Since we moved in, we've had issues with mouldly patches and awful condensation on the windows in cold weather. Main areas are external living room wall, top of the landing and our bedroom. Finally getting the roof done in January along with the gutters, flashing including on the flatroof bay window.
My question is about how to deal with the damage already done internally. As a total amateur, i'm hypothesising that I can leave things to dry out over spring and summer, treat with mould sprays and redecorate then just wait and see if anything the problem keeps happening? Does this sound right or am I missing a step?