Smell from Bath

[paul_v]

Hello,

I tiled our newbuild bathroom last year, fitted a shower and changed the taps etc from chrome to brushed brass. Since then we have been getting sewer smells from our bath and a slight gurgling noise when flushing the toilet.

When I did the bathroom I kept the same bath, trap and pipework with the only change being the waste which screws into the bath which I swapped for this one from bathroom mountain

Standard Bath Click Clack Waste With Overflow - Brushed Brass

Maintain your bath's water levels effortlessly with this Standard Bath Pop-Up Waste with Overflow, Brushed Brass waste with overflow.

www.bathroommountain.co.uk

I’m not sure if the smell was there before the work or if it’s just got worse over time so could be an issue since the house was built in 2022.

The bath panel is tiled in now so access is a pain however I have this photo I took when I did the bathroom which kind of shows what’s underneath the bath

My thoughts are the trap isn’t deep enough or that there should be a U bend in there between the pipe going into the floor and it coming out of the trap.

The top of the soil pipe comes out in the loft and has some kind of vent on it. I have removed this and flushed the toilet and we still get the gargling noise from the bath, however the sewer smell obviously then comes into the loft.

Before I rip the bath panel off and start changing things, any help of what the issue is would be really helpful and save me a headache from the wife who is now very fed up with the smell.

Cheers
Paul

 

[Koolpc]

You need to try cleaning your bath once in a while!!!!!

 

[HERTS P&D]

Check your manhole for any blockage.

Andy

 

[Hugh Jaleak]

'Vent' is an Air Admittance Valve, does what it says on the tin. Removing it will allow any positive pressure in the system to escape, so it's helping relive the issue slightly, although not completely by sounds of things.

My suspicions are same as Andy's, you have a blockage or restriction in the drainage system somewhere. So, when you flush the toilet, the discharge is going into what is essentially sealed pipework, so needs to displace the equivalent volume of air. It does this via the path of least resistance, which in your case, is the bath trap, unless you remove the AAV in which case it can escape straight into the loftspace.

 

[paul_v]

Thanks for your help, I’ll take a look in the manholes and go from there.