Eggy smell from soil pipe

[dt1972]

Hi,

Hope someone can help. I have recently had a lower level extension which has resulted in the soil pipe being boxed in within the new extension and the outside drain being moved slightly. We randomly get a bad eggy/sewage smell in the new extension, any idea what this could be?

the builder has confirmed that he joined the pipes from the sink and bath to the soil pipe, he also removed the hopper.

any other ideas what it could be.the builder is coming this afternoon so would like to ask him some specific questions as to what it could be.

many thank

 

[Howsie]

Dodgy AAV perhaps?

 

[dt1972]

Dodgy AAV perhaps?

ok thanks very much, I will suggest this?

 

[Howsie]

You should?

 

[dt1972]

apologises, didnt mean to end my previous quote with a ?

 

[Reg Man]

Or leaking soil stack/vent pipe. Open ended boss? Or traps on waste system being siphoned out.

 

[IND_Nick]

Obviously I would ensure all the waste connections are correct as a first point of call. But a bit of a random one here, I used to labour for a flooring company a number of years ago and the latex levlling compound we used would smell eggy and like sewage for a number of days until the floor coverings went down. We used to get the odd call back over it. I assume it is something in the chemical make up of the stuff. Might be worth a check? Might not though!

 

[Reg Man]

Sulphur pobably in the leveling mix? Is the smell there all the time? If its intermittent then most likely siphonage from the sink trap. Does the sink gurggle when you let the water go?

 

[Guest123]

Get a plumber in to do an air test on your drainage.

 

[Mike Jackson]

We used to get reports of smells on a HA estate that we used to maintain. The smell was from the plywood used to box the flues in where they passed through the downstairs toilet.

That's 62 properties that will require inspection hatches now.