Post By Admin
April 14, 2025So you’re knee-deep in pipe research (or maybe just mildly curious), and clay sewer pipes have popped up on your radar.
You might wonder, what makes them a go-to in some homes and a pass in others?
This guide will break down everything you need to know about clay pipe sewer systems—when they’re great, when they’re not, and how to tell if they’re right for your setup.
We’ll also touch on how a pipe relining service could be your modern-day solution to aging or damaged clay pipes plumbing.
Pros of Clay Sewer Pipe
Despite their old reputation, clay pipes aren’t just relics from the past. They are still used to this day for a reason
Now, we will discuss the reason why clay plumbing pipes are still recommended to this day:
1. Environmentally Friendly
One benefit to clay sewer pipe that stands out is the fact that it’s sourced straight from the earth and requires minimal processing.
Therefore, it easily becomes one of the more environmentally friendly choices in your plumbing system.
And if sustainability is what concerns you, this is an excellent point to consider clay.
As opposed to the chemical treatments or manufacturing emissions engaged in by metal or plastic pipes, clay pipes have a lighter footprint on the environment.
2. Great Compatibility with Pipe Relining
Another modern-day perk? Clay works well with pipe relining!
This trenchless repair method allows plumbers to reinforce the inside of damaged clay pipes without the mess of digging everything up.
Instead of a full pipe replacement, relining can extend the life of your existing clay sewer system—saving you time and money.
It’s one of the major benefits of pipe relining that makes clay a more flexible choice than you might expect.
3. Excellent Chemical Resistance
Clay doesn’t react with most common household or industrial chemicals.
This makes clay plumbing pipes a smart choice in areas where the wastewater might carry chemical cleaners, oils, or even mild acids.
So, less corrosion means a longer-lasting pipe and fewer repairs down the line.
4. Durability and Longevity
If you’re in a location with stable soil and low risk of root invasion, clay can be a solid long-term option. Clay sewer pipes can last over 50 years!
Cons of Clay Sewer Pipe
So, clay sounds like a solid pick so far, right? While clay plumbing has its perks, there are definitely some drawbacks you’ll want to consider.
In this section, we’ll explore the most common issues people face with clay pipes:
1. Prone to Root Intrusions
Here’s the big one—roots in pipes.
Clay pipes are made from a porous, brittle material that tree and plant roots absolutely love.
Over time, those little root tendrils can sneak into pipe joints or tiny cracks, causing major blockages.
Clay pipes are typically installed in short segments with joints that aren’t completely sealed. That’s basically an open invitation for thirsty tree roots looking for moisture.
2. Fragile and Breakable
Unlike PVC or copper, clay doesn’t exactly bend under pressure. It’s known for being brittle as it ages.
Shifting soil, heavy construction above the ground, or even freeze-thaw cycles can cause cracks or full-on collapses.
Newer options like PVC and HDPE are more durable, flexible, and cost-effective in the long run. Clay might still be functioning in some homes, but it often fails inspections or shows its age during renovations.
3. High Maintenance Over Time
Between root intrusions, cracks, and buildup from minerals, regular maintenance becomes non-negotiable.
Because clay is porous, it can collect debris more easily inside the pipe. It also doesn’t handle sudden pressure changes very well, which adds to the wear and tear.
When Should You Use Clay Sewer Pipe?
Clay pipes can still be a smart choice in specific cases. For example, in heritage or historically significant properties.
Because, maintaining original materials is often required to preserve authenticity or comply with restoration standards.
In some industrial or commercial settings where wastewater is highly acidic, clay offers natural resistance to chemical corrosion and gives it an edge over some modern alternatives.
That said, clay isn’t always the best fit for every property.
If your area is prone to ground movement, heavy vehicle traffic, or dense tree roots, you might find yourself constantly battling a blocked sewer pipe or blocked stormwater drain.
These situations can stress clay’s rigid structure, leading to cracks, misalignments, or even total collapse over time.
In such scenarios, it’s often better to look into newer materials like PVC or HDPE, which are more flexible and easier to install.
Or, if you’re already working with an older clay system but don’t want to dig everything up, you can consider pipe relining.
And of course, if you’re already experiencing slow drainage, pooling water, or foul odours, don’t wait—it’s likely time to fix a leaking pipe before it leads to bigger, messier problems.
FAQ About Clay Sewer Pipe
Still weighing your options? Totally fair—clay sewer pipes have been around for centuries, but choosing the right piping for your home is a big decision.
Let’s clear up some common questions you might be thinking about before making the call!
1. How long do clay sewer pipes last?
Properly installed and well-maintained clay sewer pipes can last anywhere from 50 to 100 years.
But environmental issues, roots from trees, and soil movement will all detract from that greatly—so it ultimately depends on your specific setup.
2. Should clay sewer pipes be replaced?
If your clay pipes are cracked, fractured, or constantly being clogged by roots and debris, replacement may be your best bet.
Yet you don’t need to replace them completely. In some instances, you may opt for a pipe relining solution that will repair their integrity without digging up your yard.
3. Can a cracked clay sewer pipe be patched?
Yes, isolated damage or small cracks in a clay pipe sewer can be repaired with methods like epoxy lining.
But when damage is extensive or widespread, patching may be just temporary in nature. Professional inspection can come in handy in determining if repair or replacement is the ideal option.
Conclusion
So, what’s the verdict on clay sewer pipes?
They’re durable, eco-friendly, and time-tested—but they also come with challenges like root intrusion and fragility over time.
And if you’re unsure whether your current system is up to scratch, or you’re dealing with issues like blockages, leaks, or cracks, our friendly team at Neighbourhood Plumbing is just a call away!
About the Author
From unclogging the toughest drains to repairing leaking toilets, Ricky is a seasoned plumber who has brought his craftmanship to homes across Melbourne. He is passionate about sharing plumbing tips just as much as he is about fixing your plumbing issues. So, when your taps or pipes begin leaking, you know who to call.
