banging and huming when taps turned on upstairs

[Mavrick]

Can anyone one help???
when i turn on the cold water taps upstairs or flush the toilet or the washing machine starts downstairs there is a very loud humming and banging from the pipes and the tap in the kitchen starts running.This has been happening for quite a while now and even the neighbours are starting to moan.

PLEASE HELP

 

[kevplumb]

if you are on a tank fed supply chech the ballvalve in the tank

 

[namsag]

Your cold water maybe tank fed, and the ball valve in the tank is worn , which then vibrates very quickly on the surface of the water which transmits through the pipework. New ball valve req...... posting at same time kev