Skip to main content

Ready to hire?

Post your job in minutes, browse real reviews and choose who to speak to.Post a job

Need some tips or advice?

Ask a question
Plumbing

Bungalow with No soil vent pipe

Anonymous user 09/03/2024 - 3.09 PM

Hi all, We have recently moved to a bungalow which has a WC that discharged directly to manhole with no SVP on the system. There are no other connections to the run only the WC. The bathroom seems to smell worse than normal (might just be the very old decor) but my question is, should the WC discharge to a vented stack first? Or could an AAV be used to avoid a ugly Stack at the back of house? Many thanks

Are you a tradesperson and able to answer this question?

Log in

4 Answers

ROBERTO'S

Rating: 5 out of 5
Birmingham
In theory you should have a vent pipe. An AAV could be used also and it should be located into your loft (under roof) or 200mm above your highest wet point (probably the basin) any chance to go and check if you have one? It should not be boxed in or if it is, it must have good ventilation.
Answered22 April 2020
11

D & R Property and Plumbing Maintenance

Rating: 4.9 out of 5
New Romney
on older properties it is not unusual for wc to discharge straight to manhole,if it is not causing a problem it is ok,fitting an aav will not vent it as it only allows air in ,and will not overcome back pressure in drains,further investigation may prove the drain is vented in another position.
Answered22 April 2020
3

Paul Taylor Plumbing & Heating Services

Rating: 5 out of 5
Portsmouth
When the property was built the drains would be linked underground to up 5 properties 1 in 5 will have a vent pipe to atmosphere.
Answered8 May 2020
3

David firth

Rating: 5 out of 5
Sittingbourne
An AAV needs to be 100mm above the pan level. As any blockage would result in it spilling over the lowest point of escape. Your toilet bowl. It can be built into a housing. But you may hear a slight vacuum after flushing. But as for a smell. The trap in the bowl is designed to stop smells coming up from the main drains. Very common in bungalows is a rat can chew through a flexible connector. And the smell escapes. Also the connection may not be good enough and not sealed
Answered8 May 2020
2