I have the end garage in a row of six, at my end I have the down pipe for the whole rows guttering. Nobody clears their gutters so my garage gets flooded near the door everytime it rains. The big question is "do I need the gutter bit at my end?" At the back of the garage their is no guttering and it is bone dry, all the other two rows of garages have no guttering, so do I really need it?