Stop Water from Syphoning from Shower Trap

kryan1

Have been recently having an issue of a sewer smell coming from the shower drain. The shower is connected to into the toilet waste pipe and i think when the toilet is flushed i assume this is syphoning the water from the shower drawing tap.
My issue is all of there pipes are buried under tiles with no access to them. the only pipe i have access to is the pipe from the toilet before it goes under ground?

Anyone have and suggestions on how i can fix this problem. the only thing i can do for now is removed the cover and put a sink plug in and remove this when using the shower.

many thanks

howdoyouknow

Put a bath plug in the shower when not in use

kryan1

howdoyouknow wrote: »

Put a bath plug in the shower when not in use

Have that done, but looking if there is a fix

sullzz

You could try fitting an air admittance valve on the waste from the toilet . Depending on the room you have you might have to have it visable .

Audioslaven

i had this and I placed a T fitting with the top left open before it enters the sewer pipe and it kept the smell from going back up the shower.

howdoyouknow

kryan1 wrote:

Have that done, but looking if there is a fix

Is it upstairs toilet or ground floor?

kryan1

howdoyouknow wrote: »

Is it upstairs toilet or ground floor?

All are ground floor