Not bad for a rainstorm with over 1 inch of water per hour for over 5 hours through the night. Apparently, the only leaks are in places where the screws with their little rubber washers weren't tight enough or where there was a formerly used screw hole that was too big or hadn't been filled in yet. (We're experimenting with recycled tin for our roof. We hope it's going to work out well.)
. . . . . .