Until next year, anyway.
We have an extension built onto the back of the dining room. This is laughingly called the conservatory, but it is really a glorified glory hole with a freezer, tumble drier, wet weather gear, muddy boots and, on occasion, a wet and/or muddy dog. To allow as much light as possible into the dining room, the roof of this extension is made of corrugated plastic and once a year I have to get rid of the moss and generally clean up the roof. This involves climbing onto the flat roof of the kitchen extension (which is, fortunately, solid), pull up a ladder and a crawling board, and lay these over the plastic roof. I then have to crawl over the ladder to clean the roof, hoping that the plastic doesn't give way beneath me.
It's not a job I enjoy, but yesterday afternoon I screwed my courage to the sticking point and got it done.