Thanks NickStone. Yes we are double glazed, but no trickle vent. As the bedroom is "on a busy main road we are reluctant to leave the top window open (noise, dirt etc.). Would a vent through the wall or a dehumidifier work ?
I have a cupboard in the main bedroom that has one side on an outside wall.
The inner outside wall within the cupboard is subject to bad condensation giving off a musty smell.
Can anyone give me advice on the best way to tackle the problem.
I appears to be creeping along the wall into the...