Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Sydney Blocked Drain Plumbing on 30 Mar 2026

In the case of fixing damaged pipes, two popular techniques are pipe relining as well as pipe replacement. Both of these methods are designed to restore the full function of your pipelines, but they differ in a way that are important to understand.

Key Takeaways

  • Relining pipelines is a cost-effective and fast method for repairing damaged pipelines.
  • The lining CIPP is employed in pipe relining.
  • Epoxy resin is used to line the inside parts of the pipe. The resin is cured to form a new inner lining within the old pipeline.
  • Relining pipelines is time-efficient, cost-effective and lasts up to 50 years.
  • The traditional method of replacing pipes is digging up areas of the property where pipes are located.
  • The replacement of pipes is often necessary for severely damaged pipes.
  • A brand-new pipeline installed with the replacement of a pipe has a long time span (75 or 100 years).
  • Replacement of pipes is expensive and lengthy.
  • The choice between pipe relining and pipe replacement depends on the degree of damage.

In this article, we’ll discuss pipe relining as opposed to. pipe replacement, and find out which one will suit your needs more.

How do you define Pipe Relining?

Relining pipes or Cured-In Place Pipe (CIPP) Lining is a cutting-edge repair method that provides a cost-effective and fast solution for repairing damaged pipelines.

Here’s how it works:

  1. A technician cleans the pipeline with high-pressure jetting or mechanical cleaning.
  2. Then, they apply epoxy resin made from polyester or fiberglass liner inside the pipeline.
  3. The liner is cured by forming a new liner within the pipeline that’s as long-lasting as the new one.

Benefits Pipe Relining

  • Time-efficient – It usually takes about 2 to 3 hours to complete the whole process, as opposed to digging for many days using traditional pipe replacement methods.
  • Cost-effective Since no excavation or removal is necessary for pipe relining It can save you nearly half of the amount you be paying for conventional repairs.
  • Durability – The lining made by pipe relining could last up to 50 years!

Con’s of Pipe Relining

  • Not suitable for the most damaged pipes. If there are major 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 the collapsed pipes as well as extremely corrosion-prone ones, due to the effects of time or neglect.

The following steps comprise most traditional replacements for pipes:

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

Pros and Cons of Pipe Replacement

  • Suitable for severely damaged pipes If you have to replace pipes with significant damage or corrosion, pipe replacement is the ideal solution.
  • Long life – The brand new pipeline that is installed by pipe replacement has a long life (75 up to 100 years) making it an ideal alternative for homeowners seeking an option that is long-lasting.

Pros of Pipe Replacement

  • The work of excavation required for the replacement of pipes is long and costly.
  • Long-lasting – Pipe replacements may take weeks depending on the nature of the project and the depth of excavations needed.

Which one should you choose?

The decision to choose between replacement or relining your pipes is mostly based on the amount of damage caused. If your pipes suffer from minor damages like cracks or minor leaks, relining would probably be a more appropriate choice since it’s less expensive and is also faster than traditional pipe replacements.

If there are major damage, such as collapses or broken pipes the best option is an alternative to replacing your pipe, although it might cost more and will 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 process which involves the creation of a new pipe in the damaged pipe. It is accomplished by inserting a liner that is flexible into the old pipe and then the process of curing it. Once cured, the new pipe is completely free of joints and seams, which enhances its structural integrity.

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

Traditional replacement of pipes involves excavating and physically removing old pipes, after which they are replaced with new ones. However, pipe relining does not require excavation. Instead it’s carried out by using technology that permits pipeline repair without digging up vast areas of land.

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

Relining pipelines typically costs less than the traditional methods of pipeline repair as there is no cost related to excavation, or other methods needed for removing and replacing old pipes.

Can all kinds of pipes be lined?

There are a few types of pipes that are relined effectively. Ultimately, your plumber will have to inspect the situation to determine if it’s possible to line your specific type of pipes. However, most modern pipes can be repaired using this technique.

How long does the process of pipe relining take?

The precise time needed for the procedure varies based on elements like location, climate and the kind of damage; however, the average pipe Relining process typically takes about 2 days, depending on how many meters need to be lined..

In conclusion, if want to avoid invasive excavation work and save cash as you restore your pipelines’ functionality take a look at our Sydney Blocked Drain Plumbing ‘s rapid and effective pipe relining services. Contact us!

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