Tree Roots Blocking Pipes: Solutions for Pool Issues

Your pool area might boast an impressive appearance, yet persistent drainage challenges could be lurking nearby. In the Sutherland Shire and southern Sydney, our advanced camera technology often uncovers invasive tree roots that have infiltrated the joints of aging sewer or stormwater lines situated close to pools.

Addressing a blocked pool drain does not necessarily entail lifting pavers or excavating your garden. This article delves into the underlying causes of these blockages, the methods we use to identify them, and how pipe relining provides an effective solution by repairing the issue from within the pipe.

What Drainage Systems Are Present Beneath Your Backyard Pool?

In many Sydney backyard pools, the surrounding areas are typically enhanced with paving, tiles, decking, retaining walls, and garden beds. Beneath this hardscape, a network of drainage lines is present, generally comprising:

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

It is important to understand that the pool’s filtration system—which includes the pump, filter, skimmer box, and return jets—operates under pressure and is distinct from the drainage systems. This discussion focuses on the drainage lines, which are particularly susceptible to tree root infiltration.

How Do Tree Roots Lead to Blocked Pool Drains?

Tree roots are drawn to moisture, and even a minor leak at a pipe joint can attract them. Roots from trees several metres away can extend towards a cracked joint in older terracotta, earthenware, or PVC pipes. Once a small root gains entry, it thrives in the moist environment inside the pipe, accumulating waste and debris, which ultimately causes 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 can cause showers, toilets, and floor drains inside the home to back up.

If you are landscaping around a new pool, consider consulting our guide on appropriate tree species to plant. This will help you avoid blocked drains by recommending trees that are safer to position near piping.

What Symptoms Indicate a Blocked Pool Drain or Stormwater Line?

Be attentive to the following 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 produces gurgling sounds when the pool is backwashed
• Water accumulates on the pavers or lawn adjacent to the pool

Each of these symptoms points to a potentially blocked or damaged pipe underground, and a camera inspection can help us accurately identify the issue.

Why Is Excavation Around Your Pool Best Avoided?

Accessing the drainage around a pool can be a complex task that often results in damage. Typically, reaching a pipe involves 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 a lengthy and costly process.

For this reason, we favour relining methods over excavation. In the example below, relining enabled us to work 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 regarding three significant issues in their backyard:

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

Our CCTV drain inspection unveiled substantial root intrusion from a nearby tree, cracks in an old earthenware line, and multiple blocked junctions located approximately 3 metres beneath the pavers.

The images provided illustrate the situation: the first shows the blocked pipe before intervention, while the second displays the same pipe after relining.

Rather than recommending excavation, we implemented the following steps:

1. We cleared the line using high-pressure hydro jetting and root-cutting techniques.
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 disturbing the pavers or garden beds. The entire process was completed in under six hours.

What Does the Pipe Relining Process Involve 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 allowed 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 oversees every phase of the relining process, from the initial camera inspection to the final stages, without subcontractors. For further details about the procedure, please visit our pipe relining Sydney page.

When Is Pipe Relining Not an Option 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 point where a liner cannot be inserted, that portion will require excavation and replacement. if a section has settled and lost its gradient, the liner will follow the dip, resulting in stagnant water, necessitating 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 instances, the responsibility for repairs falls to Sydney Water, and we provide the necessary footage to facilitate the reporting process.

Common Questions Regarding Blocked Pool Drains

Can We Re-Line Drain Pipes Surrounding a Pool?

Certainly. We can reline the sewer and stormwater pipes located beneath pool surrounds, as long as the pipe retains its shape. A camera inspection will be conducted first to evaluate the damage and confirm that a liner can be installed. If any sections are collapsed or settled, those areas will need excavation and replacement.

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

We eliminate blockages 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 Causes Lead to Blocked Drains Around Pools in Sydney?

Tree roots are a primary culprit 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 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 must also remove 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 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 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 goal is to determine a method for repairing the drain from within the pipe before considering excavation. We will share the camera footage with you prior to commencing any work.

If you observe signs of a blocked drain near your pool, organise a CCTV inspection or contact The Blocked Drain Guys at 0418 408 333. Craig or another team member will explain the inspection process and what we will be looking for.