Understanding the Differences Between Pipe Relining and Pipe Replacement

Posted by Melbourne Blocked Drains Plumber on 16 Oct 2025

When it comes to fixing damaged pipes techniques are pipe relining as well as replacement of pipes. Both solutions aim to bring back the original function of your pipelines, but there are some distinct differences you should be aware of.

Key Takeaways

  • Relining pipes is an affordable and fast method for repairing damaged pipelines.
  • Linings made of CIPP are used for the relining of pipes.
  • Epoxy resin is used to line the inner parts of the pipe which cures to creates a new inner lining within the pipe.
  • Relining pipe is time-efficient and cost-effective, and will last up to 50 years.
  • The traditional method of replacing pipes is digging up sections of land where pipes are.
  • A replacement pipe may be needed for pipes that are badly damaged.
  • A brand-new pipeline installed with pipeline replacement has a longer life span (75 or 100 years).
  • Replacement of pipes is expensive and laborious.
  • The decision between pipe relining and replacement depends on the level of damage caused.

In this post, we’ll look at pipe relining as opposed to. replacing pipes and figure out which option will meet your requirements better.

How do you define Pipe Relining?

Relining pipes or Cured-In Place Pipe (CIPP) Lining is a state-of-the-art repair process that offers a cost-effective and fast solution for repairing 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 lining within the old pipeline that’s just as durable as a new one.

Advantages Pipe Relining

  • Time-efficient – It usually takes about 2 to three hours for the whole procedure, compared to excavating for days in traditional pipe replacement techniques.
  • Cost-effective - Because there is no excavation or removal required in pipe relining this method can save nearly half of the amount you be paying for conventional repairs.
  • Durability – The lining formed by pipe relining can last up to 50 years!

Pros and Cons of Pipe Relining

  • Not suitable for severely damaged pipes. If you have significant damage such as cracks, collapses or joints that are misaligned in your sewer line, then pipe relining could not be possible.

What exactly 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 are typical of traditional pipe replacements:

  1. An excavation team digs up access to the degraded underground pipe.
  2. The pipeline that was previously in use is detachment and dug out, creating a lot of debris which needs to be removed.
  3. They then install an entirely new pipeline instead of the one they had previously installed.

Benefits of Pipe Replacement

  • Perfect for severely damaged pipes Ideal for severely damaged pipes – If you must replace pipes that are suffering from significant corrosion or damage, pipe replacement is the best option.
  • Long-lasting – The latest pipeline, which is replaced by pipe has a long life (75 up to 100 years) making it an ideal choice for homeowners in search of a permanent solution.

Cons of Pipe Replacement

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

Which one is best for you?

The decision to choose between relining or replacing your pipes mostly depends on the degree of damage caused. If your pipes suffer from minor issues like cracks, or minor leaks, replacing them is likely to be the best option, as 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 will cost more and will 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 Questions

What is pipe relining?

Relining pipes is a process which consists of creating a new pipe within the existing damaged pipe. It is accomplished by inserting a flexible liner in the existing pipe, and then the process of curing it. Once it is cured, the new pipe is completely free of joints and seams, which enhances the structural integrity of the pipe.

How does traditional pipe replacement differ from relining pipe?

Traditional pipe replacement involves digging and physically removing old pipes, before replacing them with new ones. The alternative, pipe relining does not require excavation. Instead it’s accomplished with the help of technology, which allows repair of pipelines without digging huge areas of land.

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

Relining pipes typically cost less than traditional methods for pipe repair because there is no cost related to excavation and other techniques required for the removal and replacement of old pipes.

Can all types of pipes be reflined?

Certain types of pipes can be relined successfully. Your plumber will have to inspect your pipe to determine if it’s feasible to line your specific kind of pipes. However, most modern pipes can be relined using this procedure.

How long does the process of relining pipes last?

The exact duration of the process is dependent on various variables like the location, the environment, and type of damage. However the average Pipe Relining job typically takes around 2 days, depending on how many metres require lining..

In conclusion, if are looking to stay clear of invasive excavation work and save money while restoring your damaged pipelines’ performance to their fullest take a look at our Melbourne Blocked Drains Plumber ‘s swift and efficient pipe relining services. Get in touch with us!

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