I could not find any F-shaped side end cap for this Sunlite 8mm sheet. So I might have to fix the side end directly to batten timber with screw. Then I may overhap sheet at least 5 cm from the last rafter and batten end to prevent water flow along the last rafter. Is there any better way to finish side end? Is there any small strip I can to put in the side end so that water does not flow over the side end or ensure water follow straight down to the gutter? Or do I have to add facia and gutter along the side by the last rafter?