Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Melbourne Blocked Drains Plumbers on 20 Apr 2026

When it comes to fixing damaged pipes, the two most common options are pipe relining or pipe replacement. Both methods aim to restore the full function of your pipelines, but there are distinct differences you should be aware of.

Key Takeaways

  • Pipe relining is an economical and speedy method to repair damaged pipelines.
  • The lining of CIPP is utilized in the relining of pipes.
  • Epoxy resin is used to line the inside portions of the pipe. It sets to create a brand new inner lining inside the pipe.
  • Pipe relining is time-efficient, cost-effective and lasts for up to 50 years.
  • The traditional method of replacing pipes is digging up areas of the property where pipes are.
  • Pipe replacement may be necessary to repair pipes that are severely damaged.
  • A new pipeline installed through pipe replacement has a long time span (75 up to 100 years).
  • Replacement of pipes is expensive and long-lasting.
  • The choice between pipe relining versus pipe replacement depends on the level of damage caused.

In this article, we’ll discuss pipe relining as opposed to. pipe replacement and find out which one will suit your requirements more.

What is Pipe Relining?

Pipe relining or Cured-In-Place Pipe (CIPP) Lining is a cutting-edge repair method that provides a cost-effective, fast solution for repairing damaged pipelines.

Here’s how it is done:

  1. Technicians clean the pipeline with high-pressure water jetting or mechanical cleaning.
  2. Then, they put epoxy resin made of polyester or fiberglass liner inside the existing pipeline.
  3. The liner cures and forms a new lining within the old pipeline that’s just as long-lasting as the new one.

Advantages Pipe Relining

  • Time-efficient: It generally takes between 2 and three hours in order to finish the whole procedure, compared to excavating for days in traditional methods of replacing pipes.
  • Cost-effective because no excavation or removal is necessary for pipe relining this method can save nearly half of what you would pay for traditional repairs.
  • Durability – The lining formed by pipe relining can last up to 50 years!

Pros and Cons of Pipe Relining

  • Not recommended for extremely damaged pipes. If there are serious damages such as cracks, collapses, or joints that are not aligned correctly within your sewer line then pipe relining is not a possibility.

What is Pipe Replacement?

Pipe replacement involves digging up portions of the yard/sidewalk/driveway where underground pipes are located. These sections may include damaged pipes, or highly corroded ones either from the effects of time or neglect.

The following steps make up the majority of traditional pipe replacements:

  1. An excavation team digs up access to the damaged underground pipe.
  2. The old pipeline has been removed and dredged out, producing a lot debris which needs to be removed.
  3. Then, they construct the new pipeline on top of the old one.

Pros and Cons of Pipe Replacement

  • It is suitable for pipes with severe damage - When you need to replace pipes that have severe corrosion or damage, pipe replacement is the most effective option.
  • Longer life span – The new pipeline that is installed by pipe replacement has a lengthy lifespan (75 or 100 years) making it an ideal choice for homeowners in search of the best solution for their home.

Pros and Cons of Pipe Replacement

  • It is expensive – Excavating work required for the replacement of pipes is costly and time-consuming.
  • The process is time-consuming. Traditional pipe replacements could take several weeks, based on the extent of work and depth of excavations required.

Which one is best for you?

The decision on whether to go with either relining or repairing your pipes mostly depends on the extent of damage caused. If your pipes suffer minor damages like cracks or minor leaks, it is likely that relining is an ideal option as it’s less costly and is also faster than conventional replacements.

If there are major damage, such as collapses or broken pipes, then you should consider replacing the pipe with a traditional method, even 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

FAQ

What is pipe relining?

Pipe relining is a procedure which consists of creating a new pipe inside an existing damaged pipe. It is accomplished by inserting a liner that is flexible into the existing pipe, and then curing it in place. After curing, the new pipe has no joints or seams, which increases its structural integrity.

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

Traditional replacement of pipes involves digging up and physically dismantling old pipes and then replacing them with brand new ones. However, pipe relining does not require excavation. Instead it’s carried out by using technology that permits pipe repair without digging up huge areas of land.

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

Pipe relining generally costs less than traditional methods of repair to pipelines since there are no expenses related to excavation or other methods needed for removing and replacing old pipes.

All kinds of pipes can be reflined?

There are a few types of pipes that are relined in a successful manner. In the end, your plumber will need to examine your pipe to determine if it is feasible to line your specific type of pipes. However, most new pipes may be relined with this technique.

How long will the process of pipe relining take?

The exact duration of the process depends on different factors such as location, environment, and type of damage. However the average pipe Relining job typically takes around 2 days depending on how many metres need to be lined..

If you are looking to stay clear of invasive excavation works and save money while restoring damaged pipelines’ full function you should consider using our Melbourne Blocked Drains Plumbers ‘s quick and efficient pipe relining solutions. Get in touch with us!

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