Why has it started doing this in the last few weeks? The trap gurgles as you shower and then the next time you enter the bathroom it stinks of sewers. It never did it before.
The soil pipe looks to be clear at the top vent, which has a good cover on it. The shower trap is a low profile "waterfall" type. The sink is actually in an adjoining bathroom but must be no more than three feet away from the shower trap, which I think joins the bathroom drain just downstream of the sink waste and the drain runs at a shallowish angle under the length of the bath and out of the wall to join the soil pipe below first floor level.
Any suggestions?
The soil pipe looks to be clear at the top vent, which has a good cover on it. The shower trap is a low profile "waterfall" type. The sink is actually in an adjoining bathroom but must be no more than three feet away from the shower trap, which I think joins the bathroom drain just downstream of the sink waste and the drain runs at a shallowish angle under the length of the bath and out of the wall to join the soil pipe below first floor level.
Any suggestions?