First some history. I have a Conservatory fitted to my bungalow, and ever since it was 1st installed it was known the drop, so the rain would run off into the gutter, was on the shallow side. Not much of an angle. But that's what it had to be and what we wanted. The actual roof was some new at the time, about 3" thick, triple wall construction I cannot find online now, with aluminium bars, and to seal against the weather, lead strip was used, tucked up under the roof tiles, and then, shaped around the shape of the room panels and spars. There has been a little water ingress due I'm sure to this lead lifting, and roof moss causing water to back-track due to the very shallow slope. So, I wish to find a way to seal this. My problem is, I can't reach it from a ladder on the ground as I can only physically reach half way across the roof depth of 6ft. I do not wish to lay on the roof and put my weight on it, due to it's age. Ideally I'd kneel on the house roof, but gravity and the angle means I'm going to fighting falling down and onto the conservatory roof all the time. I'm thinking Clear Silicon Sealant, and/or very flexible weatherproof repair tape. But I need to get there. I did think about making some weird DIY super long silicon gun on the end of a bit of wood, but there would be no precision and trying to see what I was going from 6ft away. How can I get to the blue bit in the image below.? I did wonder about a plank of wood, on the roof tiles, and supported on a ladder other end, but that's going to want to slip down the roof and does not sound very safe. Of course a cherry picker would be ideal but way overkill and expensive to hire. Any ideas how I can get to that blue area with my hands to get close?