Hi, we have had this problem for a couple of years now. We would clean one of the rooms in our house and leave it for a couple of days and then if you were to rub your hand along the floor or the top of any of the units in the room they would be covered in a fine coating of white powdery dust. We have had two family members look at it, one being a plasterer and the other being a joiner and we have also had two painters look at it. They are completely baffled and don't have a clue what it is, but suggested that we completely cover the room in a sealer i.e. PVA. So we have done that and it has still returned. That was after we had painted the room twice previously only for it to return. The powder is very fine but if it gets wet at all it is sticky and almost like glue. Any help would be greatly appreciated. Thank you
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