23 Mar. 25

Guide to Understanding Pipe Relining

Pipe relining is a modern solution to fixing damaged pipes without the need for disruptive and costly excavation. Traditional methods of pipe repair often require digging up large areas of your yard, driveway, or floors, but with pipe relining, you can restore your plumbing system with minimal disruption. In this guide, we’ll explain what pipe relining is, how it works, and why it’s becoming the preferred method for repairing damaged pipes.

What is Pipe Relining?

CCTV drain inspection in progress

Pipe relining is a trenchless method of repairing damaged or deteriorating pipes by creating a new pipe within the existing one. Rather than removing the old pipe, a flexible lining is inserted and bonded to the interior of the original pipe, effectively forming a durable, long-lasting new pipe.

This method is commonly used to repair pipes that have been damaged by tree roots, corrosion, or ground movement, and it is an ideal solution for fixing cracked, leaking, or collapsed pipes.

How Does Pipe Relining Work?

Licensed plumber relining pipe

The pipe relining process involves several steps to ensure that the damaged pipe is restored correctly. Here’s a breakdown of how it works:

1. Inspection with CCTV Camera

Before any work begins, a plumber will inspect the damaged pipe using a CCTV drain camera. This allows them to assess the extent of the damage and determine if pipe relining is the best solution. The camera provides a clear view of cracks, blockages, and root intrusions within the pipe.

2. Pipe Cleaning

Once the inspection is complete, the pipe must be thoroughly cleaned to remove any debris, roots, or blockages. This is typically done using high-pressure water jetting or mechanical cleaning tools. A clean pipe is essential for ensuring that the lining adheres correctly to the pipe’s interior.

3. Installing the Liner

After the pipe is cleaned, a resin-coated liner is inserted into the damaged pipe. This liner is made from a flexible material, such as felt or fibreglass, which is impregnated with an epoxy resin. The liner is carefully positioned inside the pipe to cover the damaged areas.

4. Inflating the Liner

Once the liner is in place, it is inflated using air or water pressure. This forces the liner to expand and fit snugly against the walls of the existing pipe. As the resin cures, it hardens, forming a strong, seamless new pipe inside the old one.

5. Final Inspection

After the liner has cured, the plumber will perform a final CCTV camera inspection to ensure that the relining process was successful and that the pipe is fully restored. The result is a new, durable pipe that will last for decades.

Advantages of Pipe Relining

Blocked drain due to roots

Pipe relining offers several benefits compared to traditional pipe repair methods. Here are some key advantages:

1. Minimal Disruption

One of the biggest advantages of pipe relining is that it requires no digging. Traditional pipe repairs often involve extensive excavation, which can disrupt your landscaping, driveway, or floors. With pipe relining, the entire process is done through access points, meaning there’s minimal disruption to your property.

2. Cost-Effective

Although pipe relining can be more expensive upfront than traditional repairs, it is often more cost-effective in the long run. Since there’s no need for excavation, you save on labour and restoration costs. Additionally, the long-lasting nature of the relined pipes means you’ll avoid future repair costs.

3. Durability

The epoxy resin used in pipe relining is extremely durable, providing a new pipe that is resistant to corrosion, root intrusion, and leaks. Most relined pipes come with a warranty of up to 50 years, making it a reliable and long-lasting solution.

4. Faster Repairs

Pipe relining is a quicker process than traditional repairs. Depending on the size and length of the damaged pipe, the relining process can often be completed in a single day, compared to the days or even weeks required for traditional excavation and repair.

5. Eco-Friendly

Because pipe relining doesn’t involve digging or removing old pipes, it’s an environmentally friendly option. It reduces waste and preserves the existing pipe infrastructure, which is particularly beneficial in urban areas where excavation can be damaging.

When Should You Consider Pipe Relining?

Pipe relining in Sydney home
emergency plumber Redfern

Pipe relining is an excellent solution for a variety of plumbing problems, but it’s important to know when it’s the right choice. Here are some scenarios where pipe relining is ideal:

  • Tree Root Intrusions: If tree roots have penetrated your pipes, causing blockages or leaks, pipe relining can seal the cracks and prevent further root intrusion.
  • Cracked or Collapsed Pipes: Pipes that have cracked due to ground movement or age can be effectively restored with pipe relining, avoiding the need for replacement.
  • Corroded Pipes: For older metal pipes that have corroded or deteriorated over time, pipe relining provides a new, corrosion-resistant interior without the need for pipe removal.
  • Frequent Blockages: If you experience regular blockages due to pipe damage, relining can create a smoother interior that prevents debris from getting trapped.
  • Sewer Pipe Repairs: Pipe relining is commonly used for sewer pipe repairs, particularly in hard-to-reach areas like under driveways or buildings.

How Long Does Pipe Relining Last?

One of the major benefits of pipe relining is its durability. The resin used in the process is designed to withstand the pressures of daily use, and most relined pipes have a lifespan of 50 years or more. The materials are resistant to corrosion, root intrusion, and shifting soil, making them a long-term solution for pipe repairs.

Stormwater pipe relining Sydney

Pipe Relining Costs

The cost of pipe relining can vary depending on factors such as the length of the pipe, the extent of the damage, and the location of the pipes. On average, pipe relining in Australia can range from $300 to $1,000 per metre. While this may seem expensive, it’s important to remember that the long-lasting benefits and minimal disruption often make it a more cost-effective solution than traditional repairs.

Pipe Relining vs Traditional Pipe Repair

When comparing pipe relining to traditional pipe repair methods, it’s essential to consider both the short-term and long-term costs and benefits. Here’s a quick comparison:

AspectPipe ReliningTraditional Pipe Repair
Excavation RequiredNoYes, requires digging up pipes
CostHigher upfront cost, lower long-term costLower upfront cost, higher restoration and repair costs
TimeQuick process, often completed in a dayTime-consuming, especially with excavation
DurabilityLasts up to 50 yearsDepends on material used for replacement
DisruptionMinimal, no diggingHigh, requires significant property disruption
Environmental ImpactEco-friendly, less wasteRequires removal of old pipes and digging
Tree root damage in pipe

When to Call a Professional Plumber for Pipe Relining

While pipe relining is an excellent solution for many plumbing problems, it’s important to consult a professional plumber to determine if it’s the right option for your situation. A plumber can conduct a thorough inspection of your pipes using CCTV cameras and recommend the best course of action. If pipe relining is appropriate, they can complete the process efficiently and professionally.

Pipe relining is a revolutionary solution to repairing damaged pipes without the hassle of traditional excavation. It provides a cost-effective, durable, and environmentally friendly alternative to digging up and replacing pipes. Whether you’re dealing with tree root intrusion, corroded pipes, or recurring blockages, pipe relining offers a long-lasting fix that will keep your plumbing system running smoothly for years to come.