Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Melbourne Blocked Drains Plumbing on 20 Nov 2025

When it comes to fixing damaged pipes, two popular solutions are pipe relining and pipe replacement. Both approaches aim to restore the function of your pipelines, but they differ in a way that you should be aware of.

Key Takeaways

  • Pipe relining is a cost-effective and speedy method to repair damaged pipelines.
  • The lining of CIPP is utilized in pipe relining.
  • Epoxy resin is used to line the inside areas of the pipe. This cures to create a new inner lining in the old pipeline.
  • Relining pipelines is time-efficient, cost-effective, and will last for up to 50 years.
  • The traditional method of replacing pipes is digging up portions of property in which pipes are located.
  • Pipe replacement may be necessary for pipes that are badly damaged.
  • A new pipe installed via pipe replacement has a long lifespan (75 to 100 years).
  • Replacement of pipes is expensive and lengthy.
  • The decision between pipe relining or pipe replacement is based on the extent of damage caused.

In this post, we’ll look at pipe relining in comparison to. pipe replacement, and find the one that best suits your needs better.

Is Pipe Relining a thing?

Pipe relining, also known as Cured-In-Place pipe (CIPP) lining is a cutting-edge repair method which offers a low-cost and swift solution for restoring damaged pipelines.

Here’s how it will work:

  1. Technicians clean the pipeline by using high-pressure water jetting or mechanical cleaning.
  2. Then, they place epoxy resin made from polyester or fiberglass liner inside the pipeline.
  3. The liner cures, creating a new inner lining within the old pipeline, which is just as strong as a brand new one.

Pros of Pipe Relining

  • Time-efficient – It usually takes just 2 to 3 hours to complete the whole process, as opposed to digging for several days with traditional pipe replacement methods.
  • Cost-effective since no excavation or removal is necessary for pipe relining This can help you save more than 50% of the cost you’d spend on traditional repairs.
  • Durability – The lining formed by pipe relining can last up to 50 years!

Con’s of Pipe Relining

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

What exactly is Pipe Replacement?

Pipe replacement involves digging up portions of the yard/sidewalk/driveway where underground pipes are located. The areas may contain broken pipes, or very damaged ones due to lack of maintenance or age.

The following steps are typical of traditional replacements for pipes:

  1. An excavation team digs access to the deteriorated underground pipe.
  2. The pipeline was ripped off and dug up, generating a lot of debris that needs to be disposed of.
  3. Then, they install an entirely new pipeline instead of the previous one.

Pros and Cons of Pipe Replacement

  • Perfect for severely damaged pipes Ideal for severely damaged pipes – If you must replace pipes that are suffering from significant corrosion or damage, pipe replacement is the ideal solution.
  • Longer life span – The new pipeline replaced with pipe has a lengthy lifespan (75 up to 100 years) making it an ideal choice for homeowners in search of a permanent solution.

Cons of Pipe Replacement

  • The work of excavation required for pipe replacement can be lengthy and expensive.
  • Time-consuming – Traditional pipe replacements could take several weeks, based on the extent of work and the extent of excavation required.

Which one should you select?

The decision of either relining or repairing your pipes mostly is contingent on the degree of damage caused. If your pipes suffer small damages, like cracks or minor leaks, then replacing them is likely to be the best option, as it is less costly and is also faster than conventional replacements.

However, if you have severe damage such as breaks or collapses and breaks, you must consider replacing the pipe with a traditional method, even though it will cost more and may 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

Common Questions & Answers

What is the process of relining pipes?

Relining pipes is a process that creates a brand new pipe inside the existing damaged pipe. It is accomplished by inserting a liner that is flexible into the old pipe and placing it into place. Once cured, the new pipe is free of joints or seams which improves its structural strength.

What is the difference between traditional pipe replacement and differ from relining pipe?

Traditional pipe replacement involves digging and physically removing old pipes, and then replacing them with brand new ones. However, pipe relining does not require excavation. Instead it’s done with the help of technology, which allows pipe repair without digging up huge areas of land.

Which one is less expensive - the pipe relining method or traditional pipe replacement?

Relining pipelines typically costs less than the traditional methods of repair to pipelines since there is no cost related to excavation or other methods that are required to remove and replace old pipes.

All kinds of pipes can be relined?

There are a few types of pipes that can be successfully relined. In the end, your plumber will need to examine the situation to determine if it’s feasible to line your specific kind of pipes. However, the majority of new pipes may be lined using this procedure.

How long does the pipe relining process take?

The exact time required for the process is dependent on various factors such as location, environmental conditions and type of damage; however the typical pipe Relining process typically takes about 2 days, depending on how many meters need to be lined..

If you wish to avoid digging works and save money in the process of restoring your damaged pipelines’ full function, consider opting for our Melbourne Blocked Drains Plumbing ‘s rapid and effective pipe relining solutions. Contact us today!

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