Tree Roots Blocking Pipes: Solutions for Pool Issues

While your pool area may be stunning, you might be dealing with ongoing drainage issues nearby. In the Sutherland Shire and southern Sydney, our camera technology investigations frequently uncover invasive tree roots that have infiltrated the joints of older sewer or stormwater lines adjacent to pools.

Addressing a blocked pool drain often doesn’t necessitate lifting pavers or excavating your garden. This article delves into the causes of blockages, the techniques we utilise to detect them, and how pipe relining provides an effective solution by tackling the problem from within the pipe itself.

What Drainage Systems Exist Beneath Your Backyard Pool?

In many Sydney backyard pools, the surrounding area is typically adorned with paving, tiles, decking, retaining walls, and garden beds. Beneath this hardscape, several drainage lines can be found:

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

It’s important to note 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 is centred on the drainage lines, which are particularly susceptible to tree root intrusion.

How Do Tree Roots Contribute to Pool Drain Blockages?

Tree roots naturally seek out moisture sources, and even a minor leak at a pipe joint can attract them. Roots from trees located several metres away can extend towards a compromised 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 eventually results in a blockage.

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

If you are landscaping around a new pool, consider consulting our guide on tree species that are less likely to cause blocked drains. This guide offers insights on safer trees to plant near pipework.

What Symptoms Indicate a Blocked Pool Drain or Stormwater Line?

Remain alert for these signs around your pool and within your home:

• Pool water drains slowly or overflows during backwashing
• The backwash line spills over
• Water surfaces through a garden drain or grate
• A sink or shower emits gurgling sounds when the pool is being backwashed
• Water accumulates on the pavers or lawn next to the pool

Each of these indicators suggests a potentially blocked or damaged pipe underground, and a camera inspection can accurately identify the issue.

Why Should You Avoid Excavation Around a Pool?

Accessing the drainage around a pool can be a complicated task that often results in damage. Gaining access to a pipe usually involves 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 favour relining methods over excavation. In the case highlighted 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 to us regarding three significant issues 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 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 accompanying images illustrate the situation: the first shows the blocked pipe before intervention, while the second depicts the same pipe after the relining process.

Instead of recommending excavation, we took these 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 optimal flow, without disturbing 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 technique known as cured-in-place pipe relining. A resin-soaked liner is introduced into the damaged section of the pipe, pressed against the interior surface, and allowed to cure, effectively forming 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 the surrounding pavers and garden remain undisturbed.

Our dedicated team manages 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 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 such an extent that a liner cannot be inserted, that part will need excavation and replacement. 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 breached the Sydney Water main rather than your private pipes. In these cases, the responsibility for repairs lies with Sydney Water, and we provide the footage needed to facilitate the reporting process.

Common Questions About Blocked Pool Drains

Can the Drain Pipes Surrounding a Pool Be Relined?

Yes, we can reline the sewer and stormwater pipes located beneath pool surrounds, provided the pipe maintains its shape. A camera inspection is conducted first to evaluate the damage and determine whether a liner can be installed. If any sections have collapsed or sunken, those areas will require excavation and replacement.

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

We utilise high-pressure hydro jetting and root-cutting equipment to clear the blockage. Afterward, we inspect the pipe with a CCTV camera. If the camera identifies cracked joints or entry points for roots, 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 Common Issues Cause Blocked Drains Around Pools in Sydney?

Tree roots are a primary issue 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 can help pinpoint 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 repair responsibilities, the owner must also remove tree roots that invade the junction at the connection point. If our camera reveals that the roots are within the Sydney Water main, the responsibility for repairs falls to 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 mentioned in this article was completed in under six hours, including root clearing and lining of the damaged section. The time required for your drain will depend on the length of the damaged area, the number of joints that need sealing, and the accessibility of the entry point. We will provide you with a timeline after the camera inspection.

Book a CCTV Inspection for Your Blocked Drain Near the Pool

Our goal 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 observe signs of a blocked drain near your pool, arrange a CCTV inspection or contact The Blocked Drain Guys at 0418 408 333. Craig or a member of our team will explain the inspection process and the specific issues we will be looking for.