Quick answer: Most leaking basin mixers are caused by worn isolation valves, tired flexible hoses or a rushed install, not the tap itself. Quarter-turn ceramic isolation valves and quality hoses last much longer.
A basin mixer looks like a simple job: two hoses, a couple of nuts, done. But most leaking mixers I get called to aren’t faulty taps. They’re cheap parts or rushed installs underneath.
Isolation valves
Under most basins there are small isolation taps that let you shut off the water to just that mixer. Older rubber-washer types stiffen and crack over time, so when you finally need them, they won’t turn or they won’t seal. Quarter-turn ceramic isolation valves last much longer and actually work when you need them.
Flexible hoses
Braided flexible hoses are rated for a certain life. A burst flexi hose under a basin can flood a bathroom quickly. Use good quality ones, don’t kink or overtighten them, and replace any that look rusty or bulging.
The mixer itself
- Buy a model with WaterMark certification and replacement cartridges available
- Solid brass bodies outlast plated plastic
- Make sure it suits the basin: hole size, reach and height
Installation
A good install seals the mixer to the basin properly, tightens hoses without kinking them, and leaves everything accessible for the next time it needs work.
Renovating or replacing a mixer in Ryde, Gladesville, Epping or North West Sydney? Call me on 0451 001 503.
Quick questions
They have a rated life and should be replaced if rusty, bulging or kinked. A burst hose can flood a bathroom quickly.
WaterMark certification, a solid brass body and replacement cartridges you can buy.
