I'm about to tile a kitchen wall including the window reveal. I'm fine with the windowsill and sides, but the plan is to tile under the top of the reveal. I've never done this before. Is the adhesive going to hold the tiles up? Or will I have to figure out a way of propping them in place for a while?
Havant tried it myself, but you could do the wall tiles & let them dry, then when you do the window tiles put some 2" wide masking tape from the wall tile around & under to the window frame. At least it will save the fall if they do come off.