We inherited split face tiles on a feature wall in our ensuite. In my naivety over the last few years these have been cleaned with a steamer and bathroom cleaner. They aren't fairing so well now - constantly damp, chip easily when cleaned and a brown residue can comes off when cleaned (this may be grout). Looking for advice on whether we can save money and seal them now (I don't think they ever were) or whether we should just take the hit and replace them. Thanks!