How do I get tiles to adhere to a wall which was painted with kitchen latex paint? Paint has proved to be impossible to remove. Was thinking of applying Zinsser Gardz to seal over as some of the paint is lifting slightly. Would appreciate some advice.
If the wall surface is solid, free of contaminants, us a mastic and go right over the painted wall, after you scratch it up a bit with sandpaper to give the mastic a slightly rough surface to grip to.
This is presuming the wall is above a countertop not subject to getting saturated with water to affect the drywall backing.