Rusty Galvanised Lines
Rusty Galvanised Lines | Pipe Upgrades | Plumbing | Cowan
It’s easy to forget about the maze of old galvanised lines hidden behind your walls—until rusty water, poor pressure or unexpected leaks remind you. HEP’s specialised team in Cowan brings decades of experience and the latest non-invasive technology to replace tired steel pipes with clean, long-lasting copper or PEX systems. Our swift pipe upgrades remove corrosion, restore water quality, and boost flow, all while respecting your home’s finishes and schedule.
From the first inspection to the final pressure test, we listen to your concerns, explain every option, and keep disruption to a minimum. Whether you’re renovating, selling, or simply tired of orange-tinged water, HEP’s craftsmanship and transparent pricing make the choice simple. Enjoy crystal-clear water, consistent pressure, and peace of mind—book your Cowan pipe upgrades with HEP today.
FAQs
What are rusty galvanised lines and why are they a problem in Cowan homes?
Galvanised steel pipes were widely installed in Cowan homes up until the late 1960s. Over time the zinc coating inside the pipe breaks down, exposing bare steel that quickly rusts. This rust constricts internal diameter, lowers water pressure, discolours the water with orange-brown sediment and can eventually cause leaks or bursts. Because Cowan’s semi-rural water supply is slightly mineral-rich, the corrosion process is often accelerated, making rusty galvanised lines a common plumbing issue in the area.
How can I tell if my property still has galvanised pipes that need upgrading?
Look for tell-tale signs such as drop in flow when multiple fixtures run, fluctuating hot-water temperature, brown staining in sinks or toilets, and metallic-tasting water after periods of non-use. In the meter box or under the house you may see dull grey pipes threaded at the joints rather than copper crimp or PEX push fittings. A licensed plumber can perform a pressure test and inspect with a borescope to confirm the presence and condition of galvanised sections.
What pipe materials do you recommend for replacing rusty galvanised lines?
For most Cowan homes we recommend switching to either copper Type B or PEX-A/PEX-B plastic pipe. Copper offers unmatched longevity (50-plus years), withstands UV and rodent damage, and adds resale value. PEX is cost-effective, flexible for fewer joints, and resists internal scaling. Often we employ a hybrid system—copper risers outside the wall for durability and PEX inside walls and ceilings to speed installation—giving you the best of both worlds.
Will upgrading my pipes improve water pressure and quality?
Yes. New copper or PEX lines have a smooth interior wall that restores the original 20–25 mm bore, removing the rust blockage that causes low pressure. You’ll notice stronger shower flow, faucets that fill sinks faster, and appliances like dishwashers performing better. Because rust and scale are eliminated, your water will be clearer, taste cleaner and reduce staining of laundry and fixtures.
How long does a typical whole-house re-pipe take and will I have to move out?
A standard single-storey Cowan home with one bathroom can usually be re-piped in 1–2 days; a larger double-storey or two-bathroom dwelling may take 3–4 days. We plan the work in zones so you have at least one operational bathroom overnight. There is no need to vacate; we provide temporary bypass lines and restore water at the end of each workday. After final testing, we patch any wall openings and leave the site tidy.
Do I need council approval and what warranty do you provide on the new pipework?
Under NSW Plumbing Code, replacing internal water lines is classed as ‘regulated work’ and must be undertaken by a licensed plumber who lodges a Notice of Work (NoW) and a Certificate of Compliance with Ku-ring-gai Council. We handle all paperwork on your behalf. Our installations come with a 25-year manufacturer’s warranty on PEX and a 50-year warranty on copper, plus our own 10-year workmanship guarantee, giving you long-term peace of mind.