Hi Guys!
Got a issue with some mould/mildew in 2 of our bedrooms. There are lots of brownish, small, powdery spots on nearly all the walls (internal and external). Also there is even some in the built in wardrobe.
We have only been in the house for 7 months so are still learning about it. The construction of the house is late 70's timber frame with outer block skin. We currently only use one of the bedrooms, the windows in both rooms are left open all day and night unless its very windy. We did notice in the early months of the year there was a lot of condensation on the main bedroom window first thing in the morning, enough that the net curtiain would stick to it if it made contact.
Any suggestions what could be causing it and how we could prevent/cure it?