Have you ever wondered what happens when an underground drain becomes cracked, damaged or invaded by tree roots? Traditionally, repairing a damaged pipe often meant digging up gardens, driveways, concrete slabs and other structures to access and replace the affected section. Today, there is a smarter alternative: pipe relining.
So, what is relining, and how can it help protect your property from costly plumbing problems?
Relining is a modern, trenchless pipe repair method that restores damaged pipes from the inside with an epoxy resin, creating a strong, durable lining within the existing pipe. It can eliminate the need for extensive excavation, reduce disruption to your property and provide a long-lasting solution for many common drainage issues.
At Reline-A-Pipe, we specialise in residential, commercial and industrial pipe relining across Sydney. In this guide, we explain how drain relining works, its benefits and when it may be the right solution for your property.
What Is Pipe Relining?
Pipe relining is a trenchless technology used to repair damaged or deteriorating pipes without having to dig up and replace the entire pipeline.
The process involves inserting a flexible liner coated with specialised epoxy resin into the existing damaged pipe. Once positioned correctly, the liner is cured and hardens to form a new, seamless internal pipe. It is also known as cured-in-place pipe lining (or CIPP lining).
This new lining reinforces the existing pipe, seals cracks and helps prevent water leaks and tree roots from entering through damaged sections.
Drain relining can be suitable for many types of pipes, including clay, concrete and PVC drainage pipes, depending on their condition and the repair required. This can be for sewer lines, stormwater pipes, pool pipes, gas and many other types of pipes or drainage.
It is commonly used for sewer pipes, stormwater drains and other suitable pipe systems in residential, commercial and industrial properties.
How Does Pipe Relining Work?
Understanding how pipe lining works can help you decide whether trenchless repair is the right option for your plumbing or drainage problem.
Although the exact method varies depending on the pipe and relining technology used, the process generally involves five steps.
1. CCTV Pipe Inspection
The first step is to inspect the damaged pipe using specialised CCTV drain cameras.
This allows technicians to identify cracks, leaks, tree root intrusion & tree root damage, blockages and other structural problems. The inspection also helps determine the location and extent of the damage and whether the pipe is suitable for relining.
2. Thorough Pipe Cleaning
Before installing the liner, the host pipe must be cleaned to remove debris, grease, sediment, tree roots and other obstructions.
High-pressure water jetting and specialised mechanical equipment may be used to prepare the internal pipe surface.
Proper cleaning with high pressure water jets is essential to ensure the liner can be positioned correctly and form an effective repair.
3. Installing the Resin-Coated Liner
A flexible liner impregnated with specialised resin is inserted into the existing pipe through an access point.
Depending on the pipe relining technology system, the liner may be pulled into position or inverted into the pipe. It is then expanded or held in place so that it conforms to the internal surface of the damaged pipe.
4. Curing the Liner
Once the liner is in position, the resin is cured using a method appropriate for the materials and system being installed. This may involve ambient curing, heat or ultraviolet (UV) light.
As the resin hardens, it forms a durable internal lining that seals defects and reinforces the existing pipe.
5. Final CCTV Inspection
After curing, a final camera inspection checks the completed lining and confirms that the repaired section is in suitable condition.
The result is a restored pipe that can continue operating without the need for extensive excavation in many cases.
What Are the Benefits of Pipe Relining?
Pipe lining offers several advantages over traditional pipe replacement, particularly when underground pipes are difficult to access.
Minimal Excavation and Property Disruption
One of the biggest benefits of trenchless pipe relining is that it can repair damaged pipes and aid in pipe rehabilitation without digging extensive trenches.
This can help protect gardens, driveways, paved areas, concrete slabs and landscaping. Depending on the pipe’s condition and access requirements, little or no excavation may be necessary for the drain rehabilitation.
Faster Pipe Repairs
Traditional pipe replacement can involve excavation, removal of damaged pipes, installation of new pipework and restoration of the affected area.
Pipe lining can simplify this process, often reducing the time required to complete a repair. The actual timeframe depends on the length of the pipe, the extent of damage and the relining method used.
A Durable, Long-Term Solution
A professionally installed pipe liner creates a strong internal barrier that helps restore the structural integrity of suitable damaged pipes.
The relined pipes can resist many common causes of deterioration and help prevent tree roots from penetrating through the repaired section.
Potential Cost Savings
Pipe relining may reduce the overall cost of repairing damaged pipes by limiting excavation, labour and reinstatement work.
For example, repairing a drain beneath a concrete driveway without removing and replacing the driveway can avoid significant additional work.
The final cost will depend on the pipe’s location, diameter, length, condition and the repair method required.
Improved Drainage Performance
Cracks, root intrusion and damaged pipe joints can interfere with normal drainage.
By sealing defects and creating a smoother internal surface, pipe relining can help restore efficient flow through a suitable pipe. Existing blockages and obstructions must be addressed as part of the repair.
What Problems Can Pipe Relining Fix?
Pipe relining can be an effective solution for many common underground drainage problems.
These include:
- Cracked pipes: Relining can seal cracks and reinforce suitable damaged sections.
- Tree root intrusion: The new lining can seal entry points that allow roots to enter the pipe.
- Leaking pipes: A suitable liner can seal leaks caused by cracks or defective joints.
- Deteriorating pipes: Relining can restore the internal structure of many ageing pipes.
- Damaged pipe joints: Certain joint defects can be repaired using an appropriate relining system.
- Recurring drainage problems: Where CCTV inspection identifies structural damage as the underlying cause, relining may provide a longer-term solution than repeated drain cleaning alone.
