Plumbing Upgrades For Old Pipes That Need To Be Replaced
- Lewis New
- 9 hours ago
- 4 min read
Old plumbing pipes need to be replaced when they show signs of systemic failure, such as recurring leaks, persistent low water pressure, and discoloured water. This upgrade is the definitive solution to issues caused by age-related corrosion in outdated materials, ensuring your home's safety and plumbing efficiency.
This includes guidance on:
Key Signs Your Cairns Home's Pipes Are Failing
Common Materials in Older Plumbing Systems
Modern Pipe Replacement Options for Your Home
Understanding when to upgrade from a simple repair to a full replacement is key to protecting your property's value and preventing a catastrophic failure. Our A Homeowner's Guide to Troubleshooting Plumbing Issues can help you spot initial warning signs.
From our experience repiping homes across Cairns, we know that a full plumbing upgrade is a significant investment in your property’s safety and functionality. Our licensed plumbers can assess your system and provide a clear, effective solution. If you're concerned about your pipes, Contact Oakland Plumbing for a professional assessment.
Frequently Asked Questions (FAQs)
As specialists in plumbing upgrades, we often get asked these questions by Cairns homeowners considering a repipe for their property.
Q1. How long do plumbing pipes typically last?
The lifespan of plumbing pipes depends heavily on the material. Older galvanised steel pipes may only last 40-50 years before corroding, which is a common cause of issues we see. For a deeper look into a major symptom of this, see our guide on Low Water Pressure Cairns: Causes & Solutions.
Q2. What are the signs that my pipes need replacing, not just repairing?
A full replacement is needed when you experience multiple, systemic issues rather than an isolated problem. This indicates the entire pipe system is failing, not just one component. Our Leak Detection Cairns service can confirm if leaks are widespread.
Key signs include:
Frequent leaks appearing in different parts of the house.
Persistent low water pressure affecting all taps.
Water that is consistently rusty or discoloured.
Q3. How much does it cost to repipe an older home?
The cost to repipe a home varies based on factors like the property's size, the number of bathrooms, accessibility of the pipes, and the chosen replacement material. We provide detailed, upfront quotes after a thorough inspection, which can be booked as part of our Cairns Plumbing Maintenance service.
Key Signs Your Cairns Home's Pipes Are Failing
The key signs your home's pipes are failing include persistent low water pressure, water that appears rusty or discoloured, and frequent leaks in multiple locations. These are not isolated incidents but symptoms of a widespread, age-related breakdown of your plumbing system, indicating that the pipe material itself is deteriorating and needs a full upgrade.

From our experience in older Cairns properties, we often see these issues develop gradually over time. You might first notice the water taking longer to run clear or that your shower pressure isn't what it used to be. For a full list of things to watch for, see our A Homeowner's Guide to Troubleshooting Plumbing Issues. These signs are often the direct result of decades of internal corrosion and mineral build-up inside old pipes.
Persistent Low Pressure
If all your taps have weak flow, it's a strong sign your pipes are internally clogged with scale or corrosion.
Frequent Leaks
Multiple leaks in different areas indicate that the entire pipe system is deteriorating, not just one faulty joint.
Discoloured Water
Water that is brown or red-tinged is a direct sign of rust from corroding steel pipes impacting your water quality.
Common Materials in Older Plumbing Systems
Older Cairns homes commonly have galvanised steel pipes for water supply and clay or cast iron pipes for drainage. Each of these materials is now well past its expected lifespan. Galvanised steel corrodes from the inside out, causing blockages, while clay and cast iron become brittle and susceptible to cracks and tree root intrusion.

Identifying these materials helps us diagnose recurring issues accurately. For instance, the constant drain clogs you're experiencing might not be from kitchen waste, but from invasive tree roots breaking through brittle, old clay sewer lines, a common cause of Cairns Blocked Drains ().
Galvanised Steel Pipes
Prone to internal corrosion, leading to low water pressure, discoloured water, and eventual leaks.
Cast Iron Drains
Durable but can suffer from rust and corrosion over many decades, leading to cracks and severe blockages.
Clay Sewer Pipes
Highly susceptible to cracking under ground pressure and are a primary target for tree root intrusion.
Modern Pipe Replacement Options for Your Home
The best modern replacement for old pipes is PEX (cross-linked polyethylene), valued for its flexibility, durability, and resistance to corrosion. Copper is another excellent, long-lasting option, though it is more rigid and expensive. For drainage, durable PVC pipes are the industry standard, offering a smooth, reliable flow that prevents blockages and resists root intrusion.

When we perform a full repipe, we choose the best material for the job to ensure longevity and performance. The flexibility of PEX piping allows for a faster and less invasive installation process, as it requires fewer fittings than rigid copper. This is especially beneficial when integrating with your existing fixtures and Cairns Hot Water system. Modern PVC drains also solve the historical problem of tree roots, ensuring a clear line for decades.
PEX Piping
The most common choice for water lines due to its flexibility, corrosion resistance, and cost-effectiveness.
Copper Piping
A premium, highly durable material that offers a very long service life but comes at a higher installation cost.
PVC Drains
The modern standard for all drain and sewer lines, providing a smooth interior that prevents build-up and is impenetrable to tree roots.
Conclusion
Widespread low pressure, frequent leaks, and discoloured water are clear indicators that your home's old plumbing has reached the end of its life. Upgrading to modern materials like PEX and PVC is the only way to permanently solve these issues and protect your property from a catastrophic pipe failure.
This upgrade is a valuable investment in your home’s health; learn more in our post about the Complimentary Plumbing Maintenance (Worth $85) With Service.
If you suspect your pipes are due for a replacement, don't wait for a costly failure. Contact Oakland Plumbing today for an expert assessment.