I don’t know how roofers do it. But do it they do. It sounds a bit like a cross between Morris dancers and woodpeckers at the moment. I think they are trying to get something down before the thunderstorms come through tonight.  Which would be wise, seeing as it is the northwest corner of the house that is being re-done and it is a bit large for decent tarp coverage.  It did need it….it had been closing in on sixty years before it finally really failed this summer.  Which is pretty good for asphalt shingles! Never mind exposure to countless thunderstorms, snow drifts of several feet, ice, a few decent hurricanes, and a lot of sun. I bet the new ones won’t last that long.  If they do, I’ll be ninety odd!