A damaged plumbing system can lead to leaks, water damage, and costly repairs. Ignoring these issues may cause further damage, increasing expenses and creating health risks from mould growth. Traditional pipe repair methods involve excavation, which can be disruptive and expensive. Newer methods allow pipes to be fixed without digging, reducing costs and keeping properties intact.
Pipe damage can occur due to various factors, including age, shifting soil, tree root intrusion, or corrosion. Over time, pipes deteriorate, leading to leaks and blockages. In commercial and residential properties, plumbing failures can disrupt daily activities and cause inconvenience.
Identifying issues early and using effective repair methods can prevent expensive damage and water wastage.
What is Pipe Relining?
This method repairs damaged pipes by inserting a resin-coated liner inside the existing pipe. Once the resin hardens, it forms a new pipe within the old one. It is a cost-effective and efficient way to restore damaged sewer, stormwater, and drainage pipes without excavation.
This technology is suitable for different pipe materials, including PVC, cast iron, and clay pipes. It reinforces existing infrastructure while minimising disruption. Since it does not require digging, this method is often preferred in urban areas where excavation may be challenging due to underground utilities, driveways, or landscaping.
How It Works
Plumbers follow a structured process to ensure effective repairs. The process involves several key steps:
- CCTV inspection is performed to assess the damage inside the pipe and identify cracks, blockages, or weak spots
- High-pressure water jets or mechanical tools clean the pipe to remove debris, scale buildup, and obstructions
- A second inspection ensures the pipe is ready for repair and that no residual obstructions remain
- A resin-coated liner is inserted through an access point and positioned inside the damaged pipe
- The liner is inflated using air or water pressure, pressing it against the inner walls of the existing pipe
- The resin cures through heat, steam, or UV light, creating a new pipe within the old one
- A final inspection is performed to confirm that the lining is securely in place and that the pipe is fully functional
Advantages of Trenchless Repair
This method eliminates the need for extensive digging, preventing damage to driveways, gardens, and pathways. It lowers overall costs by reducing labour and restoration expenses. The seamless internal lining strengthens pipes, preventing leaks and blocking tree roots from entering through cracks.
The smoother internal surface improves water flow, reducing the risk of blockages. Most repairs are completed within a day, making it a faster alternative to traditional methods.
Additional benefits include:
- Extending the lifespan of existing pipes, reducing the need for frequent replacements
- Providing a water-tight seal that prevents infiltration and exfiltration of water
- Reducing the risk of contamination in sewer or drainage systems
- Offering a non-invasive repair method that is ideal for properties with limited access
- Enhancing structural integrity without requiring major renovations or excavation
When It May Not Be Suitable
Some pipes may not be suitable for relining. If a pipe has collapsed or lost its structure, replacement may be required. This method also does not fix external issues such as broken pipe supports or severe corrosion. Proper maintenance is needed, as some cleaning tools can damage the relined surface.
Factors that may prevent this method from being a viable option:
- Pipes that have completely collapsed or have severe structural damage
- Misaligned pipe sections that prevent the liner from being installed properly
- Pipes with diameter variations or severe deformation that make this method ineffective
- Properties that require an upgrade to larger-diameter pipes for increased capacity
Other Trenchless Pipe Repair Methods
There are several alternative methods available for pipe repair.
- Pipe coating applies an epoxy spray inside the pipe to seal minor cracks and reinforce aging infrastructure
- Mechanical spot repair reinforces weak sections using a metal sleeve to provide localized reinforcement
- Pipe bursting replaces old pipes by breaking them while pulling a new pipe into place without excavation
- Slip lining inserts a smaller pipe within the existing one, reducing its diameter but maintaining function for low-flow applications
Frequently Asked Questions
What types of pipes can be repaired without excavation?
This method works for materials such as PVC, cast iron, copper, clay, and asbestos cement. It is suitable for sewer, stormwater, and drainage pipes.
Is this method suitable for all properties?
It can be used in homes, businesses, and industrial facilities. It is particularly useful for locations where excavation is not feasible.
How much does it cost?
Costs depend on factors like pipe size, damage severity, and accessibility. The complexity of the job and the materials used also influence pricing.
Is this a long-term solution?
A properly relined pipe can last up to 50 years, reducing the need for frequent repairs. The resin used in relining is durable and resistant to corrosion and tree root intrusion.
How long does it take?
Most repairs are completed within a day, depending on the extent of the damage and the length of the pipe being repaired.
Are there cases where this method is not an option?
If a pipe has collapsed, is severely deformed, or has significant alignment issues, full replacement may be required. A professional assessment is needed to determine the best approach.
Need Pipe Repairs in Newcastle or Hunter?
Green Planet Plumbing provides pipe relining services for residential and commercial properties. Our team assesses the condition of pipes and applies trenchless methods to restore function without major disruption. Call (02) 4911 9402 to discuss your needs and schedule an assessment.