@markc not sure of the overlap, but the tiles are designed for this pitch. I am more worried about the gap, but no water has come in yet and been some heavy rain. That said only been on for less than a week.
Can anybody let me know if this is an issue on a newly retiled roof? There are several tiles which don't seem to follow a straight line and subsequently there are a few tiles which aren't completely interlocked. Is this a problem other than aesthetics. Many thanks.