Tree Roots Blocking Pipes: Solutions for Pool Issues

Your pool area may look stunning, but persistent drain backups nearby can be a significant issue. In the Sutherland Shire and southern Sydney, our advanced camera technology investigations into blocked sewer or stormwater lines adjacent to pools often uncover invasive tree roots infiltrating the joints of ageing pipework.

Fixing a blocked pool drain doesn’t always necessitate lifting pavers or digging up your garden. This article delves into the causes of blockages, the methods we use to identify them, and how pipe relining provides a practical solution by repairing the issue from within the pipe itself.

What Drainage Systems Exist Beneath Your Backyard Pool?

In many backyard pools throughout Sydney, the surrounding area is typically covered with paving, tiles, decking, retaining walls, and garden beds. Underneath this hardscape, you can often find several drainage lines:

• The household sewer line
• Stormwater drainage systems originating from the roof, paving, and pool surroundings
• The pool backwash line
• Overflow drains and subsoil drains

It is important to understand that the pool’s filtration pipework, which connects the pump, filter, skimmer box, and return jets, operates under pressure and is distinct from the drainage systems. This discussion centres on the drainage lines, which are especially susceptible to tree root intrusion.

How Do Tree Roots Cause Blockages in Pool Drains?

Tree roots instinctively search for moisture, and even a small leak at a pipe joint can attract them. Roots from trees located several metres away can extend towards a cracked joint in older terracotta, earthenware, or PVC pipes. Once a tiny root breaches the pipe, it thrives in the moist environment, gathering waste and debris until a blockage forms.

When a drain near the pool becomes blocked, backwash water cannot drain away, potentially leading to flooding on the pool deck. If the blockage occurs within the sewer line, it can cause backups in showers, toilets, and floor wastes inside the house.

If you are landscaping around a new pool, consider consulting our guide on suitable tree species to plant in order to avoid blocked drains. This guide outlines trees that are safer to position near pipework.

What Signs Indicate a Blocked Pool Drain or Stormwater Line?

Pay attention to the following indicators around your pool and inside your home:

• Pool water drains slowly or backs up during backwashing
• The backwash line overflows
• Water bubbles up through a garden drain or grate
• A sink or shower makes gurgling sounds while the pool is being backwashed
• Water pools on the pavers or lawn adjacent to the pool

Each of these signs suggests a potentially blocked or damaged pipe underground, and a camera inspection will help us accurately determine the issue.

Why Should You Steer Clear of Excavation Around a Pool?

Accessing the drainage around a pool can prove challenging and often leads to damage. Reaching a pipe generally necessitates lifting travertine or granite pavers, cutting through concrete slabs or retaining walls, or removing garden beds, turf, or decking. Once the pipe is repaired, restoring the paving and landscaping can be extensive and costly.

This is why we prefer relining methods over excavation. In the case highlighted below, relining allowed us to navigate around steep stairs and an established garden without causing disruption.

Case Study: Effective Pipe Relining Solutions Near a Pool in Sutherland Shire

A homeowner in the Sutherland Shire reached out to us regarding three significant issues in their backyard:

• A blocked stormwater line adjacent to their in-ground pool
• Gurgling noises coming from the back garden
• Water pooling in a tiled corner

Our CCTV drain inspection uncovered substantial root intrusion from a nearby tree, cracks in an old earthenware line, and multiple blocked junctions located approximately three metres beneath the pavers.

The accompanying images depict the situation: the first shows the blocked pipe before intervention, while the second illustrates the same pipe following the relining procedure.

Instead of suggesting excavation, we followed these steps:

1. We cleared the line using high-pressure hydro jetting and root-cutting tools.
2. We installed a resin liner throughout the damaged section to seal the cracked junctions and joints.

The stormwater line was restored to optimal flow without any disturbance to the pavers or garden beds. The entire process was completed in under six hours.

What Is the Pipe Relining Process Without Excavation?

We utilise a method known as cured-in-place pipe relining. A resin-soaked liner is inserted into the damaged section of the pipe, pressed against the interior surface, and allowed to cure, effectively creating a new pipe inside the old one. This technique seals any cracks, leaking joints, and entry points exploited by tree roots. We access the pipe through an existing entry point, such as an inspection opening, ensuring that the surrounding pavers and garden remain undisturbed.

Our dedicated team manages every phase of the relining process, from the initial camera inspection through to the final steps, without involving subcontractors. For further details on the procedure, please visit our pipe relining Sydney page.

When Is Pipe Relining Not Appropriate for Pool Drain Repairs?

Pipe relining is effective for pipes that are damaged but still maintain most of their shape. If a section has collapsed so severely that a liner cannot be inserted, that portion will need excavation and replacement. Similarly, if a section has sunk and lost its gradient, the liner will follow the dip, resulting in stagnant water, which necessitates reinstallation of the pipe at the correct slope.

Occasionally, our camera inspections reveal that roots have penetrated the Sydney Water main rather than your private pipes. In these instances, the responsibility for repairs falls to Sydney Water, and we provide the footage necessary to facilitate the reporting process.

Common Questions About Blocked Pool Drains

Can the Drain Pipes Surrounding a Pool Be Relined?

Definitely. We can reline both the sewer and stormwater pipes located beneath pool surrounds, provided the pipe retains its shape. An initial camera inspection is conducted to evaluate the damage and confirm that a liner can be installed. If any sections have collapsed or sunk, those areas will need excavation and replacement.

What Methods Are Utilised to Clear a Blocked Pool Drain Without Excavation?

We clear the blockage with high-pressure hydro jetting and root-cutting tools. Afterward, we inspect the pipe with a CCTV camera. If the camera reveals cracked joints or root entry points, we can install a resin liner from within the pipe through an existing access point. This repair effectively seals the damage without the need to lift pavers, cut slabs, or disturb the garden.

What Common Causes Lead to Blocked Drains Around Pools in Sydney?

Tree roots are a primary factor we encounter around pools, particularly in older terracotta and earthenware pipes. Roots penetrate joints that leak water and continue to grow until they trap debris. A camera inspection will help identify the specific cause of the blockage in your drain.

Who Is Accountable for Removing Tree Roots from a Sewer Pipe in Sydney?

The property owner is responsible for their own pipes. According to Sydney Water’s guidelines on repair responsibilities, the owner is also required to clear tree roots that invade the junction at the connection point. If our camera footage reveals that the roots are within the Sydney Water main, the responsibility for repairs lies with Sydney Water, and we will provide the necessary footage to report it.

How Long Does Pipe Relining Take Near a Pool?

The relining project in Sutherland Shire, discussed in this article, was completed in under six hours, which included root clearing and lining of the damaged section. The duration for your drain will depend on the length of the damaged area, the number of joints requiring sealing, and the accessibility of the entry point. We will provide you with a timeline following the camera inspection.

Book a CCTV Inspection for Your Blocked Drain Near the Pool

Our aim is to identify a method for repairing the drain from within the pipe before considering excavation, and we will show you the camera footage prior to commencing any work.

If you notice signs of a blocked drain near your pool, arrange a CCTV inspection or contact The Blocked Drain Guys at 0418 408 333. Craig or one of our team members will explain the inspection process and what we will be examining.