Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Local Sydney Blocked Drains on 15 Feb 2026

In the case of fixing damaged pipes, two popular options are pipe relining or pipe replacement. Both methods aim to restore the function of your pipelines, but there are distinct differences you should be aware of.

Key Takeaways

  • Pipe relining is an economical and speedy method to repair damaged pipelines.
  • The lining CIPP is employed in pipe relining.
  • Epoxy resin is used to line the internal areas of the pipe. This cures to create a new inner lining for the old pipeline.
  • Relining pipe is time-efficient and cost-effective and lasts up to 50 years.
  • Traditional pipe replacement involves digging up sections of land in which pipes are located.
  • Replacement of pipes may be required to repair pipes that are severely damaged.
  • A new pipe installed via pipeline replacement has a longer duration (75 or 100 years).
  • Replacement of pipes can be costly and laborious.
  • The decision between pipe relining versus pipe replacement is based on the extent of damage.

In this article, we’ll talk about pipe relining vs. pipe replacement, and find the one that best suits your needs more.

How do you define Pipe Relining?

Relining pipes or Cured-In Place Pipe (CIPP) Lining is a state-of-the-art repair process that provides a cost-effective, swift solution for restoring damaged pipelines.

Here’s how it is done:

  1. A technician cleans the pipeline using high-pressure water jetting or mechanical cleaning.
  2. Then, they put epoxy resin made from polyester or fiberglass liner inside the pipeline.
  3. The liner is cured, creating a new inner lining within the pipeline that’s as strong as a brand new one.

Benefits Pipe Relining

  • Time-efficient – It usually takes only 2 to 3 hours of time to accomplish the entire procedure, compared to excavating for several days with traditional pipe replacement techniques.
  • Cost-effective - Because there is no excavation or removal needed in the pipe relining process this method can save nearly half of the amount you have to pay for repairs that are traditional.
  • Durability – The lining created through pipe relining can last up to 50 years!

Pros and Cons of Pipe Relining

  • Not suitable for very damaged pipes - If you have significant damage such as cracks, collapses, or joints that are misaligned 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 areas could contain broken pipes, or very damaged ones due to negligence or aging.

The steps below are the most traditional pipe replacements:

  1. An excavation team digs up access to the deteriorated underground pipe.
  2. The old pipeline is detached and dug out, creating a lot of debris which needs to be removed.
  3. Then, they construct another pipeline in place of the one they had previously installed.

Pros and Cons of Pipe Replacement

  • Suitable for severely damaged pipes - When you need to replace pipes with significant corrosion or damage, pipe replacement is the best option.
  • Long lifespan – The new pipeline, which is replaced by pipe has a long life (75 or 100 years) which makes it a great option for homeowners looking for a permanent solution.

Pros of Pipe Replacement

  • Extraction work that is costly to replace pipes can be time-consuming and expensive.
  • The process is time-consuming. Traditional pipe replacements can take weeks depending on the size of the work and the extent of excavation required.

Which option should you pick?

The decision of relining or replacing your pipes is largely based on the amount of damage caused. If your pipes are suffering from small damages, like cracks or leaks of a minor size, replacing them is likely to be the better option since it’s less expensive and also quicker than traditional pipe replacements.

However, if you have severe damages like collapses or breaks it is recommended to consider replacing the pipe with a traditional method, even though it might 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

Frequently Asked Questions

What is pipe relining?

Pipe relining is a process that creates a brand new pipe inside the existing damaged pipe. It is accomplished by inserting a flexible liner in the existing pipe, and then placing it into place. Once it is cured, the new pipe does not have joints or seams that improve its structural integrity.

What does traditional pipe replacement differ from relining pipe?

Traditional replacement of pipes involves excavating and physically dismantling old pipes before replacing them with new ones. In contrast, pipe relining does not require excavation. Instead, it’s completed by using technology that permits pipeline repair without digging up large portions of land.

Which method is cheaper - pipe relining or traditional replacement?

Pipe relining typically costs less than traditional methods of repair to pipelines since there is no cost related to excavation, or other methods necessary for removing and replacing old pipes.

Can all kinds of pipes be changed?

Not all types of pipes are relined in a successful manner. Ultimately, your plumber should examine your particular situation to determine whether it’s possible to line your particular type of pipes. But, the majority of contemporary pipes are repaired using this method.

How long does the process of relining pipes take?

The exact length of time needed for the procedure is contingent upon various factors such as location, climate and the type of damage. However the average pipe Relining job typically takes around 2 days based on the amount of meters need to be lined..

In conclusion, if you are looking to stay clear of invasive excavation work and save cash while restoring your damaged pipelines’ performance to their fullest you should consider using our Local Sydney Blocked Drains ‘s fast and effective pipeline relining services. Contact us!

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