Tree Roots Blocking Pipes: Solutions for Pool Issues

While your pool area may appear stunning, you might be dealing with ongoing problems related to drain backups in the vicinity. In Sutherland Shire and southern Sydney, our investigations frequently reveal intrusive tree roots that have penetrated the joints of ageing pipework. We utilise advanced camera technology to inspect blocked sewer or stormwater lines adjacent to pools, identifying these issues with precision.

Addressing a blocked pool drain does not always necessitate the removal of pavers or the excavation of your garden. This article delves into the underlying causes of drain blockages, the techniques we employ to detect them, and how pipe relining serves as an effective solution by repairing the issue from within the pipe itself.

What Drainage Systems Are Found Beneath Your Backyard Pool?

Many backyard pools in Sydney are typically surrounded by paving, tiles, decking, retaining walls, and garden beds. Beneath this hardscape, you will commonly discover several drainage lines:

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

It is crucial to recognise that the pool’s filtration pipework—connecting 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 Create Blockages in Pool Drains?

Tree roots are naturally drawn to moisture sources, and even a minor leak at a pipe joint can entice them. Roots from trees several metres away can extend towards a damaged joint in older terracotta, earthenware, or PVC pipes. Once a small root infiltrates, it thrives in the moist environment within the pipe, accumulating waste and debris, ultimately leading to a blockage.

When a drain near the pool becomes obstructed, backwash water cannot escape, leading to potential flooding on the pool deck. If the blockage occurs within the sewer line, it may cause showers, toilets, and floor drains inside the house to back up.

If you are landscaping around a new pool, we recommend consulting our guide on appropriate tree species to plant to prevent blocked drains. This guide provides insights into trees that are safer to position near pipework.

What Symptoms Suggest a Blocked Pool Drain or Stormwater Line?

Stay alert for these signs around your pool and within 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 collects on the pavers or lawn adjacent to the pool

Each of these symptoms indicates a potentially blocked or damaged pipe underground. A camera inspection will allow us to accurately identify the issue.

Why Should You Avoid Excavation Around a Pool?

Accessing the drainage around a pool presents considerable challenges and often results in damage. Reaching a pipe usually 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 labour-intensive and costly.

This is why we prefer relining methods over excavation. In the case highlighted below, relining enabled 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 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 extensive root intrusion from a nearby tree, cracks in an old earthenware line, and several blocked junctions located approximately 3 metres beneath the pavers.

The accompanying images illustrate the situation: the first shows the blocked pipe prior to intervention, while the second depicts the same pipe after the relining process.

Rather than recommending 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 procedure was completed in under six hours.

What Is the Procedure for Pipe Relining Without Excavation?

We employ a method known as cured-in-place pipe relining. A resin-soaked liner is inserted into the damaged section of the pipe and pressed against the interior surface, then left to cure, effectively creating a new pipe within the old one. This process 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 oversees every stage of the relining process, from the initial camera inspection to the final stages, without involving subcontractors. For further information on the procedure, please visit our pipe relining Sydney page.

When Is Pipe Relining Not Appropriate for Pool Drain Repairs?

Pipe relining is suitable for pipes that are damaged yet retain most of their shape. If a section has collapsed to the extent that 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, necessitating 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 needed to assist in the reporting process.

Common Questions About Blocked Pool Drains

Is It Possible to Reline the Drain Pipes Surrounding a Pool?

Absolutely. We can reline the sewer and stormwater pipes located beneath pool surrounds, provided the pipe retains its shape. A camera inspection is conducted first to evaluate the damage and confirm that a liner can be installed. If any sections have collapsed or sunk, those areas will need to be excavated and replaced.

What Methods Are Utilised to Unblock a Pool Drain Without Excavation?

We eliminate blockages using high-pressure hydro jetting and root-cutting tools. After 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 Are the Primary Causes of Blocked Drains Around Pools in Sydney?

Tree roots are a major cause of blockages around pools, particularly in older terracotta and earthenware pipes. Roots infiltrate joints that leak water and continue to grow until they trap debris. A camera inspection will assist in identifying 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 regarding repair responsibilities, the owner is also required to clear tree roots that invade the junction at the connection point. If our camera footage shows 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.

What Is the Duration of Pipe Relining Near a Pool?

The relining project in Sutherland Shire mentioned 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 needing 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

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

If you observe signs of a blocked drain near your pool, schedule 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 looking for.