe relining solution that protects your drainage system for the next 50 years. Our team has the technology, the expertise, and the track record to do it right.

Call us directly at 02 9158 3564, our pipe relining team will hear your concerns.

In this blog

Most Frequently Asked Questions

How long does pipe relining last?
Professional pipe relining typically lasts 20-50 years, with many installations exceeding 50 years when properly maintained.
Is pipe relining cheaper than replacement?
Yes, pipe relining is significantly more affordable than traditional excavation and replacement, often costing 30-50% less when you factor in restoration costs.
How long does the pipe relining process take?
Most pipe relining jobs are completed within one day, though complex projects may require additional time.
Will pipe relining work for my property?
Pipe relining is suitable for most residential and commercial properties. Our CCTV inspection will determine if your pipes are good candidates for relining.
Do you offer warranties on pipe relining Sydney services?
Yes, we provide a lifetime guarantee on all our pipe relining work, plus free drain camera inspections for 2 years.

What types of pipes can be relined ?
Pipes made of any material can be relined including PVC, Copper, Cast Iron, Clay and concrete.

What are the signs of a blocked drain?
The signs of a blocked drain are as follows :
-Foul Smell
-Water overflow
-Gurgling noise
-Slow draining of water
What are the causes of blocked drain?
The most common causes of blocked drains are :
-Tree roots
-Sanitary products
-Oil & Grease
-Mineral, soap or dirt build-up

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