Tree Roots Blocking Pipes: Solutions for Pool Issues

Your pool area may be visually appealing, but persistent drain backups nearby can create significant frustration. In the Sutherland Shire and southern Sydney, our investigations utilising advanced camera technology in blocked sewer or stormwater lines around pools often uncover invasive tree roots that have infiltrated the joints of older pipe systems.

Addressing a blocked pool drain does not always necessitate lifting pavers or excavating your garden. This article delves into the various causes of blockages, the methods we employ for identification, and how pipe relining provides a highly effective internal repair solution.

What Drainage Systems Are Installed Beneath Your Backyard Pool?

In numerous backyard pools throughout Sydney, the surrounding area is often enhanced with paving, tiles, decking, retaining walls, and garden beds. Beneath this hardscape, various drainage lines are typically present:

• The household sewer line
• Stormwater drainage systems that channel water away from the roof, pavement, and pool area
• The pool backwash line
• Overflow drains and subsoil drains

It’s crucial to recognise that the pool’s filtration pipework, which connects the pump, filter, skimmer box, and return jets, functions 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 are instinctively drawn to moisture, and even a minor leak at a pipe joint can attract them. Roots from trees several metres away may extend toward a fractured joint in older terracotta, earthenware, or PVC pipes. Once a small root breaches the pipe, it thrives in the moist environment, capturing waste and debris, which ultimately culminates in a blockage.

When a drain near the pool becomes obstructed, backwash water cannot escape, potentially causing flooding on the pool deck. If the blockage is within the sewer line, it can lead to showers, toilets, and floor drains inside the home backing up.

If you are landscaping around a new pool, we recommend consulting our guide on suitable tree species to plant to avoid blocked drains. This resource offers crucial information on trees that pose less risk to nearby pipework.

What Are the Signs of a Blocked Pool Drain or Stormwater Line?

Be vigilant for the following signs around your pool and within your home:

• Pool water drains slowly or backs up during backwashing
• The backwash line overflows
• Water seeps up through a garden drain or grate
• A sink or shower produces gurgling sounds during pool backwashing
• Water accumulates on the pavers or lawn adjacent to the pool

Each of these indicators suggests a potentially blocked or damaged pipe underground. A camera inspection will assist us in pinpointing the exact issue.

Why Should You Avoid Excavation Around a Pool?

Accessing the drainage around a pool can be a daunting task that often results in damage. Reaching a pipe typically involves lifting travertine or granite pavers, cutting through concrete slabs or retaining walls, or removing garden beds, turf, or decking. Following the repair, restoring the paving and landscaping can be both extensive and expensive.

This is why we favour relining methods over excavation. The case 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 reached out to us with three pressing concerns in their backyard:

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

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

The images below depict the situation: the first shows the blocked pipe before intervention, while the second illustrates the same pipe after the relining process was completed.

Rather than recommending excavation, we took the following steps:

1. We cleared the line using high-pressure hydro jetting and root-cutting equipment.
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 less than six hours.

What Is the Procedure for Pipe Relining 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 inner surface, and allowed 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 aspect of the relining process, from the initial camera inspection to the final stages, without relying on subcontractors. For more information about the process, please visit our pipe relining Sydney page.

When Is Pipe Relining Not Appropriate for Pool Drain Repairs?

Pipe relining is most effective for pipes that are damaged yet maintain most of their shape. If a section has collapsed to the extent that a liner cannot be inserted, that segment will necessitate excavation and replacement. Similarly, if a section has sunk and lost its gradient, the liner will follow the dip, leading to stagnant water, requiring the reinstallation of the pipe at the correct slope.

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

Common Queries Regarding Blocked Pool Drains

Can the Drain Pipes Around a Pool Be Relined?

Certainly. We can reline the sewer and stormwater pipes located beneath pool surrounds, provided the pipes are structurally sound. A camera inspection is performed initially to evaluate the damage and ensure that a liner can be installed. If any sections have collapsed or sunk, those areas will require excavation and replacement.

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

We clear blockages using high-pressure hydro jetting and root-cutting tools. Once cleared, 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 needing to lift pavers, cut slabs, or disturb the garden.

What Are the Common Causes of Blocked Drains Around Pools in Sydney?

Tree roots are a primary cause of blockages we encounter 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 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 clear tree roots that invade the junction at the connection point. If our camera footage indicates 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 in this article was finished in under six hours, including 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.

Book a CCTV Inspection for Your Blocked Drain Near the Pool

Our aim is to determine a repair method from within the pipe before considering excavation, and we will show you the camera footage before 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.