Looking for some advice.
We live on the side of a steep hill, with neighbours above and below us (left/right). All houses appear to have a standard installation of 40mm pipes sticking through the roof, acting as vents to the soil pipes. These vents appear to continually leak a "sewage" smell that can get quite strong. Since we are on the hill, our vent pipe on the roof is 5m away from our neighbour's (above us) main balcony! She recently reported that often the smell will drive her in from the balcony.:mad:
I understand that these pipes are there to break any vacuum that might occur when flushing toilets etc. So to my simple mind it should be possible to install a flapper valve that is sealed until pulled open if any vacuum starts to form (opposite to the flapper valve you see on big diesel truck exhausts)
So the question is:
- Is the installation of a flapper value a reasonable approach, if so are these valves available?
- Is there another, standard, way of dealing with the smells from these vent pipes.
... all in the name of maintain good neighbour relations.