Leaking push-fit pipe fitting

Free DIY guide — no sign-up required. Written by a qualified Gas Safe engineer.
DIY Friendly💷 £0£1015–30 min
Safety First
⚠️ Turn off and drain the pipe before working on it.

Not sure if this matches your problem?

Use our interactive tool — answer a few questions and get a personalised diagnosis.

Diagnose my problem →

Most likely cause & what to check

1

Turn off the water and drain the relevant pipe section.

2

Push-fit fittings are quick but rely on a clean, square pipe end. If leaking, pull the pipe out (use the collet release ring to unlock it), inspect the pipe end.

3

The most common cause is a scratched or out-of-round pipe end. Cut back 30mm of pipe with pipe cutters and deburr the edge.

4

Check the O-ring inside the fitting is present and undamaged. If it's damaged, the fitting should be replaced.

5

Push the pipe firmly into the fitting until it clicks — you should feel it engage the grab ring.

6

Restore water supply slowly and check for leaks.

🛠 Tools & materials you may need

Pipe cutters or hacksawDeburring tool or file
Prefer to have it done for you?

Get a vetted local engineer to handle it — no hassle, Gas Safe registered.

Find a local engineer →

Was this guide helpful?