Damp in bedroom bay

[hunter26]

Hello,

Looking for a little bit of advice as to perhaps best course of action for trying to overcome some persistent damp in a bedroom bay window area.

Attached photos to show internal view / condition of damp currently Oct 2024. External view of the pebble dash rendering. Also a view of the roof.

Guess before going and potentially buying new windows, albeit they likely need replacing anyway. I wondered whether the issue could potentially be either the rendering or the bay roof.

During winter months we suffer terribly with condensation on these windows. Using a karcher window vac we almost have to empty it half job due to the sheer amount of water it takes in.

Therefore any help or guidance much appreciated.

Regards


Daniel

 

[foxhole]

Do you have mechanical ventilation to bathroom and kitchen and use it?
Do you dry washing indoors?
What ventilation is there in that room?
Have any of the glazed units failed?

 

[crank39]

Could be an ingress point on the roof in which case a good temp measure would be to lather it with something like cromopol, or it could be the pebbledash gone porous and the rain is wicking through, from the inside its clear its a single skin wall with no cavity as most bays are so the outer pebbledash is touching the brickwork, thats my best guess