Yes, painters and decorators can repair stained, damp or mouldy walls. Usually, this process will involve stripping away the damaged paint and treating the area with specialist paint. After this is done, the damaged sections can be repainted to match the room.
Dunbeath
Dunbeath is a village in south-east Caithness, Scotland on the A9 road. It was the birthplace of Neil M. Gunn (1891-1973), writer of The Silver Darlings, Highland River and so on, many of whose books are set in Dunbeath and its Strath. Dunbeath has an extremely abundant historical landscape, the site of many Iron Age brochs and also an early medieval monastic site (see Alex Morrison's archaeological study, "Dunbeath: A Cultural Landscape".) Of Dunbeath's landscape, Gunn wrote: "These little straths, like the Strath of Dunbeath, have this intimate beauty. In boyhood we learn more about every square backyard of it. We encompass it physically as well as our memories hold it. Birches, hazel trees for nutting, swimming pools with trout and a sometimes noticeable salmon, river-flats with the wind on the bracken and also disappearing rabbit scuts, a riches of wild flower and small bird life, the skyrocketing hawk, the unanticipated roe, the ancient graveyard, ideas of the folk who as soon as lived far inland in straths and hollows, the past and the here and now held in a minute of day-dream." ('My Little Bit Of Britain', 1941.). There is an area museum/landscape analysis centre at the old town institution.