Mystery water damage/damp in bedroom

[John D v2.0]

my money is on shower, there are about 2 million ways for water leaks to happen at a shower.
could be behind the tiles/panel at the vertical corner or beside the tray, could be the waste or trap or waste pipe, could be a cracked shower tray, could be a waste joint, could be condensation from warm air meeting cold up in the wall or in the fan ducting especially if it's popped off or leaking, could be the supply pipes either before or after the mixer/control.

but you're going to have to dig into the plasterboard etc to find out more I think.

 

[Helpplz]

Thank you, utility floor is fine no leaks, patches of water stain there. Hubby laid new lino before Christmas and saw nothing in that room.
All the comments are helpful and we appreciate the support as the builder completely ignores any request for help and that's regarding issues he's never fixed in another part of the house! Sometimes you just don't know which way to turn so many thanks everyone. Hubby and I will have to keep trying to get to the route cause of the damp. Taking away the plasterboard has allowed the area to dry out but we'll keep an eye on it and attempt some of the suggestions, hopefully it will help to pin point the initial cause of the damp.

 

[kingandy2nd]

This is what’s leaking.

Might be a small damage to seal or fitting which leaks at high heat or pressure but you can see the build up of crystallisation around it.

Or it may have not been correctly fitted, but but your intervention you’ve actually pushed it home to correctly fit it (and stop the leak)

 

[Helpplz]

Hi it's actually damaged plasterboard and expanding foam you see from job being done at the start of the build.
Plumber and us couldn't feel any water, see any drips from the radiator pipes , wish it was that simple as we then would have the answer. Thanks though for taking time to read the post.

 

[Helpplz]

Is your heating system loosing pressure ?
check when shower is in use

We did check that early on and no issue with that at all.

 

[Helpplz]

my money is on shower, there are about 2 million ways for water leaks to happen at a shower.
could be behind the tiles/panel at the vertical corner or beside the tray, could be the waste or trap or waste pipe, could be a cracked shower tray, could be a waste joint, could be condensation from warm air meeting cold up in the wall or in the fan ducting especially if it's popped off or leaking, could be the supply pipes either before or after the mixer/control.

but you're going to have to dig into the plasterboard etc to find out more I think.

Thank you John. There are so many moving parts you're right. It's where to start with it all! My friend wondered if concrete slab/dpm may be at fault

 

[Loofah]

Time to lift some floor coverings

 

[jeds]

Standard method is to produce a profile of the dampness. Moisture content of timber can be measured accurately - so best to start there. Take readings at, say, 300mm intervals along the length of the sole plate and mark the readings on a plan. Then work from the base up the studs, doing the same. Readings on plasterboard are less accurate but will still give you a comparative measure - so do the same working up the boarded part of the wall. Similarly masonry measurement is less accurate but comparative measurements can be useful. So, do the same across the floor.

What you are trying to achieve is a map of the dampness. This can often identify the source? You will have spotted that to do this you will need a reliable method of measuring dampness. i.e. a moisture meter.

 

[kp00110]

How recent is the issue? You say you think it might have been a paint issue - guessing that means you have recently redecorated - have you done any drilling into the walls or floors lately for any decorations and may have drilled or pierced any pipework? How about the picture frame above the area?

 

[Helpplz]

How recent is the issue? You say you think it might have been a paint issue - guessing that means you have recently redecorated - have you done any drilling into the walls or floors lately for any decorations and may have drilled or pierced any pipework? How about the picture frame above the area?

Hi, the mark first appeared and it was so subtle 1 inch above skirting we thought we had a painting issue....fault in the mix etc...but thanks for reading this. Small pin in the wall for a very lightweight canvas.

 

[Helpplz]

Standard method is to produce a profile of the dampness. Moisture content of timber can be measured accurately - so best to start there. Take readings at, say, 300mm intervals along the length of the sole plate and mark the readings on a plan. Then work from the base up the studs, doing the same. Readings on plasterboard are less accurate but will still give you a comparative measure - so do the same working up the boarded part of the wall. Similarly masonry measurement is less accurate but comparative measurements can be useful. So, do the same across the floor.

What you are trying to achieve is a map of the dampness. This can often identify the source? You will have spotted that to do this you will need a reliable method of measuring dampness. i.e. a moisture meter.

Thank you. We'll need to invest in one. Sounds like a good way to measure any progress albeit the timber has now dried out with opening the wall up