Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Melbourne Blocked Drains Plumbing on 21 Mar 2026

In the case of fixing damaged pipes, the two most common techniques are pipe relining as well as pipe replacement. Both solutions aim to restore the function of your pipelines, but there are distinct differences are important to understand.

Key Takeaways

  • Pipe relining is an economical and speedy method to repair damaged pipelines.
  • CIPP lining is used in pipe relining.
  • Epoxy resin is utilized to line the inner parts of the pipe which is cured to form a new inner lining for the pipeline.
  • Relining pipe is time-efficient and cost-effective, and can last 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 in the case of pipes that have been severely damaged.
  • A new pipe installed via pipe replacement has a lengthy lifespan (75 -100 years).
  • Replacement of pipes is expensive and time-consuming.
  • The decision between pipe relining versus pipe replacement depends on the level of damage.

In this article, we’ll go over pipe relining as opposed to. pipe replacement, and find out which option will meet your requirements more.

What is Pipe Relining?

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

Here’s how it works:

  1. Technicians clean the pipeline with high-pressure water jetting or mechanical cleaning.
  2. Then, they apply epoxy resin made from fiberglass or polyester liner in the pipeline.
  3. The liner cures by forming a new liner within the old pipeline that’s as durable as a new one.

Benefits Pipe Relining

  • Time-efficient: It generally takes only 2 to 3 hours of time to accomplish the whole procedure, compared to excavating for days in traditional pipe replacement techniques.
  • Cost-effective - Because no excavation or removal is needed in the pipe relining process It can save you nearly half of the amount you be paying for conventional repairs.
  • Durability – The new lining formed by pipe relining can last for up to 50 years!

Pros and Cons of Pipe Relining

  • Not suitable for the most damaged pipes. If you have significant damage such as cracks, collapses or joints that aren’t aligned properly within 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. These areas could contain the collapsed pipes as well as extremely damaged ones due to negligence or aging.

The following steps comprise most traditional pipe replacements:

  1. An excavation team digs up access to the damaged underground pipe.
  2. The pipeline that was previously in use is detachment and dredged out, producing a lot debris that must be cleared away.
  3. Then, they install the new pipeline on top of the old one.

Pros of Pipe Replacement

  • Perfect for severely damaged pipes - When you need to replace pipes that are suffering from severe corrosion or damage, pipe replacement is the best solution.
  • Long life – The brand new pipeline installed through pipe replacement has a long lifespan (75 or 100 years) which makes it a great choice for homeowners in search of an ongoing solution.

Pros and Cons of Pipe Replacement

  • The work of excavation required to replace pipes can be long and costly.
  • Long-lasting – Pipe replacements can take weeks depending on the scope of work and the depth of excavations that are required.

Which one should you choose?

The decision of either relining or repairing your pipes is mostly based on the level of damage caused. If your pipes suffer minor issues like cracks, or leaks that are minor, replacing them is likely to be the better option since it is less costly as well as quicker than traditional pipe replacements.

However, if you have severe damage such as breaks or collapses and breaks, you must consider 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

FAQs

What is pipe relining?

Relining a pipe is a procedure which involves the creation of a new pipe within the existing damaged pipe. It is accomplished by inserting a flexible liner inside the old pipe and placing it into place. After curing, the new pipe does not have joints or seams, which enhances its structural strength.

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

Traditional replacement of pipes involves digging and physically dismantling old pipes and then replacing them with brand new ones. However, pipe relining isn’t a requirement for excavation. Instead it’s carried out using technology that allows for pipe repair without digging up huge areas of land.

Which option is less expensive: pipe relining or traditional pipe replacement?

Pipe relining typically costs less than the traditional methods of pipeline repair as there is no cost related to excavation or other methods that are required to remove and replace old pipes.

All kinds of pipes can be reflined?

Some types of pipes can be successfully relined. Your plumber will have to inspect your particular situation to determine whether it’s possible to line your particular type of pipes. However, most modern pipes can be lined using this method.

How long will the pipe relining process take?

The precise time needed for the process depends on different elements like location, environment and the type of damage; however the average pipe Relining process typically takes about 2 days, depending on the number of meters need to be lined..

In the end, if you want to avoid invasive excavation work and save cash in the process of restoring your damaged pipelines’ performance to their fullest, consider opting for our Melbourne Blocked Drains Plumbing ‘s quick and efficient pipe relining solutions. Contact us!

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