Hi, I have been reading through similar questions on forums for this subject but I have a specific question.
Living in a rented 1960/70 detached bungalow and there is black mould on two bedroom ceilings, notably above the beds. The main bedroom has two outside walls and its worse in that top inside corner where they meet and also on the top of the wall yet despite cleaning it off with bleach and re-emulsioning the mould returns. I realise humidity levels are obviously high and breath adds its own vapour. The loft is well insulated and there is central heating. The windows are wooden framed with double-glazed units installed but they aren't really adequate as the windows stream with condensation each morning in the winter.
So, if I fix sliding vents into the bedroom ceilings (clearing a little insulation away above the vents) will that allow excess moisture to escape into the loft and improve things or will it allow cold air from the loft to condense around the vents and make things worse?