I've done quite a bit of floor tiling in my time, always successfully but I've just had a complete disaster with Unibond Tile on Walls. I'd done the floor, using BAL, which doesn't require you to prep ply before tiling. There was a bit of boxing in of the pipes, to do, too and as I wanted to use wall tiles I bought this Unibond Tile on Walls Advanced All purpose adhesive. My first attempt resulted in the tiles falling off shortly after laying. Unibond told me that it was because I hadn't prepped the ply with solvent-based primer and so the ply had sucked the paste dry. That was true (I was still in BAL mode). So, at my next attempt, I prepped the ply and soaked the tile, too. Having left it for a day, I had a look at it and while it had stuck better than before, the cement had cracked at the bottom and the tile moved when pushed. I pulled the tile off. This time, it was clear that the problem wasn't the ply sucking the cement dry because the middle was still wet. I am at a loss. Perhaps I need flexible cement - I don't know. I'd really appreciate any help.
Btw, I should have mentioned that the tiles are quite thick for wall tiles (1 cm approx). They claim to be ceramic but the back is terracotta-coloured. They're cheap, from Hombase.
Btw, I should have mentioned that the tiles are quite thick for wall tiles (1 cm approx). They claim to be ceramic but the back is terracotta-coloured. They're cheap, from Hombase.
