As it turns out, we did have a little Isabel damage: the dome on the roof that covers the attic fan was blown away. The fan itself fanned its last rotation this summer, so it’s definitely time to just replace the fan. I was worried about this being some huge multi-step process, but I found an electrician that can do the work — all the work — today. They called about half an hour ago to let me know they were on the way. So now I’m just waiting.