Tree Roots Blocking Pipes: Effective Pool Area Solutions

Your pool area may look magnificent, but if you are facing frequent drain backups in the vicinity, it can be frustrating. In the Sutherland Shire and southern Sydney, our investigations, utilising advanced camera technology for blocked sewer or stormwater lines near pools, frequently reveal invasive tree roots that have penetrated the joints of older piping systems.

Resolving a blocked pool drain does not always require lifting pavers or excavating your garden. This article explores the causes of these blockages, the techniques we employ to identify them, and how pipe relining offers an effective solution by addressing the problem from within the existing pipe.

What Drainage Systems Lie Beneath Your Backyard Pool?

In many backyard pools across Sydney, the surrounding areas are often adorned with paving, tiles, decking, retaining walls, and garden beds. Beneath this hardscape, you will typically find multiple drainage lines:

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

It is essential to note that the pool’s filtration pipework, which links the pump, filter, skimmer box, and return jets, functions under pressure and is distinct from the drainage systems. This discussion focuses on the drainage lines, which are particularly vulnerable to tree root intrusion.

How Do Tree Roots Cause Blockages in Pool Drains?

Tree roots are naturally attracted to sources of moisture, and even a slight leak at a pipe joint can lure them in. Roots from trees located several metres away can reach out towards a cracked joint in older terracotta, earthenware, or PVC pipes. Once a small root enters, it thrives in the moist environment inside the pipe, collecting waste and debris, which ultimately leads to a blockage.

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

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

What Signs Indicate a Blocked Pool Drain or Stormwater Line?

Stay vigilant for the following indicators 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 emits gurgling sounds when the pool is being backwashed
• Water pools on the pavers or lawn adjacent to the pool

Each of these signs suggests a potential blockage or damage to the pipes underground, and a camera inspection will help us accurately pinpoint the problem.

Why Is Avoiding Excavation Around a Pool Important?

Accessing the drainage around a pool can present significant challenges that often result in damage. Reaching a pipe usually involves lifting travertine or granite pavers, cutting through concrete slabs, or removing garden beds, turf, or decking. After repairing the pipe, restoring the paving and landscaping can be both extensive and costly.

This is why we prefer relining techniques over excavation. In the case highlighted below, relining allowed us to navigate around steep stairs and an established garden without causing any disruption.

Case Study: Successful 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 noises emanating from the back garden
• Water pooling in a tiled corner

Our CCTV drain inspection revealed substantial 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 showcase the situation: the first illustrates the blocked pipe before intervention, while the second depicts the same pipe post-relining.

Instead of suggesting excavation, we executed 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 successfully restored to its optimal flow without disturbing the pavers or garden beds. The entire process was completed in under six hours.

What Steps Are Involved in Pipe Relining Without Excavation?

We employ 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 inner surface, and left 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 that the surrounding pavers and garden remain undisturbed.

Our dedicated team manages every aspect of the relining process, from the initial camera inspection to the final stages, without involving subcontractors. For more details on the procedure, please check our pipe relining Sydney page.

When Is Pipe Relining Not Suitable for Pool Drain Repairs?

Pipe relining works well for pipes that are damaged but retain most of their shape. If a section has collapsed to the extent that a liner cannot be inserted, that segment will need 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 invaded the Sydney Water main rather than your private pipes. In such cases, the responsibility for repairs rests with Sydney Water, and we provide the footage necessary to facilitate the reporting process.

Frequently Asked Questions About Blocked Pool Drains

Can the Drain Pipes Surrounding a Pool Be Relined?

Absolutely. We can reline the sewer and stormwater pipes located beneath pool surrounds, provided the pipes maintain their shape. A camera inspection is performed initially to assess the damage and confirm that a liner can be inserted. If any sections have collapsed or sunk, those areas will require excavation and replacement.

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

We remove the blockage using high-pressure hydro jetting and root-cutting tools. Following this, we inspect the pipe with a CCTV camera. If the camera detects cracked joints or root entry points, we can insert 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 Common Causes of Blocked Drains Around Pools in Sydney?

Tree roots are a major cause we encounter around pools, especially in older terracotta and earthenware pipes. Roots penetrate joints that leak water and continue to grow, trapping 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 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 Typical Duration for 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 time required 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.

Schedule a CCTV Inspection for Your Blocked Drain Near the Pool

We aim to determine 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 notice signs of a blocked drain near your pool, arrange 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.