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What to do if your toilet won’t flush

Let’s face it – there’s only so long any of us can deal with a broken loo. But before you pick up the phone to the plumber and incur all that extra cost, here are a few simple things to try first. If your DIY repair works, your nostrils – and bank balance – will thank you!

1. If your toilet is blocked

If you think something’s clogging up the pipework, read our helpful article 'How to unblock a toilet without a plunger’.

2. If the water level is too low in the cistern?

Does the water level look lower than usual? Then you'll need to check the valve is turned on. If it is, then you may need to replace it.

  • First you’ll need to turn off the toilet’s water supply
  • You'll need a bucket and sponge to collect and remove the water from the cistern first
  • Loosen the lock nut that holds the ball valve in place underneath or on the side of the cistern
  • Swap the old valve for the new one and adjust the float to the correct height. You'll need a fibre washer to fit between your new valve and the water supply pipe
  • Turn the water valve back on

If these don’t work, or for any other problems, get in touch with Dyno and one of our bathroom blockage experts can help.

More plumbing Help and Advice
How to fix a dripping tap

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When you hear "Dyno", drains might spring to mind. You'd be right to think that – we've been solving the country's drainage issues for over 50 years. But did you know we're gas and heating experts too?

This year we're proud to be supporting Gas Safety Week, happening from the 19th–25th September. By taking part, we're aiming to raise awareness of the importance of looking after your gas appliances - such as your boiler or oven - at home.