i have a problem i don't know what it is, damp of some kind along the outer wall of my bedroom appearing is like black spots the landlord said it is condensation cos the flat has been empty for 3 months i have treated it with mould killer but every couple of weeks it comes back and i wipe it of treat and paint again, i have notice a little condensation on the windows and ventilate when possible it is very cold in the room does anybody have any suggestion, i would be very grateful for your assistance
thanks
madman
thanks
madman