I'm about to put ceramic tiles onto the splashback behind the kitchen worktops, up to the underside of the cupboards. Currently there is
18mm standard (ie not external grade) ply boarding securely fixed to battens on the wall, and I'm planning on tiling straight onto the ply.All the "tiling onto ply" advice I've found on google is about floors. Flexing under load isn't going to be my problem, just want to make sure the tiles stick, although tile adhesives for wood all seem to be the flexible sort anyway. There's conflicting views on to PVA or not to PVA the ply first. To my mind, why PVA seal the surface first when you want the adhesive to "soak in" a bit before it sets (or crystallizes) to get good adhesion, but there may be something I'm missing.
Any views?
David.