Did not see your earlier post but looks like cement yes render coat, plaster gypsum skim coat which for some reason has been painted with gloss paint then at a later date skimmed again.
So yes plenty of layers to attract moisture but is the damp really that bad? I can not see from this photo
Did not see your earlier post but looks like cement yes render coat, plaster gypsum skim coat which for some reason has been painted with gloss paint then at a later date skimmed again.
So yes plenty of layers to attract moisture but is the damp really that bad? I can not see from this photo