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Pipe Relining

Which Is Better: Pipe Relining or Pipe Replacement?

Broken or damaged pipes can be a big headache

Nobody likes getting a plumbing repair bill. But if you don’t fix your pipes soon, you can end up with massive water damage and costly repairs. That’s why it’s so important to know the difference between pipe relining and pipe replacement.

If you own a home with water pipes, you probably pay a lot of attention to them. After all, what you put into your house is really important—and your home’s plumbing system is one of the primary routes by which water flows throughout the entire building. That means that, if something goes wrong with your home’s plumbing (like, say, a major leak), it can quickly cause thousands of dollars in damage and lead to some very serious and costly repairs. But, with the proper maintenance, you can dramatically extend the life of your water pipes… and avoid many of the expensive repair bills you’d otherwise have to deal with. So, how do you tell if your water pipes need to be replaced or simply cleaned and relined? It really depends on the condition of the pipes. If they seem fine, then perhaps it’s time to schedule a “pipeline inspection.” That’s when your local plumber will drop by and take a look at things. We’ll check your faucets, water heater, and all other places where water might possibly be leaking

What is Pipe Relining?

Pipe relining is the process of filling the gaps between a pipe’s interior and exterior walls with a specialized material. This prevents water and other elements from seeping into the interior of the pipe and causing corrosion and potentially costly repairs. Corrosion is the deterioration of a metal caused by exposure to oxygen and other substances.

How is Pipe Relining done?

Step 1: The plumber will check the sewage system for problems and take a look inside the pipes using a drain camera.

Step 2: A specially designed tube is then inserted inside the damaged pipe, which will close off the damaged section of the pipe.

Step 3: After inserting the tube in place, the tube needs to fit snugly against the walls of the pipes, therefore, the plumber inflates the tube.

Step 4:  A strong epoxy resin that is coated outside this tube helps it to stick to the pipe.

Step 5: A seamless seal is formed between the damaged pipe and the new tube, the resin endures the cure for a long time.

Advantages of Pipe Relining


If you want to avoid breaking the bank, it might be time to consider traditional pipe replacement. However, this method can involve a lot of labor and surface finishes have to be dug up and reinstalled. This translates into a higher financial cost. “Pipe relining” is a much more affordable alternative. There’s no digging up or otherwise disturbing the existing structure, and the finished product will perform just as well (if not better) than a set of new pipes.

Effective method

When it comes to repairing damaged or broken pipes, the process of pipe relining is much more effective than replacing the pipe. For several reasons.

If you are having a pipe replacement job done, you are literally paying the plumber to break down walls, dig up the yard, and damage the concrete slab to access the old pipes.

When it comes to pipe relining, the requirement is to access a single, tiny diameter hole. This process is extremely cost-effective compared to replacing your pipes. The convenience of this is that you don’t have to dispose of the old pipes and pay a landscaper to fix your damaged landscape like in pipe replacement.

The pipe has a lifespan of 30 years. The relined pipes are stronger than a new pipe and are impervious to tree roots – something all Sydney homeowners should be aware of.

Less time consuming

There are many instances where a pipe needs to be relined and this is one of the quickest ways to do it. It’s also an efficient way when other methods are not possible. This is a good thing because if the water supply to your home is important to you, you’ll want to use the least amount of time necessary to fix the problem.

Once the pipe is relined it will be fully functional again in a few hours, and a replacement will take longer to be produced.


Pipe relining technology guarantees to make your pipes stronger and last longer. It bonds to the interior of the pipe, creating an impenetrable layer that prevents corrosion. The resin sets in and the relined pipe will hold its own structure which is quite strong and durable. In many cases, a relined pipe will have a longer life expectancy than newly replaced pipes. 

Best Protective Measure

Preventive measure is an important part of owning a home and is often overlooked. By getting on top of issues like pipe relining, you’ll be surprised at how much time and money you’ll be saving in the long run. As a bonus, since the relined pipes prevent moisture from seeping out and growing tree roots, you may even be able to get away with not digging up any of your yard.

Disadvantages of Pipe Relining

Sometimes, replacing a section of pipe is the best option when it comes to repairing or replacing your plumbing system. These occasions include:

  • Your pipes have experienced severe tree root damage, including becoming crushed
  • Your pipes are displaced significantly
  • Your pipes have sags or backfall and are holding water

When you work with an A Sydney Plumber, our plumbers will always start work by finding the source of the problem. They’ll inspect your pipes using CCTV cameras to locate the exact damage and how bad it is. Then they’ll give you all the costs and timelines you need to make the best decision for you.

Alternatives to Pipe Relining

When pipes get old, they tend to crack and leak. Sometimes this is due to poor installation or structural damage, but often it’s just because of normal wear and tear. Pipe relining not only fixes these problems but also prevents many others from happening in the future.

But it’s not always the solution, when the issue is severe and pipe relining is not the way out, we recommend going with the Pipe Replacement method.

What is Pipe Replacement?

One way to fix a water pipe that’s become damaged is to dig it up, remove it and replace it with a new one. This is called the “dig and replace” method of repair.

Pipe replacement is one of the more difficult home improvement projects, mainly due to the disruptive nature of having to dig up your yard. It can be extremely time-consuming and cause you quite a bit of inconvenience, but if done right, it can save you a considerable amount of money.

Once the damaged section has been removed, a new piece of pipe is installed. While this might sound like an easy method, it could turn into a major job very quickly with numerous factors and costs to be considered. The digging, the labor-hire changes, the equipment hire charges, the time your pipe network will be “down” and unusable, not to mention the cost of the new pipes and any other costs involved in repairing junctions, drains and then putting everything back the way it was.

It’s also for these reasons homeowners prefer pipe relining to pipe replacement. It is faster, easier and less expensive.

If you’re not sure which will be the best approach for your plumbing, you can speak with our team at A Sydney Plumber. Chat to us today by calling (02) 9064 2848.

When should you choose Pipe Replacement?

  • Pipes that are accessible and not far down below the surface may be easy to repair or replace if they get damaged. They may also be cheap because there isn’t much digging and replacing involved.
  • Replacing pipes is an expensive proposition. You should only do this if absolutely necessary. Badly misaligned pipes can lead to many other problems, so it’s better to correct the situation before it gets worse.
  • If the pipes are seriously damaged, it may not be possible to repair them using pipe relining. In this case, it’ll be necessary to dig up the damaged section of the street and replace it with new piping.

How much does Pipe Relining Cost?

There is no definitive answer to the question of how much it will cost to repair or replace your sewer system. However, there are many variables that will influence the final cost, including:

  • Location and accessibility of the pipe
  • The condition of the pipe
  • The diameter of the pipe (smaller width pipes are actually more expensive)
  • Length of the pipe

The cost of a quality pipe relining will vary between $300 and $1000 per metre. However, the first metre will almost always be at a much higher price than the rest of the pipes due to the cost of the equipment setup.


If you don’t know what to do, always trust a pro. The safest option is to consult our experienced plumber for your plumbing issue.

When you need any type of plumbing work done, call A Sydney Plumber. We’ll be happy to help you, and with our experience, we’ll make an accurate and informed decision about what type of repair is needed, and have the technology and expertise to do the job.

Give us a call today on (02) 9064 2848 or request a quote using our online form to learn more about relining sewer pipe vs replacement methods.


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