this should be REQUIRED in places like new orleans that can flood fast
so someone trapped in a attic has a way out in a flood..........

FWIW, I don't think the problem in NO was that the flooding
was FAST, so much as it that, once the water's high enough
to convince you you'd rather be on the roof, it's already
too deep to go outside. And if you're going to
mandate a roof hatch, are you going to mandate a little
rubber raft, too? And little bottle of iodine tablets
and two cans of spam?