One of the most common questions homeowners ask during renovation or re-piping projects is: which pipe type should I use? The wrong choice leads to leaks, contamination, or complete replacement within years.
Galvanised Iron (GI) Pipes — The Legacy Problem
Galvanised iron was the Malaysian standard until the 1990s. If your home was built before 2000 and hasn't been re-piped, GI pipes may still be behind your walls. They corrode from the inside over time, restricting flow and causing brown water. Plan for replacement — not patching.
UPVC Pipes
UPVC is now the most common material for cold water supply in Malaysian homes. It's affordable (RM2–8 per metre), doesn't corrode, and is lightweight and easy to install. UPVC cannot handle hot water — it softens above 60°C, so it's strictly for cold water supply lines. Use CPVC or PPR for hot water.
CPVC Pipes
CPVC handles water temperatures up to 93°C, making it suitable for hot water supply lines. It's slightly more expensive than UPVC but uses the same solvent cement joining method, making it easy to work with. Good mid-range option for water heater outflows and hot water distribution.
PPR Pipes
PPR is the premium choice for both hot and cold supply in Malaysia. Joined using heat fusion, which creates leak-proof connections with no solvent contamination. Handles up to 95°C and lasts 50+ years. Costs more (RM8–20+ per metre plus fusion tool hire) but is what quality KL contractors now specify for full re-piping projects.
Which Should You Choose?
Cold water supply: UPVC. Hot water lines: CPVC or PPR. Full re-piping project: PPR throughout — best longevity and zero risk of joint leaks. Underground supply lines: HDPE — UV-resistant and rated for burial.
Frequently Asked Questions
How much does it cost to re-pipe a house in KL?
Full re-piping of a 3-bedroom terrace house (replacing GI with UPVC or PPR) typically costs RM3,000–8,000 depending on the number of points and access difficulty. Contact us for a site assessment.
Do I need to break walls to replace pipes?
In most cases, yes — concealed pipes require hacking to access. A good contractor minimises hacking and patches walls properly afterwards. Some surface-mounted runs can avoid wall breaking entirely.