Friends, I have a tub surround (35 yr old house) that is tile up to about shoulder height, drywall and paint on up. Some time after construction a previous owner added a handheld shower head, with bracket to hang it on the wall, but no other wall preparation. As a result he drywall and paint at the top of the tile are mildewing and separating. Can I extend new tile to the level of the showerhead? Will the drywall hold it, or must other wall preparation be made? Any other solutions to suggest? thanks, Mike