However, pipe relining is not suitable for every situation. Severely collapsed pipes, significant deformation or other structural problems may require excavation or an alternative repair method. A professional inspection is the best way to determine the right approach.
Is Pipe Relining Better Than Replacing Pipes?
Whether pipe relining is better than traditional pipe replacement depends on the condition of the existing pipe and the nature of the damage.
Pipe relining is often an excellent option when the existing pipe can accommodate a liner and the damage can be repaired internally.
Traditional pipe replacement may be necessary when a pipe has completely collapsed, cannot be accessed for relining or has other defects that make an internal repair unsuitable.
Here is a simple comparison:
| Feature | Pipe Relining | Traditional Pipe Replacement |
|---|---|---|
Excavation | Usually minimal or none | Often requires digging |
Property disruption | Generally lower | Can be significant |
Repair method | Creates a new lining inside the existing pipe | Removes and replaces the damaged pipe |
Restoration work | Often reduced | May require landscaping or paving repairs |
Suitability | Depends on pipe condition and access | Suitable for many pipes that cannot be relined |
A CCTV inspection helps determine which method is most appropriate for your property. In some cases, a combination of repair methods may be the best solution.
How Long Does Pipe Relining Last?
Pipe relining is designed to provide a durable, long-term repair. The lifespan of a relined pipe depends on the lining materials, installation quality, operating conditions and maintenance.
Relining systems can provide decades of service when correctly specified and installed.
At Reline-A-Pipe, we provide a 50-year guarantee on our new pipe lining installations, subject to the applicable terms and conditions. Ask our team about the coverage available for your specific project.
How Much Does Pipe Relining Cost?
The cost of pipe relining varies according to several factors, including:
- The length and diameter of the pipe.
- The type and severity of the damage.
- The location of the damaged section and accessibility.
- The amount of cleaning or root removal required.
- The relining technology and materials needed.
- Whether additional repairs or excavation are necessary.
Although the upfront cost of relining can vary, avoiding extensive excavation and property restoration may make it a cost-effective alternative to conventional pipe replacement.
The best way to understand the cost for your property is to arrange a professional inspection by a plumbing specialist that has experience with liner installation and obtain a quote based on the condition of your pipes.
What Are the Signs You May Need Pipe Relining?
Damaged underground pipes do not always show obvious signs until the problem becomes more serious.
Look out for these common warning signs:
- Frequently blocked drains that keep returning after cleaning.
- Slow drains, sinks, showers or toilets.
- Unpleasant sewage odors around your property and gurgling sounds.
- Tree roots repeatedly entering your drainage system.
- Unexplained damp patches or unusually wet spots in the garden.
- Cracks or other signs of damage associated with leaking underground pipes.
These symptoms can have several causes, so they do not automatically mean you need pipe relining. A CCTV drain inspection carries out by a local plumber can identify the underlying problem and help determine the most appropriate repair.
Why Choose Reline-A-Pipe for Pipe Relining in Sydney?
When you need to repair damaged pipes, choosing an experienced pipe relining specialist can make a significant difference.
Reline-A-Pipe NSW has been providing pipe relining services since 2004, working with residential, commercial and industrial clients across Sydney.
Our services include CCTV pipe inspections, drain cleaning, robotic cutting and specialised pipe relining solutions.
We assess the condition of your pipes and recommend a suitable repair method based on the problem, helping you make an informed decision about your drainage system.
Whether you are dealing with recurring blocked drains, tree root intrusion, leaking pipes or damaged underground infrastructure, our team can help you explore your repair options.
Frequently Asked Questions About Pipe Relining
What is pipe relining in simple terms?
Pipe relining is a way to repair a damaged pipe from the inside. A resin-coated liner is installed inside the existing pipe and cured to create a strong new internal lining, often without extensive digging.
Does pipe relining require excavation?
In many cases, pipe relining can be completed through existing access points without extensive excavation. However, some pipes may require a small excavation or additional access, depending on their location and condition.
Can tree roots grow through a relined pipe?
A correctly installed liner seals the defects through which tree roots enter the repaired section. However, roots may still enter through other damaged or unlined parts of the drainage system.
Is pipe relining suitable for old pipes?
Yes, many older clay, concrete and PVC pipes can be relined if their condition and configuration are suitable. A CCTV inspection helps establish whether relining is appropriate. This includes stormwater and sewer pipe lining.
How long does the pipe relining process take?
Many residential relining jobs can be completed within one or two days, although the timeframe varies according to the pipe’s length, condition, accessibility and the relining method used.
Is pipe relining a permanent solution?
Pipe relining is intended as a long-term repair. Its performance depends on the materials, installation quality, pipe conditions and applicable maintenance requirements. Ask your contractor about the expected service life and warranty for the system being installed.
Is pipe relining worth the investment?
For suitable damaged pipes, relining can offer long-term value by reducing excavation, minimising disruption and restoring pipe function. A professional inspection and itemised quote can help you compare relining with traditional replacement.
Contact Reline-A-Pipe for Expert Pipe Relining in Sydney
If you have been dealing with recurring blocked drains, cracked pipes or suspected tree root intrusion, pipe relining may offer a practical alternative to digging up and replacing your drainage system.
Now that you know what pipe relining is and how it works, the next step is to find out whether your pipes are suitable for this repair method.
Contact Reline-A-Pipe today to discuss your drainage concerns, arrange a CCTV pipe inspection and request a quote for professional pipe relining in Sydney.
Call our team on 02 9649 3981 for a relining quote and to get started.
Feel free to contact our team for any inquiries regarding residential or commercial quotations.
You can call the team at Reline-A-Pipe in Sydney on (02) 9649 3981 or contact us online.
