After I flush the toilet and the water went down the drain, a few moments later I hear a loud banging noise from the basement. I did some reading and it is suggested that I may have a water hammer. However the water hammer is normally associated with a closing valve which is not the case here. The toilet valve closes after the tank is full. I am thinking that it may be related to the drainage pipe rather that the water supply pipe.
Thank you for any help.
Thank you for any help.