Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Perth Blocked Drains Plumbing on 6 Feb 2026

In the case of fixing damaged pipes, two common options are pipe relining or replacement of pipes. Both approaches aim to bring back the original function of your pipes, however there are distinct differences you need to know.

Key Takeaways

  • Relining pipelines is a cost-effective and speedy method to repair damaged pipelines.
  • The lining of CIPP is utilized in pipe relining.
  • Epoxy resin is utilized to line the inner parts of the pipe. The resin is cured to form a new inner lining in the pipeline.
  • 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 where pipes are.
  • A replacement pipe may be needed for severely damaged pipes.
  • A brand-new pipeline installed with pipe replacement has a long life span (75 or 100 years).
  • Pipe replacement is costly and long-lasting.
  • The decision between pipe relining or pipe replacement will depend on the severity of damage caused.

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

Is Pipe Relining a thing?

Pipe relining, also known as Cured-In-Place pipe (CIPP) Lining is a modern repair method that offers a cost-effective and swift solution for restoring damaged pipelines.

Here’s how it is done:

  1. A technician cleans the pipeline by using high-pressure water jetting or mechanical cleaning.
  2. Then, they apply epoxy resin made of polyester or fiberglass liner inside the existing pipeline.
  3. The liner is cured, creating a new inner lining inside the old pipeline, which is just as robust as a new one.

Advantages Pipe Relining

  • Time-efficient: It generally takes about 2 to three hours for the entire process compared with excavating for days in traditional methods of replacing pipes.
  • Cost-effective - Because no excavation or removal is necessary for pipe relining, it can save almost half of the amount you have to pay for repairs that are traditional.
  • Durability – The new lining created through pipe relining can last for 50 years!

Pros and Cons of Pipe Relining

  • Not recommended for extremely damaged pipes. If there are significant damages such as cracks or collapses or misaligned joints in your sewer line, then pipe relining may 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 corrosion-prone ones, due to negligence or aging.

The following steps comprise most traditional replacements for pipes:

  1. An excavation crew digs access to the deteriorated underground pipe.
  2. The old pipeline is detached and dug out producing much debris that requires disposing of.
  3. Then, they install another pipeline in place of the previous one.

Pros of Pipe Replacement

  • Ideal for pipes that have been severely damaged - When you need to replace pipes with severe corrosion or damage, pipe replacement is the best solution.
  • Long life – The brand new pipeline replaced with pipe is long-lasting (75 up to 100 years) making it an ideal choice for homeowners in search of an ongoing solution.

Pros and Cons of Pipe Replacement

  • Costly – Excavation work requred for pipe replacement could be costly and time-consuming.
  • The process is time-consuming. Traditional pipe replacements can take a few weeks based on the size of the work and the depth of excavations that are required.

Which one should you choose?

The choice between relining or replacing your pipes mostly depends on the level of damage caused. If your pipes suffer from minor damages like cracks or leaks of a minor size, replacing them is likely to be a more appropriate choice since it’s less costly as well as quicker than replacement of pipes using traditional methods.

But if there are severe damages like collapses or breaks and breaks, you must consider replacing the pipe with a traditional method, even though it may be more expensive 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

FAQ

What is the process of relining pipes?

Relining pipes is a procedure that creates a brand new pipe within the existing damaged pipe. This is done by inserting a flexible liner in the old pipe and then making it a permanent fixture. Once it is cured, the new pipe is completely free of joints and seams that improve its structural strength.

How does the traditional replacement of pipes differ from relining pipe?

Traditional replacement of pipes involves digging and physically cutting away the old pipe, and then replacing them with brand new ones. However, pipe relining does not require excavation. Instead it’s accomplished by using technology that permits pipeline repair without digging up large portions of land.

Which is more cost-effective - pipe relining or traditional pipe replacement?

Relining pipelines typically costs less than traditional methods for repair to pipelines since there are no costs associated to excavation or other procedures that are required to remove and replace old pipes.

Can all types of pipes be lined?

There are a few types of pipes that can be successfully relined. The plumber will need to examine your situation to determine if it’s feasible to line your particular type of pipes. However, the majority of contemporary pipes are repaired using this procedure.

How long does the pipe relining process take?

The precise time needed for the process is dependent on various factors such as location, climate and the 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 wish to avoid digging work and save money while restoring damaged pipelines’ full function you should consider using our Perth Blocked Drains Plumbing ‘s swift and efficient pipeline relining service. Contact us!

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