As our wonderful home of Gulf Shores is feeling the rainy effects of Isaac, it leads me to think about all the rain damage that he will do to the Gulf Coast area. We are getting some good rain and wind over here, but if Isaac does what The Weather Channel thinks he will do he is going to drop a lot of rain. All of this rainfall (especially in non elevated areas like New Orleans) can build up very quickly and start to flood or even leak into your home through rain soaked roofs. Because of this there is a good chance your drywall could get soaked.
Now depending on the severity of the water leakage you might not need to replace the entire drywall from you attic or walls. You might get lucky enough that your drywall is only damaged (as opposed to ruined) and damaged means it can be repaired. This website, full of tons of disaster ready information anyway, has a link to a great video that talks about your drywall and what to do if it does get water damaged.
Everybody build safe (and dry) out there!!