Hi,
I'm refitting a bathroom as part of a renovation and have been given contradictory advice by plumbers. The 3 floor property has its original bathroom and toilet in a back room on the first floor with the vent stack immediately outside and rising above the eaves.
A second bathroom was added at some time in a second floor front room. This bathroom has the basin and bath waste pipes feeding into the toilet soil pipe and the soil pipe has a long run of about 8 metres with a fall of about a metre along a side wall and the back wall to join the original stack at the back of the house. Within this bathroom there's also a vent from the soil pipe going up through the ceiling . . . and opening within the attic.
Completely wrong, illegal and potentially smelly.
However, one plumber has said that this vent is necessary to prevent vacuums and syphonage as it's at the highest point in the system and all that's needed is an AAV in the attic to put it right.
But another plumber has said the original stack gives all the venting that's needed and removing the second one will tidy up the bathroom.
Who's right?
dhc.
I'm refitting a bathroom as part of a renovation and have been given contradictory advice by plumbers. The 3 floor property has its original bathroom and toilet in a back room on the first floor with the vent stack immediately outside and rising above the eaves.
A second bathroom was added at some time in a second floor front room. This bathroom has the basin and bath waste pipes feeding into the toilet soil pipe and the soil pipe has a long run of about 8 metres with a fall of about a metre along a side wall and the back wall to join the original stack at the back of the house. Within this bathroom there's also a vent from the soil pipe going up through the ceiling . . . and opening within the attic.
Completely wrong, illegal and potentially smelly.
However, one plumber has said that this vent is necessary to prevent vacuums and syphonage as it's at the highest point in the system and all that's needed is an AAV in the attic to put it right.
But another plumber has said the original stack gives all the venting that's needed and removing the second one will tidy up the bathroom.
Who's right?
dhc.