Tree Roots Blocking Pipes: Effective Solutions for Pools

Your pool area may boast an attractive appearance, yet you might be facing persistent drain backups nearby. In the Sutherland Shire and southern Sydney, our investigations using advanced camera technology in blocked sewer or stormwater lines adjacent to pools frequently reveal invasive tree roots that have penetrated the joints of ageing pipework.

Resolving a blocked pool drain doesn’t always require lifting pavers or digging up your garden. This article explores the reasons behind blockages, the techniques we employ to identify them, and how pipe relining offers a practical solution by repairing the issue from within the pipe itself.

What Types of Drainage Systems Are Located Beneath Your Backyard Pool?

In many backyard pools across Sydney, the surrounding area is typically covered with paving, tiles, decking, retaining walls, and garden beds. Beneath this hard landscape, you can often find several drainage lines:

• The household sewer line
• Stormwater drainage systems originating 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 connects the pump, filter, skimmer box, and return jets, operates under pressure and is separate from the drainage systems. This discussion focuses on the drainage lines, which are particularly vulnerable to tree root intrusion.

How Do Tree Roots Contribute to Blockages in Pool Drains?

Tree roots naturally seek out moisture sources, and even a minor leak at a pipe joint can lure them in. Roots from trees located several metres away can extend towards a cracked joint in older terracotta, earthenware, or PVC pipes. Once a small root penetrates, it flourishes in the moist environment inside the pipe, accumulating waste and debris, ultimately resulting 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 wastes inside the house to back up.

If you are landscaping around a new pool, consider consulting our guide on suitable tree species to plant to avoid blocked drains. This guide provides information on trees that are safer to position near pipework.

What Symptoms Indicate 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 bubbles up through a garden drain or grate
• A sink or shower emits gurgling sounds while the pool is being backwashed
• Water collects on the pavers or lawn adjacent to the pool

Each of these symptoms suggests a potentially blocked or damaged pipe underground, and a camera inspection will help us accurately pinpoint the issue.

Why Should You Avoid Excavation Around a Pool?

Gaining access to the drainage around a pool can be a challenging task that often causes damage. Reaching a pipe typically requires lifting travertine or granite pavers, cutting through concrete slabs or retaining edges, 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 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 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 multiple blocked junctions located approximately three metres beneath the pavers.

The accompanying images depict the scenario: the first shows the blocked pipe before intervention, while the second illustrates the same pipe after the relining procedure.

Instead of recommending excavation, we completed 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 optimal flow, with no disturbance to the pavers or garden beds. The entire process was finished in under six hours.

What Is the Process for 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 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 intact.

Our dedicated team oversees every phase of the relining process, from the initial camera inspection through to the final steps, without the involvement of subcontractors. For more information on the procedure, please visit 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 portion will require 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 reinstallation of the pipe at the correct slope.

Sometimes, our camera inspections reveal that roots have infiltrated 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 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 pipe maintains its shape. A camera inspection is conducted initially 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 Excavation?

We eliminate the blockage using high-pressure hydro jetting and root-cutting tools. Afterwards, we inspect the pipe with a CCTV camera. If the camera detects 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 Contribute to 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 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 is also required to 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.

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 duration 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 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 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 one of our team members will explain the inspection process and what we will be examining.