Tree Roots in Your Sewer: Why It Happens & What to Do
Tree roots are the single biggest cause of repeat drain blockages across Brisbane and Logan. If you're clearing the same drain more than once a year, roots are almost certainly the reason.
Why Roots Get In
Older Brisbane sewer laterals are earthenware or vitrified clay with mortar joints. Every joint is a moisture beacon. Once a hairline root finds it, the root swells and cracks the pipe further.
Warning Signs
Gurgling toilets, slow bath drainage, and sewer smells outside near your inspection point are all early indicators. Repeated blockages within 6–12 months confirm it.
Treatment Options
1) High-pressure jetting with a root-cutting nozzle clears the immediate blockage. 2) CCTV inspection confirms the location and pipe condition. 3) Options are then targeted root-inhibiting foam, sectional pipe relining, or full replacement.
Frequently Asked Questions
Are jacaranda roots the worst?
Jacaranda, camphor laurel, and Moreton Bay fig are Brisbane's most aggressive sewer offenders.
Can I keep the tree?
Often yes — pipe relining seals the pipe from the inside, so roots can't re-enter without cutting the whole line.