Your pool area may be stunning, but ongoing drain blockages can create significant inconvenience. In the Sutherland Shire and southern Sydney, our investigations with cutting-edge camera technology in blocked sewer or stormwater lines near pools often uncover invasive tree roots that have breached the joints of older pipes.
Fixing a blocked pool drain doesn’t always require lifting pavers or digging up your garden. This article delves into the various causes of blockages, the methods we employ to detect them, and how pipe relining provides an effective solution by repairing issues from within the pipe.
What Drainage Systems Lie Beneath Your Pool?
Many backyard pools in Sydney feature an array of hardscaping elements such as paving, tiles, decking, retaining walls, and garden beds. Beneath these surfaces, you will typically find several drainage systems:
- The household sewer line
- Stormwater drainage systems originating from the roof, paving, and pool area
- The pool backwash line
- Overflow drains and subsoil drains
It’s vital to understand that the pool’s filtration pipework—including the pump, filter, skimmer box, and return jets—operates under pressure and is distinct from the drainage systems. This article focuses specifically on the drainage lines, which are particularly susceptible to tree root intrusion.
How Do Tree Roots Lead to Pool Drain Blockages?
Tree roots instinctively seek moisture, and even the smallest leak at a pipe joint can attract them. Roots from trees located several metres away can stretch towards a crack in older terracotta, earthenware, or PVC pipes. Once a small root penetrates, it thrives in the damp environment inside the pipe, gathering waste and debris, which ultimately results in a blockage.
When a drain near the pool becomes blocked, backwash water cannot escape, which may lead to flooding on the pool deck. If the blockage occurs within the sewer line, it can disrupt the functionality of showers, toilets, and floor drains inside the house.
If you are landscaping around a new pool, consider consulting our guide on tree species that are less likely to cause blocked drains. This resource offers valuable insights into safer tree options to plant near pipework.
What Signs Suggest a Blocked Pool Drain or Stormwater Line?
Stay alert for these 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 noises when the pool is being backwashed
- Water accumulates on the pavers or lawn near the pool
Each of these signs points to a potentially blocked or damaged pipe underground, and a camera inspection will allow us to pinpoint the issue accurately.
Why Is Excavation Around a Pool Best Avoided?
Accessing drainage around a pool can be quite challenging and often results in damage. Reaching 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 both extensive and costly.
This is why we prefer relining methods over excavation. In the situation highlighted below, relining enabled us to navigate 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 next to their in-ground pool
- Gurgling sounds coming from the back garden
- Water pooling in a tiled corner
Our CCTV drain inspection uncovered extensive root intrusion from a nearby tree, cracks in an old earthenware line, and several blocked junctions located approximately three metres below the pavers.
The accompanying images showcase the situation: the first depicts the blocked pipe before intervention, while the second illustrates the same pipe after the relining process.
Rather than suggesting excavation, we implemented the following steps:
- We cleared the line using high-pressure hydro jetting and root-cutting techniques.
- 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 disruption to the pavers or garden beds. The entire procedure was completed in under six hours.
What Is the Pipe Relining Process Without Excavation?
We use a method 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 forming a new pipe within the old one. This process seals cracks, leaking joints, and entry points that tree roots exploit. 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 aspect of the relining process, from the initial camera inspection to the final stages, without involving subcontractors. For more information about the procedure, please visit our pipe relining Sydney page.
When Is Pipe Relining Not a Suitable Option for Pool Drain Repairs?
Pipe relining is highly effective for pipes that are damaged yet maintain most of their shape. If a section has collapsed to an extent that a liner cannot be inserted, that segment will need excavation and replacement. Likewise, if a part has sunk and lost its gradient, the liner will follow the dip, resulting in stagnant water, which requires the 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 such cases, the responsibility for repairs lies with Sydney Water, and we provide the footage needed to assist with the reporting process.
Common Queries About Blocked Pool Drains
Can the Drain Pipes Under a Pool Be Relined?
Absolutely. We can reline the sewer and stormwater pipes situated beneath pool surrounds, as long as the pipe retains its shape. A camera inspection is conducted initially to evaluate the damage and ensure that a liner can be installed. If any sections have collapsed or sunk, those areas will require excavation and replacement.
What Methods Are Used to Repair a Blocked Pool Drain Without Excavation?
We eliminate the blockage 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 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 Are the Primary Causes of Blocked Drains Around Pools in Sydney?
Tree roots are a predominant issue encountered around pools, especially in older terracotta and earthenware pipes. Roots penetrate joints that leak water and continue growing until they trap debris. A camera inspection will help identify the specific cause of the blockage in your drain.
Who Is Liable 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 on 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 falls to Sydney Water, and we will provide the necessary footage to report it.
How Long Does the Pipe Relining Process Take Near a Pool?
The relining project in Sutherland Shire referenced in this article was completed in under six hours, including 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 after the camera inspection.
Book a CCTV Inspection for Your Blocked Drain Near the Pool
Our objective is to identify a method for repairing the drain from within the pipe before considering excavation. We will share the camera footage with you before 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 member of our team will explain the inspection process and what we will be looking for.
Original Article First Published At: When Tree Roots Block Pipes Around Your Pool — And How to Fix It Without Digging Up Your Garden
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