So we're in contract in our first home. Just had the inspection. House is 90 years old and most of the ceilings are fine, but in half of the upstairs the plaster ceiling was damaged and is even sagging in places. Previous owner put up drop ceiling to hide it, but it's hideous. Can we rip out the drop ceiling and drywall over the old nasty plaster? I'm afraid of what might fall out if we rip out the plaster ceiling. The drop ceiling is in the kitchen too - some areas have wiring under the drop ceiling for the lights. Can we fix this? How much will it cost?!? Any advice would be welcome!