Mysterious moisture around windowframe corner

[krav]

Hi there,

About a year ago I noticed some moisture build up around the bottom right hand corner of one of our first floor window frames.

When I inspected it at first I noticed that the on the exterior of the window the seal around the base of the window, seemed to need redoing so I carefully filled it up and hoped that would do it.

Some 6 months after having resealed the wooden window frame from the outside, I have noticed that the plaster is still damp for about a 6 inch radius around one of the base corners of the window frame and I am unsure now what might be causing it or a good way to find out.

I have attached three photos to better illustrate the damp patch

I would be interested to hear thoughts on what might be causing this or what might be a solution.

Many Thanks

David

 

[freddiemercurystwin]

More than likely just condensation. Do you have trickle vents in the head of the windows or are they not utilised in Belgium?

Probably just need to ventilate the room a bit more.

 

[crank39]

I concur, theres probably some cold bridging going on there and warm air loves to condensate on cold surfaces, ventilate well and try this first

 

[foxhole]

No cold bridging, just condensation on window running down to sill and then off at the corner soaking wall.No great mystery.

 

[krav]

Hi there,

There's no ventilation that I can see, so presumably I just need to open the windows a bit more.

Thanks for the comments.

Just out of interest, are there any simple ways of creating improved ventilation? (apart from opening the windows! ) in general I mean . . . .

David

 

[freddiemercurystwin]

Either a trickle vent can often be retrofitted in the head of the window or an hit & miss vent through the wall.

 

[krav]

Thanks for all the helpful advice, it's much appreciated

David