Hello guys. My walls have just been plastered and was wondering how long it would take for it to dry and go light grey colour. When I wake up in the morning there is condensation on inside of windows which is not good. Also there is no heating. Is it best to use dehumidifier and or electric heater to speed up process? Or if windows are opened during night would there be less condensation. I do not want condensation building up because we know it leads to mould.