Slate roof tiles are holed with two nail holes, located approximately 1/3 of the way down from the top of the slate and 1 ¼” – 1 ½’ in from each side. They are attached with copper nails (10 gauge) and typically smooth shank in the event they need to be repaired it’s easier to cut with a slate ripper. The required length of the nail will be twice the slate’s thickness plus an inch. You can READ MORE ABOUT NAILS USED ON A SLATE ROOF HERE.
