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Shower room built by professional contractors about 2 years ago. Was ok till earlier this year when spots of black mould started appearing. Got real bad so i took out all the old caulking round the shower tray, let it dry out for a few days and replaced it with new caulking which was supposed to be mould and mildew repellant. 3 months later its worse than it was before. Can anyone suggest what i should do?
Kenny.
Kenny.