Shower waste trap problem

[rufmeister]

We have recently been hit with a disgusting smell from our shower in the ensuite.

Upon checking, it appears there is no water in the waste trap, as when I shine a light down the plug, there's nothing there.

Any ideas?

Don't want to rip the shower tray out if it's something that doesn't need to be done.

[rufmeister]

Had numerous showers in it, shall try a bucket full.

Sorry, no ideas from me as I'm not a plumber or got any experience.

There's no signs of leaks in the room below.

Guess it could be a small leak?

[rufmeister]

Chucked a couple of buckets down 5 minutes ago, all gone.

Flushed the adjacent loo, and could hear gargling, but I guess it's a shared waste. Going on the smell at least

[rufmeister]

Spudler said:

Look at this first.
Some traps you can't see the water.

That was my first thought as previously was blocked with hair and gunk. Nothing there this time.

Looks like I will need to remove the panelling and see if I can shine any more light on it.

[rufmeister]

barryrs said:

This.

You may have a concealed air admittance valve (durgo) already that's failed over time.

Will take a look tomorrow.

Are these valves commonly fitted in new properties? House is 7 years old and I've owned it from new.

Thanks for the advice.

[rufmeister]

Went up into the attic, and as soon as the hatch was opened I could smell the same smell.

Any ideas what I am looking at here? Didn't get up and in, as couldn't see too much other than what's in the image.

As I say, no experience in plumbing of this nature, so if anyone could point me in the right direction I'd appreciate it.

[rufmeister]

Cheers, will get up and have a closer look.

[rufmeister]

Started a couple of weeks ago I thought it smelt bad, but didn't think too much of it, cleaned the hair and gunk away from the immediate plug area, and left it at that. The last few days it's got REAL bad.

Been up in the attic just now, and the grey/black flexi is some sort of vent for the roof space, and there is a definite flow of air coming from the White one, with a similar smell, but not overpowering. Can I assume this is the vent?

I guess the next step is taking side panels off and checking if its the U bend, or other.

Cheers for all the help this far.

[rufmeister]

Removed the trap, and no blockages,

A definite flow of air coming through waste pipe.

[rufmeister]

Oh wow.

Wife just came home as I am searching the net looking for solutions, with the trap out in the sink, me convinced I'm going mad as I can't see how this trap would work, and she proclaims "Do you need this bit? I took it out and cleaned it the other day."

So after head scratching, hassle, time, removing side panels, getting in loft, it's the simplest of things.

Cheers for the advice. Really appreciated.

[rufmeister]

King Herald said:

I'd wager something is missing inside if water runs straight out of that thing. A mentioned earlier by someone, maybe somebody removed the guts of it?

http://www.heatandplumb.com/acatalog/Just_Trays_Sh...

[rufmeister]

dirkgently said:

knuckle bends on the waste, another quality install.

Just look at all the rubbish under there, that tells you how much they cared when knocking this house up.

There was a mastic tube, bits of off cut pipe, and other crap under there.