Yesterday I heard a humming noise which became quite loud. I discovered that the soil pipe was vibrating. This vibration could be felt by touching the stack. Also the toilet seats were doing the same.
After a toilet flush it went away, diminishing slowly to a low hum and then no noise at all. This occured a few times throughout the day. Flushing the loo cured it but occasionally flusing the loo started it.
I'm very confused.. Both toilets run into a common outlet under the bathroom floor then to to the external drain in the yard.
I tried Google but got zilch..
What could be causing this please...
TIA
After a toilet flush it went away, diminishing slowly to a low hum and then no noise at all. This occured a few times throughout the day. Flushing the loo cured it but occasionally flusing the loo started it.
I'm very confused.. Both toilets run into a common outlet under the bathroom floor then to to the external drain in the yard.
I tried Google but got zilch..
What could be causing this please...
TIA