Your pool area may be stunning, but persistent drainage issues could be lurking nearby. In the Sutherland Shire and southern Sydney, we frequently utilise advanced camera technology to inspect blocked sewer or stormwater lines adjacent to pools. Our findings often reveal invasive tree roots that have infiltrated the joints of ageing piping systems.
Fixing a blocked pool drain doesn’t necessarily mean lifting pavers or digging up your garden. This article delves into the causes of these blockages, the techniques we use to detect them, and how pipe relining presents an effective solution by addressing the problem from within the pipe itself.
Which Drainage Systems Are Positioned Under Your Backyard Pool?
Many Sydney backyard pools are surrounded by paving, tiles, decking, retaining walls, and garden beds. Beneath this hardscape lies an intricate network of drainage lines, which typically includes:
- The household sewer line
- Stormwater drainage systems originating from the roof, paving, and pool area
- The pool backwash line
- Overflow and subsoil drains
It’s crucial to understand that the pool’s filtration system, which connects the pump, filter, skimmer box, and return jets, operates under pressure and is distinct from the drainage systems. Our focus here is on the drainage lines, which are particularly susceptible to tree root intrusion.
How Do Tree Roots Lead to Blockages in Pool Drains?
Tree roots naturally seek out moisture, and even a slight leak at a pipe joint can attract them. Roots from trees situated several metres away can extend towards a cracked joint in older terracotta, earthenware, or PVC pipes. Once a small root infiltrates, it thrives in the damp environment within the pipe, accumulating waste and debris, ultimately causing a blockage.
When a drain adjacent to the pool becomes obstructed, backwash water cannot escape, potentially leading to flooding on the pool deck. If the blockage is within the sewer line, it may cause showers, toilets, and floor drains inside the house to back up.
If you’re landscaping around a new pool, consider consulting our guide on appropriate tree species to plant. This will help you avoid blocked drains by recommending trees that are safer to position near piping.
What Symptoms 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 backwashed
- Water accumulates on the pavers or lawn adjacent to the pool
Each of these indicators suggests a potentially blocked or damaged pipe underground, and a camera inspection can help us accurately identify the issue.
Why Is Excavation Around Your Pool Best Avoided?
Accessing the drainage around a pool can be a daunting task that often results in damage. Reaching a pipe usually requires lifting travertine or granite pavers, cutting through concrete slabs or retaining walls, or removing garden beds, turf, or decking. Once the pipe is repaired, restoring the paving and landscaping can be an extensive and costly undertaking.
This is why we favour relining methods over excavation. In the example below, relining allowed 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 emanating from the back garden
- Water pooling in a tiled corner
Our CCTV drain inspection uncovered considerable root intrusion from a nearby tree, cracks in an old earthenware line, and multiple blocked junctions situated about 3 metres beneath the pavers.
The images illustrate the situation: the first shows the blocked pipe before intervention, while the second displays the same pipe after relining.
Rather than recommending excavation, we took the following steps:
- We cleared the line using high-pressure hydro jetting and root-cutting tools.
- 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 employ a method 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 technique 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 oversees every phase of the relining process, from the initial camera inspection to the final stages, without involving subcontractors. For more details about the procedure, please visit our pipe relining Sydney page.
When Is Pipe Relining Inappropriate for Pool Drain Repairs?
Pipe relining is effective for pipes that are damaged yet maintain most of their shape. If a section has collapsed to a point that a liner cannot be inserted, that segment will require excavation and replacement. Similarly, if a section has settled and lost its gradient, the liner will follow the dip, leading to stagnant water, necessitating reinstallation of the pipe at the correct slope.
Occasionally, our camera inspections reveal that roots have penetrated the Sydney Water main rather than your private pipes. In such instances, the responsibility for repairs lies with Sydney Water, and we provide the necessary footage to streamline the reporting process.
Common Questions About Blocked Pool Drains
Can Drain Pipes Surrounding a Pool Be Relined?
Absolutely. We can reline the sewer and stormwater pipes located beneath pool surrounds, provided the pipe retains its shape. A camera inspection is performed first to assess the damage and confirm that a liner can be installed. Any sections that are collapsed or sunk will need to be excavated and replaced.
What Methods Are Used to Resolve a Blocked Pool Drain Without Excavation?
We clear blockages 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 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 Are the Primary Causes of Blocked Drains Around Pools in Sydney?
Tree roots are a predominant cause we encounter around pools, especially in older terracotta and earthenware pipes. Roots infiltrate joints that leak water and continue to grow until they trap debris. A camera inspection will help determine 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 remove 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 for reporting.
How Long Does Pipe Relining Take Near a Pool?
The relining project in Sutherland Shire discussed 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 following the camera inspection.
Book a CCTV Inspection for Your Blocked Drain Near the Pool
Our aim is to determine a method for repairing the drain from within the pipe before considering excavation, and we will share the camera footage with you before commencing any work.
If you observe signs of a blocked drain near your pool, schedule 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 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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