Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Melbourne Blocked Drains Plumbing on 21 Mar 2026

When it comes to fixing damaged pipes, the two most common solutions are pipe relining and pipe replacement. Both of these methods are designed to restore the full function of your pipes, however they differ in a way that you need to know.

Key Takeaways

  • Pipe relining is an economical and speedy method to repair damaged pipelines.
  • CIPP lining is used in pipe relining.
  • Epoxy resin is used to line the inside parts of the pipe which cures to create a new inner lining inside the old pipeline.
  • Pipe relining is time-efficient, cost-effective, and can last for up to 50 years.
  • The traditional method of replacing pipes is digging up sections of land in which pipes are situated.
  • A replacement pipe may be needed for pipes that are badly damaged.
  • A new pipeline installed through pipe replacement has a lengthy duration (75 or 100 years).
  • The cost of replacing pipes is high and laborious.
  • The choice between pipe relining versus pipe replacement will depend on the severity of damage that has been caused.

In this article, we’ll talk about pipe relining as opposed to. pipe replacement. Find out which one suits your needs more.

The term "pipe relining" is used to describe the process of repairing pipes.

Relining pipes or Cured-In Place Pipe (CIPP) Lining is a modern repair method that offers a cost-effective and quick solution to repair damaged pipelines.

Here’s how it is done:

  1. A technician cleans the pipeline with high-pressure water jetting or mechanical cleaning.
  2. They then apply epoxy resin made of fiberglass or polyester liner in the existing pipeline.
  3. The liner is cured and forms a new liner within the old pipeline that’s just as robust as a new one.

The advantages of Pipe Relining

  • Time-efficient – It usually takes just 2 to three hours for the whole process, as opposed to digging for many days using traditional pipe replacement techniques.
  • Cost-effective - Because no excavation or removal is required in pipe relining This can help you save more than half of the amount you pay for traditional repairs.
  • Durability – The new liner formed by pipe relining can last for up to 50 years!

Con’s of Pipe Relining

  • Not suitable for the most damaged pipes - If there are significant damages such as cracks or collapses or misaligned joints in your sewer line, then pipe relining could not be possible.

What is Pipe Replacement?

Pipe replacement involves digging up portions of the yard/sidewalk/driveway where underground pipes are located. These sections may include broken pipes, or very corrosion-prone ones, due to age or neglect.

The following steps comprise most traditional replacements for pipes:

  1. An excavation team digs access to the degraded underground pipe.
  2. The old pipeline is detached and dug out producing much debris which needs to be removed.
  3. Then, they construct an entirely new pipeline instead of the old one.

Pros and Cons of Pipe Replacement

  • Perfect for severely damaged pipes In the event that you need to replace pipes with severe corrosion or damage, pipe replacement is the best option.
  • Long lifespan – The new pipeline that is installed by pipe replacement has a lengthy lifespan (75 to 100 years) which makes it a great solution for homeowners who want a permanent solution.

Pros and Cons of Pipe Replacement

  • Extraction work that is costly for the replacement of pipes is long and costly.
  • Time-consuming – Traditional pipe replacements could take several weeks, based on the nature of the project and the extent of excavation required.

Which one should you choose?

The decision to choose between either relining or repairing your pipes mostly depends on the amount of damage caused. If your pipes are suffering from minor damage, such as cracks or leaks that are minor, replacing them is likely to be the best option, as it’s less expensive and is also faster than conventional replacements.

However, if you have severe injuries, like breaks or collapses, then you should consider an alternative to replacing your pipe, although it may be more expensive and take longer.

Pipe Relining Pipe Replacement
Procedure CIPP lining using epoxy resin Excavating and replacing the old pipeline
Pros Time-efficient- 2 to 3 hours to complete Suitable for severely damaged pipes
Cost-effective – Almost half of traditional costs. New pipeline lasts for 75 to 100 years
Durable – Lasts up to 50 years
Cons Not suitable for severely damaged pipes Costly
Time-consuming
When to choose Minor damages like cracks or minor leaks Severe damages like collapses or breaks

Frequently Asked Question

What is the process of relining pipes?

Relining of pipes is a process that creates a brand new pipe inside the existing damaged pipe. It is accomplished by inserting a flexible liner into the old pipe and then curing it in place. Once it is cured, the new pipe is completely free of joints and seams, which increases its structural integrity.

What does traditional pipe replacement differ from pipe relining?

Traditional replacement of pipes involves excavating and physically taking away old pipes then replacing them with new ones. However, pipe relining doesn’t require excavation; instead it’s carried out by using technology that permits repairs to pipelines without digging large areas of land.

Which option is less expensive: pipe relining or traditional pipe replacement?

Relining pipes typically cost less than the traditional methods of repair to pipelines since there are no expenses related to excavation or other methods necessary for removing and replacing old pipes.

All kinds of pipes can be reflined?

Some types of pipes can be relined successfully. Your plumber must examine your situation to determine if it is feasible to line your particular type of pipes. However, most new pipes may be repaired by this technique.

How long will the pipe relining process take?

The precise time needed for the procedure is contingent upon various factors such as location, environmental conditions and the type of damage. However, the average pipe Relining task usually takes between 2 and 3 days based on the amount of metres need to be lined..

In conclusion, if are looking to stay clear of invasive excavation work and save cash as you restore your pipelines’ functionality take a look at our Melbourne Blocked Drains Plumbing ‘s quick and efficient pipe relining services. Contact us today!

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