Effective Solutions for Pools: Tree Roots Blocking Pipes

Your pool area may appear stunning, yet you might be dealing with ongoing drain blockages in its vicinity. In the Sutherland Shire and southern Sydney, our investigations frequently uncover invasive tree roots penetrating older pipe joints when we utilise camera technology to inspect blocked sewer or stormwater lines located near pools.

Addressing a blocked pool drain does not always necessitate the removal of pavers or extensive excavation of your garden. This article delves into the root causes of such blockages, the methods we employ for detection, and how pipe relining provides an efficient solution by repairing the issue internally within the pipe.

What Drainage Systems Are Installed Beneath Your Backyard Pool?

In many Sydney backyard pools, the surrounding areas generally include paving, tiles, decking, retaining walls, and garden beds. Beneath this hardscape, you typically find several essential drainage lines:

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

It is crucial 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 particularly susceptible to tree root intrusion.

How Do Tree Roots Lead to Blockages in Pool Drains?

Tree roots instinctively seek moisture, and even a minor leak at a pipe joint can attract them. Roots from trees located several metres away can extend towards a damaged joint in older terracotta, earthenware, or PVC pipes. Once a small root infiltrates the pipe, it flourishes in the damp environment, capturing waste and debris, ultimately leading to a blockage.

When a drain near the pool becomes blocked, backwash water has no escape, potentially causing flooding on the pool deck. If the blockage occurs within the sewer line, it may lead to backups in showers, toilets, and floor drains inside the home.

If you are landscaping around a new pool, consult our guide on suitable tree species to plant to prevent blocked drains. This guide offers valuable insights into trees that are safer to position near pipework.

What Signs Suggest a Blocked Pool Drain or Stormwater Line?

Be vigilant for 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 emits gurgling noises while the pool is being backwashed
• Water accumulates on the pavers or lawn adjacent to the pool

All these symptoms suggest a potentially blocked or damaged pipe underground, and a camera inspection can assist in accurately identifying the issue.

Why Is Avoiding Excavation Around a Pool Preferable?

Accessing the drainage around a pool can be a complex process that often results in damage. Reaching a pipe typically requires lifting travertine or granite pavers, cutting through concrete slabs or retaining walls, or removing garden beds, turf, or decking. After repairing the pipe, restoring the paving and landscaping can be extensive and costly.

This is why we prefer relining methods over excavation. The example highlighted below illustrates how 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 contacted us regarding three significant issues in their backyard:

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

Our CCTV drain inspection revealed extensive 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 illustrate the situation: the first shows the blocked pipe before intervention, while the second depicts the same pipe after the relining process.

Rather than suggesting excavation, we undertook the following 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 its optimal flow, without disturbing the pavers or garden beds. The entire process was completed in under six hours.

What Is the Process for Pipe Relining Without Excavation?

We utilise a technique 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 left to cure, effectively creating a new pipe within the old one. This method 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 aspect of the relining process, from the initial camera inspection through to the final stages, without subcontractors. For further details on the procedure, please visit our pipe relining Sydney page.

When Is Pipe Relining Not Suitable for Pool Drain Repairs?

Pipe relining is suitable for pipes that are damaged but retain most of their shape. If a section has collapsed to a point where a liner cannot be inserted, that segment will require excavation and replacement. Similarly, if a section has sunk and lost its gradient, the liner will follow the dip, leading to stagnant water, which necessitates the 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 such cases, the responsibility for repairs lies with Sydney Water, and we provide the footage necessary to facilitate the reporting process.

Frequently Asked Questions Regarding Blocked Pool Drains

Can the Drain Pipes Surrounding a Pool Be Relined?

Certainly. We can reline the sewer and stormwater pipes located beneath pool surrounds, provided the pipe maintains its shape. A camera inspection is conducted initially to assess 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 Techniques Are Used to Fix a Blocked Pool Drain Without Excavation?

We clear the blockage using high-pressure hydro jetting and root-cutting tools. Following this, we inspect the pipe with a CCTV camera. If the camera identifies 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 Issues Cause Blocked Drains Around Pools in Sydney?

Tree roots are a primary cause we encounter around pools, particularly in older terracotta and earthenware pipes. Roots penetrate leaking joints 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 Responsible 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 regarding repair responsibilities, the owner must also remove 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 for reporting.

How Long Does Pipe Relining Take Near a Pool?

The relining project in Sutherland Shire, mentioned earlier 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.

Arrange a CCTV Inspection for Your Blocked Drain Near the Pool

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

If you notice signs of a blocked drain near your pool, arrange a CCTV inspection or reach out to 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 looking for.