Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Melbourne Blocked Drains Plumbers on 7 Oct 2025

In the case of fixing damaged pipes, the two most common solutions are pipe relining and pipe replacement. Both solutions aim to bring back the original function of your pipes, however there are some distinct differences are important to understand.

Key Takeaways

  • Pipe relining is a cost-effective and fast method for repairing damaged pipelines.
  • CIPP lining is used in the relining of pipes.
  • Epoxy resin is used to line the inside portions of the pipe. It is cured to form a new inner lining within the pipe.
  • Pipe relining is time-efficient, cost-effective, and will last for up to 50 years.
  • The traditional method of replacing pipes is excavation of areas on the property in which pipes are situated.
  • Replacement of pipes may be required for pipes that are badly damaged.
  • A new pipe installed via pipe replacement has a lengthy life span (75 to 100 years).
  • The cost of replacing pipes is high and time-consuming.
  • The decision between pipe relining and replacement depends on the degree of damage.

In this article, we’ll discuss pipe relining vs. replacing pipes and figure out which option will meet your needs better.

The term "pipe relining" is used to describe the process of repairing pipes.

Pipe relining, also known as Cured-In-Place pipe (CIPP) Lining is a state of the art repair procedure 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. Then, they put epoxy resin made of fiberglass or polyester liner to the existing pipeline.
  3. The liner is cured and forms a new liner within the old pipeline that’s just as durable as a new one.

Benefits Pipe Relining

  • Time-efficient: It generally takes about 2 to 3 hours of time to accomplish the entire process compared with excavating for days for traditional pipe replacement techniques.
  • Cost-effective - Because there is no excavation or removal necessary for pipe relining It can save you nearly half of the amount you be paying for conventional repairs.
  • Durability – The lining created through pipe relining can last up to 50 years!

Cons of Pipe Relining

  • Not recommended for extremely damaged pipes. If you have significant damage like collapses, cracks, or misaligned joints within 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 damaged pipes, or highly damaged ones due to lack of maintenance or age.

The following steps comprise most traditional pipe replacements:

  1. A team of excavation workers digs access to the damaged 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 construct an entirely new pipeline instead of the previous one.

Benefits of Pipe Replacement

  • It is suitable for pipes with severe damage - When you need to replace pipes that have significant damage or corrosion, pipe replacement is the best solution.
  • Long-lasting – The latest pipeline, which is replaced by pipe is long-lasting (75 or 100 years) making it an ideal solution for homeowners who want an ongoing solution.

Pros and Cons of Pipe Replacement

  • Costly – Excavation work requred to replace pipes can be lengthy and expensive.
  • Long-lasting – Pipe replacements can take a few weeks based on the scope of work and the depth of excavations needed.

Which one is best for you?

The decision on whether to go with replacement or relining your pipes is mostly based on the extent of damage caused. If your pipes are suffering from small damages, like cracks or minor leaks, it is likely that relining is the better option since it is less costly and faster than replacement of pipes using traditional methods.

However, if there are serious injuries, like breaks or collapses it is recommended to consider replacing the pipe with a traditional method, even though it might cost more 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

Frequently Asked Question

What is pipe relining?

Relining pipes is a procedure that involves creating a new pipe in the damaged pipe. This is done by inserting a flexible liner into the old pipe and making it a permanent fixture. Once it is cured, the new pipe is completely free of joints and seams that improve its structural integrity.

What does traditional pipe replacement differ from relining pipe?

Traditional pipe replacement involves digging up and physically taking away old pipes, after which they are replaced with new ones. The alternative, pipe relining isn’t a requirement for excavation. Instead it’s done using technology that allows for pipe repair without digging up large areas of land.

Which one is less expensive - pipe relining or traditional pipe replacement?

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

Can all kinds of pipes be lined?

Not all types of pipes can be successfully relined. Your plumber will need to examine the situation to determine if it is feasible to line your specific kind of pipes. However, the majority of new pipes may be fixed by this technique.

How long does the process of relining pipes take?

The precise time needed for the process is dependent on various aspects like location, environment and type 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 would like to steer clear of digging works and save money as you restore your pipelines’ functionality, consider opting for our Melbourne Blocked Drains Plumbers ‘s fast and effective pipe relining solutions. Contact us today!

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