Pipe Installation, Repairs & Replacement in Darwin
Professional Water, Drainage, Stormwater & Gas Pipe Services
Pipes are the backbone of every plumbing system, safely delivering clean water, removing wastewater, carrying stormwater away from your property and supplying natural gas where required. When pipes become damaged, worn out or incorrectly installed, they can lead to leaks, blockages, water damage, poor drainage and costly repairs.
At Apex Plumbing & Drainage Services, we provide professional pipe installation, repairs and replacement services throughout Darwin and surrounding areas. Whether you need a new water main, underground drainage, stormwater upgrades, gas pipe installation or replacement of ageing pipework, our licensed plumbers have the experience and equipment to complete the job safely and to Australian Standards.
From a single leaking pipe to complete plumbing systems for new homes and commercial buildings, we deliver reliable solutions built to last.
Our Pipe Services
We provide a large range of services for plumbing pipe systems, including:
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Water pipe installation
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Water pipe repairs
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Water pipe replacement
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Burst pipe repairs
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Underground water mains
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Copper pipe installation
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PEX pipe installation
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Poly pipe installation
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PVC pipe installation
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Sewer pipe installation
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Sewer pipe replacement
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Stormwater installation
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Stormwater repairs
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Downpipe installation
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Gas pipe installation
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Gas pipe replacement
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Drain pipe repairs
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Vent pipe installation
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Air conditioning condensate drains
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Under-house pipework
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In-wall pipework
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Ceiling pipework
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Commercial pipework
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New build plumbing
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Renovation plumbing
Whether the pipe is underground, inside a wall or exposed externally, we can install, repair or replace it using materials suited to the application.
Water Pipes
Water pipes deliver clean drinking water throughout your property. Over time, pipework can deteriorate due to age, corrosion, movement, poor installation or accidental damage.
We install and replace water pipes for:
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New homes
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Renovations
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Extensions
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Commercial buildings
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Unit developments
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Water main upgrades
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Outdoor plumbing
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Irrigation supplies
Depending on the application, we commonly install:
Copper Pipe
Copper remains one of the most reliable plumbing materials for above-ground water services.
Benefits include:
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Excellent durability
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Long service life
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Corrosion resistance
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Suitable for hot and cold water
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UV resistant for external installations
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Proven long-term performance
Copper is commonly used for exposed pipework, plant rooms, commercial plumbing and internal water services.
PEX Pipe
PEX (cross-linked polyethylene) is a flexible pipe widely used in modern plumbing systems.
Advantages include:
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Flexible installation
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Fewer joints
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Reduced installation time
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Corrosion resistant
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Suitable for hot and cold water
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Excellent reliability
PEX is commonly installed inside walls, ceilings and floor cavities for residential and commercial plumbing.
Poly Pipe
High-density polyethylene (HDPE) or blue line poly pipe is commonly used for underground water services.
It is ideal for:
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Water mains
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Rural properties
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Irrigation
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Underground water supplies
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Long pipe runs
Its flexibility and durability make it an excellent choice for buried pipework.
Stormwater Drainage
Stormwater systems are designed to collect and safely divert rainwater away from your property.
Without effective stormwater drainage, heavy rainfall can lead to flooding, erosion and water damage around buildings.
We install and replace:
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Underground stormwater pipes
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Downpipes
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Surface drainage
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Yard drainage
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Spoon drains
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Stormwater pits
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Connection to legal points of discharge
Our team can also replace damaged or blocked stormwater systems to improve drainage performance and protect your property.
Downpipes & Roof Drainage
Your roof drainage system plays an important role in directing rainwater safely away from your home.
We install and replace:
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PVC downpipes
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Metal downpipes
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Round downpipes
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Square downpipes
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Color-matched downpipes
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Roof drainage connections
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Stormwater outlets
Downpipes are available in a wide range of colours and finishes to complement your roof, gutters and external walls, helping maintain the appearance of your property while ensuring efficient rainwater management.
Gas Pipe Installation
Gas pipework must be installed correctly to ensure safe and reliable operation.
Our licensed gas fitters install and replace gas pipework for:
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Gas hot water systems
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Cooktops
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Ovens
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BBQ outlets
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Outdoor kitchens
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Commercial appliances
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Industrial equipment
Depending on the application, gas installations may utilise copper or approved polyethylene (PE) pipe for underground services, with all work carried out in accordance with Australian Standards.
Smaller Plumbing Pipework
Not every plumbing job involves large underground pipes. Smaller pipework throughout your home is just as important to the overall performance of your plumbing system.
