I have just purchesed a home that is 80 years old. I have found tons of wall paper on drywall. Was thinking of going over it with new drywall. As far as the ceiling I dont have much of a choice. The so called attic has blown-in insulation. If I dare tear down what is already there,(patched drywall from leaks, wallpaper painted over) I would certainley have a mess. Any suggestions appreciated.