I Pulled a Fist-Sized Tube of Roots Out of a Pipe in Balgowlah

A fig tree, a clay pipe, and a fist-sized root ball

I got called to a property in Balgowlah last month where the drains had been slow for weeks. There's a massive fig tree in the backyard — beautiful thing, must be fifty years old. The owners didn't want to believe it could be the tree. But when we ran the CCTV inspection, the screen lit up with a solid tube of root intrusion as thick as my fist.

That fig tree had found a hairline crack in a 50-year-old clay pipe junction and sent roots in. By the time they called us, the roots had filled the pipe entirely. There was no water getting through at all.

"I had no idea roots could do that," the owner said. Most people don't. But when a tree root finds moisture in a sewer pipe, it grows. And it keeps growing until the pipe is packed solid.

How roots get in and what they do

• Roots seek moisture and nutrients — a sewer pipe carrying warm wastewater is an irresistible target
• They enter through pipe joints or cracks — even a microscopic gap is enough for a fine root hair
• Once inside, the root expands into a dense mat that catches toilet paper, grease, and debris
• The blockage grows thicker over time and eventually blocks the pipe completely
• Unlike a simple clog, root blockages are alive and will grow back after clearing unless the pipe is repaired

What stops them for good

• Hydro-jetting — a high-pressure water jetter blasts roots out. It clears the blockage fast but the roots grow back within 12-18 months
• Root foaming — a copper-based foam kills the root tips inside the pipe without harming the tree. Delays regrowth by 2-3 years
• Pipe relining — a structural epoxy liner inside the old pipe seals every crack and joint. Roots can't get back in. This is the only permanent fix and comes with a 50-year design life
• Tree removal or root barriers — for extreme cases where the tree is directly over the pipe

In Balgowlah, Seaforth, and Mosman, where established gardens and mature trees are part of the landscape, we see root intrusion every week. Those original clay pipes from the 50s and 60s are prime targets. The permanent answer is always the same: seal the pipe with a liner and the roots stay out.

The honest truth

If you have recurring blocked drains and mature trees near your sewer line, the chances are high that roots are the cause. A CCTV inspection will tell us for sure. If it is roots, I'll show you the footage and explain every option — from a quick clear-out to permanent relining — with fixed pricing. No pressure, no guesswork.

Think tree roots are blocking your drains?

I'll CCTV inspect your drains and give you a clear diagnosis. Upfront pricing, same-day service across the Northern Beaches.

Book an inspection 1300 758 623

Frequently asked questions

Will root cutting damage the tree?

Mechanical root cutting inside the pipe removes only the roots that have entered the pipe — typically less than 5% of the tree root system. It does not harm the tree above ground. Root foaming targets only the root tips inside the pipe and is safe for the tree.

How do I know if tree roots are causing my drain blockages?

Recurring blockages in the same location — especially if you have large trees near your sewer line — strongly suggest root intrusion. Seasonal blockages (worse in spring when root growth peaks) are another sign. A CCTV inspection will confirm whether roots are present and show the pipe condition.

Does home insurance cover tree root damage to drains?

Most Australian home insurance policies cover the cost of clearing a blocked drain (including root cutting) but do not cover repairing the pipe itself. Pipe relining or replacement is typically considered a maintenance responsibility. Some policies have optional sewer line coverage — check with your insurer.

How much does pipe relining cost on the Northern Beaches?

Pipe relining costs typically range from $4,000-8,000 for a standard residential sewer line (10-20 metres), depending on pipe diameter, number of junctions, and access. This is roughly half the cost of excavation and replacement and comes with a 50-year warranty.