A few weeks ago we got 2 external walls fitted with a damp proof membrane, new plaster boards and had them plastered. We had rising damp. I've. Now got black, yellow and green powdery mould growing on plaster board. White mould on wall beside it and lots of mould spores on the ceiling next to the plaster board. This is in my children's room. Why is this still happening and I'm fed up and don't want to go back to using mould spray on a weekly basis. Room gets well ventilated.
