I have a couple of damp issues in my top (4th) floor flat. - a few mouldy patches inside cupboards in bedroom on outside wall, one side of room is from the floor upwards but also on other side of room in top cupboard by ceiling. - a couple of dark mould patches, and wallpaper crusting away from wall (up to 0.5m from floor), on internal wall of same room, other side of wall to bath, about 1m from the outside wall. I have just renewed the seal around the bath - it was a bit damp under the bath and has previously flooded. - a football size patch of discoloured wall, looks like the start of mould, about 1.5m from floor, backs onto middle of shower tiles
I would like to get an expert opinion to confirm the causes of these, and some advice on whether to just leave to dry or treat somehow. Is one just the leaky bath and the other condensation, or anything due to leaks from outside - it's hard to investigate from outside being so high up.
What is the recommended course of action? - pay for a visit from a surveyor, building inspector, damp specialist company...?
Thanks a lot, Andrew