Tiling over new plaster.
I want to retile the bathroom, but have had to remove all the plaster on one of the internal brick walls as it was unsound. I intend to get a professional in to replaster this wall, and then tile over it. How long do I need to wait after the wall is plastered before I undertake this tiling? Also, I would like some advice on whether to PVA the walls before tiling, as I have seen a reply on the forum that suggests “Tile adhesive suppliers recommend that you shouldn’t use PVA to coat walls as it acts as a barrier between the wall and the adhesive. They advise applying a bonding agent to the wall prior to tiling.” If this is the correct procedure, what bonding agent do they mean?
Wait until the plaster is dry (no dark patches remaining), cross score the surface to provide a key. If you like applying the adhesive to the wall its probably worth coating the wall with waterproof pva, if you prefer buttering the tiles stick the straight on the wall.
Why skim the wall?
Just tile to to the brickwork - excellent substrate and will hold more weight.
Skim can only hold 20kg/m2 and you'll have to wait for it to dry and it'll cost you for the spreader. If flatness is an issue then do as above and dot n dab PB.
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