Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Sydney Blocked Drains Plumbers on 9 Oct 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 functionality of your pipes, however they differ in a way that you need to know.

Key Takeaways

  • Relining pipes is an affordable and speedy method to repair damaged pipelines.
  • Linings made of CIPP are used for the relining of pipes.
  • Epoxy resin is used to line the internal areas of the pipe. This is cured to form a new inner lining in the pipe.
  • Relining pipelines is time-efficient, economical, and can 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 pipeline replacement has a longer duration (75 -100 years).
  • Replacement of pipes is expensive and time-consuming.
  • The decision between pipe relining or pipe replacement will depend on the severity of damage caused.

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

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

Pipe relining or Cured-In-Place Pipe (CIPP) Lining is a state of the art repair procedure that offers a cost-effective and fast solution for repairing damaged pipelines.

Here’s how it works:

  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 gets dried, creating a new inner liner within the pipeline that’s as robust as a new one.

The advantages of Pipe Relining

  • Time-efficient – It usually takes just 2 to three hours in order to finish the entire procedure, compared to excavating for many days using traditional pipe replacement methods.
  • Cost-effective because no excavation or removal is necessary for pipe relining this method can save nearly half of the price you’d have to pay for repairs that are traditional.
  • Durability – The lining made by pipe relining could last for 50 years!

Con’s of Pipe Relining

  • Not recommended for extremely damaged pipes. If there are serious damages like collapses, cracks, or joints that are misaligned 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 sections could include broken pipes, or very damaged ones caused by age or neglect.

The following steps comprise most traditional replacements for pipes:

  1. A team of excavation workers digs access to the deteriorated underground pipe.
  2. The pipeline was ripped off and dug up, generating a lot of debris which needs to be removed.
  3. Then, they install the new pipeline on top of the old one.

Pros and Cons of Pipe Replacement

  • Perfect for severely damaged pipes If you have to replace pipes that have severe corrosion or damage, pipe replacement is the best option.
  • Long lifespan – The new pipeline installed through pipe replacement is long-lasting (75 up to 100 years) which makes it a great choice for homeowners in search of an option that is long-lasting.

Pros of Pipe Replacement

  • It is expensive – Excavating work required for pipe replacement could be time-consuming and expensive.
  • Long-lasting – Pipe replacements can take a few weeks based on the size of the work and the extent of excavation required.

Which one should you choose?

The choice between replacement or relining your pipes mostly depends on the amount of damage caused. If your pipes suffer from minor damages like cracks or minor leaks, then the relining process is probably a more appropriate choice since it’s less expensive as well as quicker than replacement of pipes using traditional methods.

If there are major damage, such as collapses or broken pipes, then you should consider conventional pipe replacement, though it will cost more and may 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 which consists of creating a new pipe inside the existing damaged pipe. It is accomplished by inserting a flexible liner into the old pipe and then curing it in place. After curing, the new pipe does not have joints or seams that improve the structural integrity of the pipe.

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

Traditional pipe replacement involves{ excavating and| digging and|| digging up and} physically taking away old pipes, before replacing them with new ones. The alternative, pipe relining doesn’t require excavation; instead, it’s completed using technology that allows for repairs to pipelines without digging vast areas of land.

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

Pipe relining typically costs less than traditional methods for pipeline repair as there are no expenses related to excavation or other procedures needed for removing and replacing old pipes.

All kinds of pipes can be reflined?

Some types of pipes can be relined successfully. In the end, your plumber will need to examine your situation to determine if it is feasible to line your specific type of pipes. But, the majority of current pipes could be fixed by this procedure.

How long will the pipe relining process take?

The exact duration of the process depends on different elements like location, environment, and type of damage; however, the average Pipe Relining job usually takes 2-3 days, depending on the number of metres need to be lined..

In conclusion, if are looking to stay clear of invasive excavation work and save cash as you restore your pipelines’ performance to their fullest Consider utilizing our Sydney Blocked Drains Plumbers ‘s quick and efficient pipeline relining services. Contact us today!

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