Hi, could any plastering experts advise me? I am getting my kitchen refurbished and I’ve had all the tiles and wooden panelling removed and the walls skimmed. Where the tiles have been removed the walls look fine, but where the wooden panelling has been removed and skimmed there are dark patches, even though it’s been a week and the plaster seems dry. The guy has told me it is bonding showing through the plaster and it will be fine to paint over. Is he telling me the truth? I’ve had plastering done before and it’s never looked like this! I should stress that it is only patchy where the panelling has been removed, and nowhere else. Thanks in advance! I’ve uploaded some pics so maybe this will help with my description.