1. The tiles I am using must be fitted at a fixed gauge (low pitch forticrete centurion). So I'll probably end up with a part tile at the top. Should I just cut the top off the tile and drill a new nail hole a nail this to an elevated batten ? Most of this may end up being covered by the mono ridge tile anyway.
2. Is it usual to fit a whole row of tiles at a time and walk over them to fit the rest ? I'd say its better to diagonally fit them (across and up) and then only have to walk over a few tiles to get down !