Oh yeah. Cleaning.
So, the people who are 're-roofing' or whatever it is they're doing, have got to be the most dedicated workers on earth. They're up there at the crack of dawn (which, in my world, is around 7am), pounding, hammering, scraping, lawn-bowling, playing shotput, I don't know. But they're sure noisy. The whole apartment starts vibrating when they turn on whatever mysterious high-pitched machine they use, and I actually thought the whole roof was going to come down today.