V
vosnack
It is called making good to tile too..ffs.. what all tilers do when a substrate isn't flat enough to tile too... but not with a bonding coat...
But skim of plaster will not give more than 10mm. I don't think that even this thickness is a good idea as plaster is not really designed for straightening big dips. So really if it's up to 10mm is it not achievable with tile adhesive? And skimming simply a waist of time? And if more than 10mm multi/board-finish not suitable for this task? I do plastering more often than tiling but i never plastered specificaly prior to tiling except when wall is only partially tiled. Skimming is a finishing coat so is tiling.