I figure this could be a good thread for the roof walkers amongst us, especially if you're carrying a big of pud like me and having no place on a flimsy slate. So my question is daveyboy,do I need a slate ripper to replace a tile on a slate roof? ...or will a pry bar do the job. I broke a tile on a beautiful new build the other day and it was so obvious that I had to own up. But I don't fancy buying a tool just to use it once.