Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Perth Blocked Drains Plumber on 24 Nov 2025

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

Key Takeaways

  • Relining pipes is an affordable and quick method of repairing damaged pipelines.
  • CIPP lining is used in the relining of pipes.
  • Epoxy resin is utilized to line the inner areas of the pipe. This sets to create a brand new inner lining inside the old pipeline.
  • Relining pipelines is time-efficient, cost-effective, and will last up to 50 years.
  • The traditional method of replacing pipes is excavation of areas on the property where pipes are located.
  • The replacement of pipes is often necessary in the case of pipes that have been severely damaged.
  • A brand-new pipeline installed with the replacement of a pipe has a long life span (75 or 100 years).
  • Replacement of pipes can be costly and long-lasting.
  • The decision between pipe relining or pipe replacement depends on the level of damage that has been caused.

In this post, we’ll look at pipe relining as opposed to. replacing pipes and figure out which one will suit your needs more.

Is Pipe Relining a thing?

Pipe relining or Cured-In-Place Pipe (CIPP) Lining is a state-of-the-art repair process that offers a cost-effective and 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 of fiberglass or polyester liner to the existing pipeline.
  3. The liner gets cured, creating a new inner lining in the old pipeline that’s as long-lasting as the new one.

Advantages Pipe Relining

  • Time-efficient – It usually takes between 2 and 3 hours to complete the whole process, as opposed to digging for many days using traditional pipe replacement techniques.
  • Cost-effective because there is no excavation or removal needed in the pipe relining process It can save you nearly 50% of the cost you’d spend on traditional repairs.
  • Durability – The new liner made by pipe relining could last up to 50 years!

Cons of Pipe Relining

  • Not suitable for the most damaged pipes. If you have significant damage such as cracks, collapses, or misaligned joints 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. The areas may contain collapsed pipes or extremely corroded ones either from the effects of time or neglect.

The steps below are the most traditional replacements for pipes:

  1. An excavation team digs access to the damaged underground pipe.
  2. The pipeline was ripped off and dug out, creating a lot of debris which needs to be removed.
  3. Then, they install an entirely new pipeline instead of the previous one.

Pros and Cons of Pipe Replacement

  • Ideal for pipes that have been severely damaged - When you need to replace pipes that are experiencing severe corrosion or damage, pipe replacement is the most effective option.
  • Longer life span – The new pipeline, which is replaced by pipe has a long life (75 up to 100 years) which makes it a great alternative for homeowners seeking an option that is long-lasting.

Cons of Pipe Replacement

  • Costly – Excavation work requred for pipe replacement can be long and costly.
  • Long-lasting – Pipe replacements may take weeks depending on the nature of the project and the extent of excavation required.

Which option should you pick?

The decision on whether to go with either relining or repairing your pipes mostly depends on the level of damage caused. If your pipes have minor issues like cracks, or minor leaks, replacing them is likely to be a more appropriate choice since it is less costly and is also faster than conventional replacements.

But if there are severe damages like collapses or breaks the best option is replacing the pipe with a traditional method, even 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 the process of relining pipes?

Relining pipes is a process that creates a brand new pipe within the existing damaged pipe. This is done by inserting a flexible liner into the existing pipe, and then curing it in place. After it has been cured, the newly formed pipe is free of joints or seams that improve its structural integrity.

How does traditional pipe replacement differ from relining pipe?

Traditional pipe replacement involves digging and physically cutting away the old pipe and then replacing them with brand new ones. The alternative, pipe relining does not require excavation. Instead it’s accomplished with the help of technology, which allows repairs to pipelines without digging large portions of land.

Which is more cost-effective - liner relining or conventional pipe replacement?

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

All kinds of pipes can be relined?

Certain types of pipes are relined in a successful manner. Ultimately, your plumber will need to examine your particular situation to determine whether it’s possible to line the particular kind of pipes. However, the majority of current pipes could be repaired using this technique.

How long does the process of relining pipes take?

The exact duration of the process is dependent on various elements like location, climate and the kind of damage; however, the average pipe Relining task usually takes between 2 and 3 days, depending on how many metres need to be lined..

If you are looking to stay clear of invasive excavation work and save money while restoring damaged pipelines’ functionality Consider utilizing our Perth Blocked Drains Plumber ‘s swift and efficient pipe relining services. Contact us today!

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