Leak from upstairs airing cupboard to kitchen ceiling - help !!

[Pinoy]

Any clues guys ? ...this has been a slow leak over a few months that I thought was damaged sealent in the upstairs ensuite shower tray...replaced it..but..
Shower not been used for a week and has got massively worse.
I think (not sure) it is worse when the central heating is on (or even hot water on)...heating has been on a lot recently.
The area marked in red is wet..
Thanks
Phil

 

[blup]

If the shower is fed by the tank, there could be a link. The wet area circled in red, is that the pipe dripping or the area behind? You might have to lift the floor (or break through the plasterboard on the ceiling below) as water can appear some distance from the source especially if it follows the pipework

 

[Pinoy]

Thanks, to clarify the red area, the pipe is wet, wall floor dry.
I just wrapped lots of kitchen roll where the red mark is and after twenty minutes is drenched.
Since the pipe is part of the pressure release for the tank does that give a clue ?

 

[CountryFan]

It’s a tundish for when a prv/srv operates and needs to be dealt with by a G3 registered engineer.

 

[Pinoy]

@Stuckinarut Hey, thanks. Understood and great advice. BG coming at 08h00 tomorrow ! Thanks very much.

 

[Pinoy]

@Stuckinarut Had BG round...three issues:
1. The expansion vessel had hardly any pressure
2. The prv shown in the attached photo is releasing water
3. The tundish is not seated properly and was leaking at the base and therefore onto kitchen ceiling

So BG man got the expansion vessel to pressure, and managed to tighten up the tundish (access is near impossible).
The prv is going to be replaced, I have to wait for two weeks !
I have also asked them to relocate the tundish for easy access.

So at the moment I can hear the dripping of water through the tundish (as well as prv hissing) and as long as the tundish remains seated correctly all is fine - BG man seemed happy with this.
Is this safe in terms of having a prv that is clearly knackered in-situ for two weeks ? It does not feel right to me.
And obviously, the tundish could leak again.
Getting stressed.

 

[Harry Bloomfield]

Is this safe in terms of having a prv that is clearly knackered in-situ for two weeks ? It does not feel right to me.
And obviously, the tundish could leak again.
Getting stressed.

If the PRV, is dripping into the tundish OK, and the tundish draining OK - it will be fine for the time being.

 

[Pinoy]

@Harry Bloomfield Thanks, appreciated…had to take some stress relief…

 

[CountryFan]

Yes it’s fine, as per @Harry Bloomfield.

 

[Harry Bloomfield]

@Harry Bloomfield Thanks, appreciated…had to take some stress relief…

Any excuse

 

[Pinoy]

So I am still waiting for the PRV to be replaced.

The BG man managed to tighten up the tundish to stop the leak....BUT it's started again..

As a bodge (it's so hard to get at, see pictures) could I put some bathroom sealant around the bottom of it ?

It also occurred to me that could I do a temporary push fit connection (elbow then horizontal) to both pipes so I can have a temporary tundish much more accessible...

The joys of a crap installation...

 

[Pinoy]

Could I use this as a temporary fix ? ..note, leak is at bottom tundish connection...

https://www.screwfix.com/p/fernox-ls-x-leak-sealer-50ml/23614

 

[Harry Bloomfield]

Could I use this as a temporary fix ? ..note, leak is at bottom tundish connection...

https://www.screwfix.com/p/fernox-ls-x-leak-sealer-50ml/23614

Unlikely to work. I think we are all in exactly the same boat - none of us know precisely where your tundish is leaking from. Neither the pipe leading to the top of the tundish, not the drainpipe below it, should be under any pressure at all.

Is the tundish perhaps simply filling up, and overflowing?

The idea of the tundish, is simply as a tell-tale, so you know the pressure release valve is opening.

 

[Pinoy]

@Harry Bloomfield And indeed it does not work...

It also occurred to me that could I do a temporary push fit connection (elbow then horizontal) to both pipes so I can have a temporary tundish much more accessible...would that work ?

Not sure what I can do while waiting for the PRV to be fixed, have to keep turning water off...