Here are some other specialized types of drywall you may need at some point.
Flexible If you have a curved wall, this innovation can be very handy, since it bends to the curve without painstaking and messy scoring of the paper. On outside curves, you can bend it to fit a curve with a 7″ radius or move. On inside curves, you’ll be able to handle curves with a 10″ radius or more. As it’s only 1/4″ thick, you’ll need to either shim the studs by 1/4″ or install the drywall in two layers, so you end up flush with the standard 1/2″ on the other walls. It’s not moisture resistant or fire rated.
Foil-backed This kind of drywall does two jobs at once. The foil backing provides a vapor barrier to keep moisture from getting beyond the insulation and condensing. It’s not moisture resistant or fire rated.
54″ width. A lot of older homes — and some newer ones — have 9′ ceilings. Since most drywall is 4′ wide, drywallers traditionally installed the sheets horizontally with a 12″ strip in between. This odd-width drywall is designed specifically for eliminating that strip in houses with 9′ ceilings.
Abuse resistant. Got “active” kids and a rec-room which takes a lot of abuse? Fiberglass-cored drywall — used primarily in industrial construction — is designed to take impacts from bodies and hard objects. The board is heavy and is usually fire coded and sound rated.
Exterior wallboard This is a cheaper alternative to plywood sheathing to provide a base for brick veneer, siding or stucco. It will withstand external conditions, but only for awhile, and must be covered eventually.