While pipe relining is becoming increasingly popular, and yes, we’re obviously massive fans of the solution (it’s in our name, after all), we believe in keeping things honest. As great as “no-dig” technology is for fixing damaged pipes, it’s not always the perfect fit for every situation. There are some downsides, and in this article, we’ll run through a few. This should help you make a well-informed decision about whether pipe relining is the right solution for your property. Because good plumbing advice should always be transparent, just like your drains.
Disadvantages of Pipe Relining
Pipe relining offers a practical solution for homeowners dealing with pipe damage, especially when excavation isn’t ideal. Instead of replacing the entire line, relining reinforces the existing pipe by sealing all the cracks and weaknesses with a durable protective coating.
Upon final inspection, this revolutionary method not only restores flow but also acts as a permanent fix, offering a long-term solution without the mess and cost of extensive digging.
Still, pipe relining does have some disadvantages.
Not Suitable for Collapsed or Severely Misaligned Pipes
Pipe relining works best when the existing pipe’s structure is still holding up. If a pipe has completely collapsed or there’s not enough structure left to support the liner, then digging up for full pipe replacement might be unavoidable. It’s why a proper CCTV inspection is always the first step, so you know what you’re dealing with and the best way forward.
Higher Upfront Cost Compared to Some Traditional Methods
For quick-fix alternatives like spot repairs or patch jobs, pipe relining can come at a steeper price. However, it’s important to note that relining is like getting a brand new pipe and often lasts decades, while traditional fixes may only buy you a few years. It’s an investment that pays off in long-term reliability, but it might not suit everyone’s immediate budget. A quality plumber can present you with both options for repair jobs.
Potential for Improper Installation
There’s a reason why not all plumbers offer pipe relining as a service—it’s a specialised trade. If the installer lacks experience or performs a rushed job, you could end up with a poorly placed liner, bubbles in the resin, or incomplete curing. Sometimes, they might not complete sufficient drain clearing, which can lead to bigger headaches down the line. Always work with licensed, reputable professionals who know their way around a pipe.
Limited Effectiveness in Some Pipe Materials
Relining doesn’t work with every type of pipe. For example, old pipes that are too corroded or rusted through may not bond properly with the liner, especially old lead pipes or rusted cast iron. In these situations, traditional pipe replacement may still be your best bet.
Your plumber should know which materials to work with.
Reduced Pipe Diameter
Since the pipe relining process involves the liner going inside your existing pipe, it slightly reduces the internal diameter. In most cases, this isn’t a big deal. But in high-demand drainage systems like commercial setups or a large apartment building, just a small reduction can potentially affect efficient drainage. Your plumber should assess and discuss with the building owner or manager whether this water flow will be an issue before proceeding.
Warranty and Longevity Considerations
Some companies offer long warranties, while others provide limited coverage or use uncertified materials. Don’t be shy to ask questions—what kind of resin is being used? Is it WaterMark certified? And how long is the work guaranteed for? A solid warranty from a reputable pipe relining provider gives you peace of mind for years to come.
When Should You Consider Alternatives to Pipe Relining?
While drainpipe relining is a fantastic option in most cases, there are a few situations where it might not be. As previously mentioned, if you’re dealing with a broken pipe that’s completely collapsed or has significant dislodgement, there may not be enough structure left to support the liner. Or perhaps it’s an old, rusted cast iron pipe beyond repair. As a result, traditional drain replacement will be the more reliable route for your plumbing system.
Other times, physical access can be an issue. We’ve had situations where the pipe is buried too deep without a clear entry point or obstructed in a way that prevents proper liner installation. Other times, we’ve even encountered pipes that are too narrow, so relining has not been practical.
And of course, there’s the budget factor. While relining is cost-effective over the long term and as an alternative for full pipe replacement, some homeowners may need a fix with a lower upfront cost. In those cases, we suggest basic repairs or staged replacements. A licensed plumber can help weigh your options and figure out what makes the most sense for your pipes and your wallet.
How to Know If Pipe Relining Is Right for You
The best way to find out if pipe relining is the right fix? Start with a professional camera inspection. Here, your professional plumber inserts a mini drain camera into your pipes to get a clear look at the condition of your drainage and help determine whether trenchless pipe is viable, or if you’re better off considering another approach.
The camera can also detect blocked drains from tree root intrusion that may just need drain clearing with a Hydro Jet.
Pipe relining has many advantages, the main being:
- No digging or extensive excavation
- Long lifespan
- Minimal disruption
But it’s not a one-size-fits-all pipe relining solution. An experienced professional can walk you through your options based on your pipe layout, material, and damage.
Ready to take the next step? Get a tailored quote or book an inspection with The Relining Company so you’re not left guessing when it comes to your underground plumbing.
Frequently Asked Questions
What are the problems with pipe relining?
Pipe relining isn’t suitable for collapsed pipes, may reduce internal diameter slightly, and relies heavily on proper installation in order to avoid further plumbing issues.
Is sewer pipe relining worth it?
Yes, you can reline sewer pipes, and the relined pipe is often worth it for its durability, minimal disruption, and long-term cost savings.
What is the life expectancy of pipe relining?
Most pipe relining solutions last 20–50 years, depending on the materials and installation quality of the pipe walls.
How much does pipe relining cost in Australia?
Pipe relining in Australia typically costs between $400–$1,000 per metre, depending on pipe size, access, and condition. For smaller pipe repairs, drain repairs might be a more affordable solution.
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