Toilet flowing without pressing flushing it

[Jeremy2014]

Hi expert DIY

So every so often, when washing machine on, shower on or for no reason, the toilet start to overflow / leaked for no reason which over Xmas end up is quite a fair consumption when I was away.

See picture of current set up.

Anything that is going wrong there? or could be going wrong that I can fix myself?

Many thanks

 

[terryplumb]

If water reaches the overflow tube change the float valve for a new one.

 

[Jeremy2014]

Cheers thanks for the feedback

by changing the float valve, do you mean the unit to something new like:

Fluidmaster Plastic Float Fill valve | DIY at B&Q

Fluidmaster Plastic Float Fill valve - B&Q for all your home and garden supplies and advice on all the latest DIY trends

www.diy.com

Viva Skylo Bottom Entry Fill Valve Brass Shank | Toolstation

• Suitable for high and low pressure • Height adjustable: 203 to 305mm • Water saving delayed fill • Thread size: 1/2" • 10 year warranty

www.toolstation.com

Or do you just have to change any washer that is within the valve if any?

Many thanks

 

[terryplumb]

Change the complete valve ,either of the above and preferably one with a brass tail.
Plastic tails are prone to cross threading too easily.
You could try servicing Your existing valve ,but I would just fit a new one.

 

[Jeremy2014]

Perfect Many thanks !