Hi Hedge'
A bit more than a year ago I heard a similar
WHUMP! while driving through a residential neighborhood in Livingston NJ (a very long way from my home!). I glanced in the rear view mirror in time to see a bunch of debris falling to the ground. Yep, I had that sick feeling too :o
I turned the truck around to figure out what I'd hit and discovered tree branch that stretched across the entire lane of the 2-lane road, and of course
my branch had same three or four feet of bark missing that your branch did. Gah! Why hadn't the resident and/or city trimmed this tree!?!
It was incredibly fortunate that the
only thing that the branch contacted was the fridge vent. It could just as easily have been my solar panels or crank-up satellite dish... or my TPO roof. Later that same day it started raining so it was also convenient that I have a DC fridge and didn't need the ventilation.
I covered up the hole in the roof the best I could with a lawn 'n leaf bag and half a roll of Gorilla tape, then ordered a new vent, putty tape, & a tube of Dicor online and had 'em shipped general delivery to a post office at our next destination. I completed the repair a week later in a Home Depot parking lot (after picking up screws, Great Stuff insulation, and a caulk gun).
Cheers,
-Mark