Could anyone advise please on how to cure prolific damp in a rented flat? My son has moved in to a place that has been converted from a shop's storeroom into a small bedsit/flat. There's no heating so he's using 2 electric heaters. It had slight signs of black mould when he went to view it but we thought that was because it had been empty for a while. It's drylined and we've recently found out that it was patched up after having been previously burnt out. Mould is appearing at an alarming rate, despite repeated bleaching: black mould on the walls, some kind of white fluffy mould on chairs and doors, green mould on the back wall of bookshelves. The landlord is not interested and there's 4.5 months left on the contract. Thanks for any advice!!