Tree Roots Blocking Pipes: Effective Pool Area Solutions

Your pool area may look magnificent, but you could be facing ongoing drain backups nearby. In the Sutherland Shire and southern Sydney, our investigations utilising advanced camera technology in blocked sewer or stormwater lines adjacent to pools frequently reveal invasive tree roots that have penetrated the joints of aging pipework.

Resolving a blocked pool drain doesn’t always require lifting pavers or digging up your garden. This article explores the causes of blockages, the techniques we employ to locate them, and how pipe relining offers a reliable solution by repairing the damage internally within the pipe.

What Types of Drainage Systems Exist Beneath Your Backyard Pool?

In many Sydney backyard pools, the surrounding area is often paved, tiled, or decked, with the addition of retaining walls and garden beds. Beneath this hardscape, several drainage lines are typically present:

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

It is essential to recognise that the pool’s filtration pipework, which connects the pump, filter, skimmer box, and return jets, operates under pressure and differs from the drainage systems. This discussion is focused 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 moisture sources, and even a small leak at a pipe joint can entice them. Roots from trees situated several metres away can reach out toward a fractured joint in older terracotta, earthenware, or PVC pipes. Once a tiny root gains entry, it flourishes in the moist environment within the pipe, accumulating waste and debris, ultimately leading to a blockage.

When a drain near the pool becomes blocked, backwash water has nowhere to go, which may result in 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 checking our guide on suitable tree species to plant to prevent blocked drains. This guide provides information on tree varieties that are safer to position near pipework.

What Signs Indicate a Blocked Pool Drain or Stormwater Line?

Be on the lookout 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 bubbles up through a garden drain or grate
• A sink or shower produces gurgling sounds when the pool is being 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 will help us accurately identify the problem.

Why Is It Best to Avoid Excavation Around a Pool?

Gaining access to drainage around a pool can be a challenging task that often results in damage. Reaching a pipe typically involves lifting travertine or granite pavers, cutting through concrete slabs or retaining edges, or removing garden beds, turf, or decking. Once the pipe has been repaired, restoring the paving and landscaping can be extensive and costly.

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

Case Study: Successful Pipe Relining Solutions Near a Pool in Sutherland Shire

A homeowner in the Sutherland Shire contacted us regarding three significant concerns 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 extensive 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 below illustrate the situation: the first shows the blocked pipe before intervention, while the second depicts the same pipe after the relining process.

Instead of suggesting 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 function, with no disruption to the pavers or garden beds. The entire process was completed in under six hours.

What Is the Process for Pipe Relining Without Excavation?

We use a technique called cured-in-place pipe relining. A resin-soaked liner is inserted into the damaged section of the pipe, pressed against the interior surface, and left 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 manages every aspect of the relining process, from the initial camera inspection to the final stages, without the involvement of subcontractors. For further information on the procedure, please visit our pipe relining Sydney page.

When Is Pipe Relining Not Suitable for Pool Drain Repairs?

Pipe relining is effective 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, resulting in stagnant water, which requires reinstallation of the pipe at the correct slope.

Occasionally, our camera inspections reveal that roots have infiltrated the Sydney Water main rather than your private pipes. In these cases, responsibility for repairs falls to 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 situated beneath pool surrounds, provided the pipe retains its shape. A camera inspection is carried out first to assess 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 Techniques Are Used to Resolve a Blocked Pool Drain Without Digging?

We clear the blockage 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 Common Factors Cause Blocked Drains Around Pools in Sydney?

Tree roots are a primary cause we encounter around pools, particularly in older terracotta and earthenware pipes. Roots penetrate 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 clear tree roots that invade the junction at the connection point. If our camera footage reveals 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.

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, which included root clearing and lining of the damaged section. The timeframe for your drain will depend on the length of the damaged area, the number of joints requiring sealing, and the accessibility of the entry point. We will provide you with a timeline after the camera inspection.

Schedule 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 show you the camera footage before commencing any work.

If you notice signs of a blocked drain near your pool, book 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.