Damp appearing in bedroom

Jesusaves

Hi all,

We recently purchased a house that was totally gutted from the inside 2 yrs ago, so all is new. Just a few days ago I noticed a bit of damp appear on the top of the wall near the ceiling in 2 locations but both are on the top of the wall (which is an external wall).
I want to deal with this ASAP. I have noticed there is condensation on the windows in the morning, if that has something to do with it. Any advice on how to stop this from spreading and also to get rid of it is very much appreciated. 😀

_Brian

What source of ventilation is there in the room??

Condensation on windows this time of year suggests there is stale air overnight.

Are there vents and are they working ok ??

.......

This post has been deleted.

dok_golf

was the external wall pumped with insulation beads by any chance?

Jesusaves

There are no vents in the room and we have the window mostly closed when sleeping, so yeah not much circulation of air I suppose.

Jesusaves

No en suite but we don't have vents in the room so that maybe an issue

Jesusaves

There are no vents in the room and we have the window mostly closed when sleeping, so yeah not much circulation of air I suppose.

Jesusaves

The external walls are insulated but don't know of beads? I've no idea but I can find out from previous owner.

Jesusaves

Sorry but my replies are not posting properly, tk you all for replying.

the_pen_turner

Definitely a ventilation problem. Fit a vent in the wall asap. In the mean time open the window

Full Marx

I'm having a similar problem in my house... Got quite bad since I got insulation put in. I have no vents... Any ideas how to solve this without getting a vent? The wall of my house consists of two solid blocks with a small gap between that I got filled with insulation last year and I can't afford any building work atm, I imagine that would be expensive enough

jimmycrackcorm

Full Marx wrote:

Any ideas how to solve this without getting a vent?

As above, a dehumidifier...

the_pen_turner

If you buy-in a dehumidifier you will spend 400 to 500 Euro minimum. Those cheap ones will break within a year.

Better off hiring an industrial one for a while and spend the difference on drilling the wall.
Drilling a vent isn't that expensive

.......

This post has been deleted.

dok_golf

Most likely cause is lack of circulation. Another cause ( which happens quite a bit) is that the external walls have been pumped with insulation but the beads didn't quite make it all the way up. Heat, like water finding the lowest point to flow out, will find the weakest point in a surface to dissipate through a wall. If the damp spots are in the corners, then circulation is defo your problem. If its anywhere else, chances are the insulation isn't high enough within the walls ( sorry about long winded explanation).