Learned a lot from this Forum so far, but I still need to ask to ask a question that may start another round of Oh yes it is/Oh no it isn't.
I am getting ready to tile a Bathroom that has new plasterboard walls as well as old painted ones. Should I or should I not seal the plasterboard before tiling and, if so, what with?
I intend to rub down the painted walls to remove the old paint. Do I need any other preparation and, again, should I seal them before tiling and, if so, What with?