Plumbing Basics · 10 min read · Intermediate
How to Change a Basin or Kitchen Tap: Planning & Safe DIY Steps
A planning-first guide to replacing a straightforward tap when the supplies can be isolated safely and the new fitting is compatible with the existing plumbing.
Key points & steps
- Confirm the replacement tap suits the basin/sink hole arrangement, supply type, available pressure and connection size before dismantling the old one.
- Check that the new tap and any supplied hoses/fittings are suitable for UK potable-water use and follow the manufacturer’s installation instructions.
- Isolate the hot and cold supplies locally where reliable isolation valves are fitted; otherwise isolate at the internal stop tap as appropriate. Open the old tap to confirm the supply is off.
- Place towels and a shallow container underneath, then disconnect the supply connections while supporting the pipework so fixed pipes are not twisted.
- Remove the old tap fixing hardware from beneath the sink/basin and lift the tap out. Clean the mounting surface and inspect the hole and surrounding ceramic/stainless steel for damage.
- Fit the new tap, seals and mounting hardware in the order specified by the manufacturer. Align the spout/handles before tightening the mounting system evenly.
- Connect the hot and cold supplies without kinking flexible tails or putting sideways strain on valves and pipework. Do not reuse damaged seals or hoses.
- Reopen the water slowly, purge air through the tap and inspect every disturbed connection. Recheck after several minutes and again after normal use.
Practical tips
- Tap replacement becomes a different job if pipework must be altered, backflow protection is uncertain, the supplies cannot be isolated reliably or the existing plumbing is corroded.
- Do not assume every flexible hose or fitting is suitable for drinking-water service merely because the thread fits.
- If the tap includes unusual pull-out hoses, filtered-water connections or specialist valves, follow the specific product instructions or use a plumber.
What you may need
- Compatible replacement tap
- Manufacturer instructions
- Correct potable-water connectors/seals
- Tap/basin wrench or suitable spanner
- Bucket and towels