I have a damp patch on the wallpaper below a bay window in my front room. The space beneath seems to be hollow. Is this likely to be due to poorly sealed windows, to genuine rising damp or to something else? Thank you.
I have a damp patch on the wallpaper below a bay window in my front room. The space beneath seems to be hollow. Is this likely to be due to poorly sealed windows, to genuine rising damp or to something else? Thank you.