I’ll admit it. I ignored a leaking toilet. For too long.
Usually I stay on top of house maintenance. Stave off the big stuff. But this drip? It slid to the bottom of the to-do list. It wasn’t a flood. No strange smells. Just a persistent plip-plop from a rusted bolt and a tired washer. Research suggested I could handle this myself. Cheap fix. Fast fix. So I got to work.
What you need
- Flat-head screwdriver
- Universal toilet repair kit (£8.99 on Amazon works)
- Sponge (yes, really)
- Washing-up bowl or deep container
- Old towel or rag
- Socket wrench (only if nuts are stubborn)
Drain the cistern first
The bolt connects the tank to the bowl. Pulling it requires a dry workspace. Otherwise, you drown in bathroom water.
Start by killing the supply. Look at the flexible pipe behind the toilet. There is an isolation valve there. It has a slot running parallel to the pipe. Take your screwdriver. Turn the valve 90 degrees clockwise. The slot should now run horizontally across the pipe. Supply cut.
Flush the toilet. It drains most of the tank. Take the lid off. Now deal with the residual water. Use the sponge. Dip it. Wring it out into your bowl. Repeat until dry.
Wait, wet the sponge first. It holds more that way.
Yank the old hardware out
This took longer than expected. Not because it’s hard. Because a nut was hiding in the shadows.
Unscrew the nuts underneath. Remove the washers. Pull the bolt free. The cistern hangs by two bolts usually. I found both. My existing rubber gasket was fine. No need to replace that. The new kit included M6 corrosion-resistant bolts, pre-threaded with nuts and washers. Smart design.
Clean up debris with an old rag. Don’t let grit compromise the new seal.
Sometimes you just have to be patient. The nut is hiding.
Install the new kit
No instructions came with the box. Didn’t matter. I watched how the old one sat. Reverse that logic.
Slot the new bolt in. Hand-tighten. Then add a bit of torque. Firm pressure ensures a watertight seal. Too hard, and you crack porcelain. Too soft, and it leaks again. Find the middle ground.
Test it before turning everything on
Paranoia helps.
Before reopening the water supply, pour two cups of water directly into the cistern over the new joint. Watch closely.
Did it drip? No.
Good. Turn the isolation valve back 90 degrees anticlockwise. Water rushes back. Wait for the tank to fill. Flush once. Then again. Check underneath.
Dry as a bone. Success.
Should you DIY plumbing?
Only if it’s simple. Replacing a washer or a bolt is within reach for almost anyone. Fixing a burst main? Probably not.
Research matters. Know the problem. If it feels above your skillset, call a pro. Trying to hack through complex plumbing just costs you more money later. But for a £9 kit and an hour of time? Who’s the real idiot, the plumber charging for the visit or me ignoring the drip for months?