We install and repair:
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Kitchen sink waste pipes
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Bathroom basin wastes
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Laundry waste pipes
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Bottle traps
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P-traps
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S-traps
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Appliance connections
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Flexible water connections
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Overflow pipes
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Relief valve drains
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Air conditioning condensate drains
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Tundish pipework
These components are essential for the reliable operation of your plumbing fixtures and appliances.
Vent Pipes
Every drainage system requires correct venting to allow wastewater to flow efficiently.
Vent pipes help:
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Prevent vacuum in drainage systems
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Improve drain performance
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Reduce sewer odours
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Protect trap seals
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Maintain correct airflow
We install and replace vent pipe systems for new homes, renovations and drainage upgrades.
Under-House, Wall & Ceiling Pipework
Many plumbing systems remain hidden from view.
We regularly install and replace pipework located:
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Inside wall cavities
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Above ceilings
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Beneath suspended floors
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Under raised homes
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Within roof spaces
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In service ducts
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Inside commercial buildings
Whether you're renovating, repairing leaks or upgrading ageing plumbing, we can access and replace concealed pipework while minimising disruption wherever possible.
Replacing Old & Damaged Pipes
Pipework doesn't last forever. Some plumbing systems become unreliable with age or were installed using materials that are now known to have a limited service life.
We commonly replace ageing or damaged pipework, including:
Polybutylene Pipes
Polybutylene (often called "poly B") plumbing was widely installed in many homes but is now recognised as being prone to premature failure.
As these pipes age, they can become brittle, split or develop recurring leaks, often without warning.
If your property still contains polybutylene pipework, replacing it before major failures occur can save significant repair costs and reduce the risk of water damage.
Damaged Sewer Pipes
Drainage systems can deteriorate over time due to:
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Tree root intrusion
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Ground movement
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Pipe collapse
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Cracked joints
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Corrosion
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Poor previous repairs
Depending on the condition of the existing system, we may recommend repairing isolated sections or replacing the affected pipework entirely to provide a long-term solution.
Ageing Clay Pipes
Older clay sewer pipes were once commonly used throughout Australia. While durable for their time, they can crack, collapse or allow tree roots to enter through joints as they age.
Replacing ageing clay drainage with modern PVC pipe improves reliability, flow efficiency and reduces the likelihood of future blockages.
New Pipe Installation for Renovations & New Builds
Building or renovating?
We install complete plumbing pipe systems for:
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New homes
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Bathroom renovations
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Kitchen renovations
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Laundry renovations
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Unit developments
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Commercial fit-outs
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Extensions
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Outdoor entertaining areas
Our team works closely with builders, renovators and homeowners to ensure every plumbing system is installed correctly from the beginning.
Why Choose Apex Plumbing & Drainage Services?
With more than 15 years of industry experience, Apex Plumbing & Drainage Services delivers reliable pipe installation and replacement services backed by quality workmanship and honest advice.
When you choose us, you can expect:
✔ Licensed and insured plumbers and gas fitters
✔ High-quality materials suited to each application
✔ Installations completed to Australian Standards
✔ Honest recommendations without unnecessary replacements
✔ Residential and commercial expertise
✔ Long-lasting plumbing solutions
✔ Respectful, tidy workmanship
✔ Reliable service across Darwin and surrounding areas
Whether we're replacing a single section of pipe or installing a complete plumbing system, we focus on delivering work that is built to last.
Frequently Asked Questions
How do I know if my pipes need replacing?
Frequent leaks, low water pressure, discoloured water, recurring drain blockages or ageing materials such as polybutylene or clay pipes can all indicate that replacement should be considered.
What pipe material is best?
The best material depends on the application. Copper is commonly used for exposed water services, PEX is popular for internal water reticulation, HDPE (poly) is widely used for underground water mains, PVC is the standard choice for drainage, and approved gas piping materials vary depending on whether the installation is above or below ground.
Can you replace pipes inside walls and ceilings?
Yes. We regularly replace concealed plumbing within walls, ceilings, roof spaces and under floors as part of leak repairs, renovations and plumbing upgrades.
Do you install stormwater systems?
Absolutely. We install underground stormwater drainage, downpipes, pits and connections to suitable discharge points to help manage rainwater effectively.
Can you replace old clay or polybutylene pipes?
Yes. We frequently replace ageing clay sewer lines and deteriorating polybutylene water pipes with modern plumbing materials that provide greater reliability and longevity.
Need Pipe Repairs or New Pipe Installation in Darwin?
Whether you're replacing ageing water pipes, installing new drainage, upgrading stormwater, running gas lines or plumbing a new build, Apex Plumbing & Drainage Services has the experience to deliver a professional solution.
We proudly provide pipe installation, repairs and replacement services across Darwin and surrounding areas, using quality materials and workmanship designed to stand the test of time.
Contact Apex Plumbing & Drainage Services today to discuss your plumbing project or arrange an inspection.