Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Sydney Blocked Drains Plumbing on 10 Dec 2025

In the case of fixing damaged pipes techniques are pipe relining as well as pipe replacement. Both methods aim to restore the full function of your pipes, however there are some distinct differences you need to know.

Key Takeaways

  • Pipe relining is a cost-effective and speedy method to repair damaged pipelines.
  • Linings made of CIPP are used for pipe relining.
  • Epoxy resin is used to line the internal parts of the pipe which cures to creates a new inner lining within the pipe.
  • Relining pipes is efficient, cost-effective and lasts for up to 50 years.
  • The traditional method of replacing pipes is digging up portions of property where pipes are located.
  • The replacement of pipes is often necessary to repair pipes that are severely damaged.
  • A brand new pipeline that is installed by pipe replacement has a lengthy duration (75 to 100 years).
  • The cost of replacing pipes is high and lengthy.
  • The choice between pipe relining versus pipe replacement will depend on the severity of damage.

In this article, we’ll talk about pipe relining vs. pipe replacement. Find out which option will meet 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 which offers a low-cost and rapid solution for the repair of damaged pipelines.

Here’s how it is done:

  1. Technicians clean the pipeline using high-pressure water jetting or mechanical cleaning.
  2. They then apply epoxy resin made from fiberglass or polyester inside the pipeline.
  3. The liner gets cured, creating a new inner lining in the pipeline that’s as long-lasting as the new one.

Pros of Pipe Relining

  • The process is time-efficient, taking about 2 to three hours in order to finish the entire procedure, compared to excavating for days in traditional pipe replacement methods.
  • Cost-effective - Because no excavation or removal is needed in the pipe relining process this method can save nearly half of what you would spend on traditional repairs.
  • Durability – The new liner that is created by pipe relining may last for 50 years!

Pros and Cons of Pipe Relining

  • Not recommended for extremely damaged pipes - If there are serious damages such as cracks, collapses, or joints that aren’t aligned properly in your sewer line then pipe relining might not be feasible.

What exactly is Pipe Replacement?

Pipe replacement involves digging up portions of the yard/sidewalk/driveway where underground pipes are located. These sections may include the collapsed pipes as well as extremely damaged ones caused by negligence or aging.

The following steps comprise most traditional replacements for pipes:

  1. An excavation team digs access to the deteriorated underground pipe.
  2. The old pipeline has been removed and dug up, generating a lot of debris that must be cleared away.
  3. Then, they install a new pipeline in place of the old one.

Pros of Pipe Replacement

  • It is suitable for pipes with severe damage In the event that you need to replace pipes that are suffering from significant damage or corrosion, pipe replacement is the most effective option.
  • Long life – The brand new pipeline, which is replaced by pipe has a long life (75 to 100 years) which makes it a great solution for homeowners who want an option that is long-lasting.

Pros of Pipe Replacement

  • It is expensive – Excavating work required to replace pipes can be long and costly.
  • It is time-consuming. Pipe replacements may take weeks depending on the size of the work and the depth of excavations that are required.

Which one is best for you?

The decision of either relining or repairing your pipes mostly is contingent on the extent of damage caused. If your pipes are suffering from small damages, like cracks or leaks that are minor, relining would probably be the best option, as it is less costly as well as quicker than conventional replacements.

However, if there are serious injuries, like breaks or collapses and breaks, you must consider conventional pipe replacement, though it could be more costly 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

Common Questions & Answers

What is pipe relining?

Relining pipes is a procedure that involves creating a new pipe within the existing damaged pipe. It is accomplished by inserting a flexible liner in the old pipe and the process of curing it. Once it is cured, the new pipe is free of joints or seams that improve its structural integrity.

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

Traditional replacement of pipes involves digging and physically taking away old pipes, before replacing them with new ones. The alternative, pipe relining does not require excavation. Instead it’s accomplished by utilizing technology that allows pipe repair without digging up large portions of land.

Which option is less expensive: liner relining or conventional pipe replacement?

Relining pipelines typically costs less than the traditional methods of pipeline repair as there is no cost related to excavation and other techniques required for the removal and replacement of old pipes.

All kinds of pipes can be reflined?

There are a few types of pipes that can be relined successfully. Your plumber will need to examine the situation to determine if it’s feasible to line the particular kind of pipes. But, the majority of contemporary pipes are relined with this technique.

How long will the process of relining pipes take?

The exact length of time needed for the process depends on different variables like the location, the environment, and type of damage; however, the average Pipe Relining process typically takes about 2 days, depending on how many metres need to be lined..

In conclusion, if would like to steer clear of digging work and save cash while restoring your damaged pipelines’ performance to their fullest Consider utilizing our Sydney Blocked Drains Plumbing ‘s rapid and effective pipe relining solutions. Contact us!

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