I shall be refitting 2 shower enclosures for a customer and in both the customer has chosen (but not yet purchased) 600x300 porcelain wall tiles.
My problem is that the existing internal walls are 4inch block with some form of undercoat plaster (probably bonding) then plaster skim.
Having removed the tiling in 1 enclosure some of ther skim coat has stayed put some has come away.
I am aware of the weight limits. ie. skim 20kg per sqm, board 32kg per sqm, marmox 60odd kg per sqm.
How do I go about prepping these solid walls to take these tiles.???
Can reline the existing walls with backer board with a bed of adhesive then plug and screw it, or is the only way to do it by hacking bonding off back to blockwork then dot n dabbing board.???