I have a Bungalow build 1950s cavity walls not sure if they have insulation in the cavity.
Suffering from really high humidity in main bedroom 74% overnight dropping to 59/60 in day. Window and external wall is dripping in the morning with moisture. Also for the first time in 5 years had mold in the 2 bottom corners. Not too sure how to combat this.
Tried sleeping with window open even though its freezing in UK at this time but still have the issue.
There is an old fire place that has been boarded over thinking of adding a vent into that to help with airflow?
Also maybe adding thermal wallpaper wallrock to that wall to keep it warm?
Dont suffer with this anywhere else in the house? Any ideas appreciated!