So my fiancee and I recently moved into our first house. We are just beginning to taylor it to our needs. In the family room there is a fireplace on one wall. It is currently surrounded by "Face" bricks, which are about 1/2 inch thick bricks. I took one off of the bottom flat part of the hearth, and it appears it is wood underneath. I took a face brick off the wall part, and it appears that the bricks are just cemented/glued to the drywall. We are thinking about replacing the face bricks with slate tiles. Slate seems like it is a pretty "slick" material, will a morter/cement/glue be able to hold it on drywall? Any other tips for doing a project like this?