Damp in ground floor bedroom
We have a 2 bed ground floor apartment and about 5 months ago a bit of mould occured on the outside wall, about 12 inches above floor level, it then started spreading along the length of the wall and around the corner onto a non exterior wall. Cleaned it all off with bleach but it left some bubbly paint work, which had now expanded, although no more mould. When it rains the external wall gets very wet and with heavy rain water building up on the patio. I’m thinking that over time water has got into the wall and is now coming into the brickwork. We have only lived here since February and evidence of damp didn’t start appearing until July. I really need an expert to establish the cause, find a solution and give me a quote. I have bought a dehumidifier that has been collecting about 2 litres of water a day which seems a huge amount for a small bedroom. Maybe I should get some heat in there in the meantime?
Any advice would be helpful until I can get a permanent resolve.
Thank you
Roz