Is this damp or a leak ?

[fizz47]

The spot was behind a cupboard( cupboard was not pushed right up against the wall and there was a gap) but recently smelt something…

The other side of the wall is a shower room and there is UFH.

[CoolHands]

Probably shower enclosure leak.

[Hub]

Yes, if it isn't an external wall then it most probably has something to do with the shower.

[RGG]

It's an internal wall therefore more likely to be a leak than "damp" from a cold spot.

As an investigation starting point it might be worth chopping out that section of affected plaster

If the brickwork is damp it suggests a leak permeating through from the shower room.

If the brickwork is less damp is suggests the damp might be the result of a cold spot in the cupboard room.

It does look like it's going to be a leak in the shower room.

That's how I would approach it.

+ As an afterthought, the wallpaper choice suggests a longstanding damp problem that has been covered over.

Edited by RGG on Sunday 16th November 09:34

[21TonyK]

Another vote for a leak around the shower tray.

[fizz47]

Thanks for the quick responses !!!!

Plumber called out to come and have a look