I need advice on the correct wall preparation for bathroom tiling where there are freshly skimmed walls and bare plasterboard walls.
My tiles are 600 x 300 and have had a couple literally fall off with no adhesive left on the wall, but all on the tile. It appears the adhesive has not bonded with the wall, but the tile is fine.
I have seen videos, advising using diluted PVA to seal both the plasterboard and skimmed walls before tiling, what is the best way to ensure the tile sticks to the wall