I need to access the edge of the roofing tiles at the top of the angled side. I have been told never to lean a ladder against the tiles which cover the top half of my house (not talking about the roofing tiles here). The repair is easy to do, I just can't get to it. Please advise me. More detail if you look at the photos: there is a gap in the cement channel to the left of the pinnacle, between the layer of roof tiles and the bargeboard. I can't lean my ladder against the side tiles to get to it.