Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Blocked Drains Plumbing Sydney on 31 Dec 2025

In the case of fixing damaged pipes, the two most common solutions are pipe relining and pipe replacement. Both approaches aim to restore the functionality of your pipelines, but there are some distinct differences you should be aware of.

Key Takeaways

  • Pipe relining is an economical and fast method for repairing damaged pipelines.
  • CIPP lining is used in pipe relining.
  • Epoxy resin is utilized to line the inner portions of the pipe. It cures to creates a new inner lining inside the pipeline.
  • Relining pipes is efficient, cost-effective and lasts up to 50 years.
  • Traditional pipe replacement involves excavation of areas on the property in which pipes are situated.
  • Pipe replacement may be necessary for severely damaged pipes.
  • A new pipe installed via the replacement of a pipe has a long time span (75 or 100 years).
  • Replacement of pipes can be costly and lengthy.
  • The decision between pipe relining or pipe replacement depends on the level of damage that has been caused.

In this article, we’ll discuss pipe relining in comparison to. pipe replacement, and find out which option will meet your requirements better.

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 fast solution for repairing damaged pipelines.

Here’s how it is done:

  1. Technicians clean the pipeline with high-pressure jetting or mechanical cleaning.
  2. Then, they apply epoxy resin made of fiberglass or polyester liner to the existing pipeline.
  3. The liner gets dried to form a brand new inner liner within the old pipeline that’s just as long-lasting as the new one.

Benefits Pipe Relining

  • Time-efficient: It generally takes about 2 to 3 hours of time to accomplish the whole process, as opposed to digging for several days with traditional pipe replacement methods.
  • Cost-effective because no excavation or removal is necessary for pipe relining It can save you nearly half of what you would be paying for conventional repairs.
  • Durability – The lining created through pipe relining can last for up to 50 years!

The cons of Pipe Relining

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

What 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 caused by lack of maintenance or age.

The steps below are the most traditional pipe replacements:

  1. An excavation team digs up access to the damaged underground pipe.
  2. The pipeline was ripped off and dug up, generating a lot of debris which needs to be removed.
  3. They then install an entirely new pipeline instead of the one they had previously installed.

Pros and Cons of Pipe Replacement

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

Pros and Cons of Pipe Replacement

  • Costly – Excavation work requred to replace pipes can be lengthy and expensive.
  • Time-consuming – Traditional pipe replacements can take a few weeks based on the nature of the project and the depth of excavations needed.

Which one should you choose?

The decision on whether to go with relining or replacing your pipes mostly is contingent on the level of damage caused. If your pipes suffer small damages, like cracks or minor leaks, replacing them is likely to be a more appropriate choice since it’s less costly and is also faster than replacement of pipes using traditional methods.

However, if there are serious injuries, like breaks or collapses the best option is conventional pipe replacement, though it could be more costly and takes 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?

Relining pipes is a procedure which consists of creating a new pipe inside the existing damaged pipe. It is accomplished by inserting a flexible liner in the old pipe and making it a permanent fixture. After it has been cured, the newly formed pipe does not have joints or seams, which enhances its structural integrity.

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

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

Which method is cheaper - the pipe relining method or traditional pipe replacement?

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

Can all kinds of pipes be lined?

Some types of pipes are relined in a successful manner. In the end, your plumber will have to inspect the situation to determine if it’s feasible to line the particular kind of pipes. But, the majority of new pipes may be fixed using this technique.

How long will the pipe relining process take?

The precise time needed for the process is dependent on various variables like location, environment and the type of damage; however the average Pipe Relining task usually takes between 2 and 3 days, depending on the number of meters need to be lined..

In conclusion, if you wish to avoid digging work and save money as you restore your pipelines’ function to its maximum you should consider using our Blocked Drains Plumbing Sydney ‘s swift and efficient pipeline relining service. Get in touch with us!

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