高推荐石膏, 但你需要去掉现有的墙纸平面比较好看 并会给你更好的结束, 特别是如果你画画

There are a few options that you can do all depending on your budget first take all your paper of the walls and ceiling so that you could assess the state of your ceiling and walls first where the cracks are tap to hear if hollow on all effected areas if the plaster is sound as does not have a hollow sound then it may be ok to sand and fill, once dry sand and you could paint depending on your taste if the walls and ceilings are good and sound not damp you could tape all the crack pva or grit bond ceilings and walls and then plaster where needed if the ceilings and walls are hollow and damp then call you local plasterer for advice on what can be done

推荐石膏结局会看起来更好 画过它或试图让它好看 用填充器和装饰器culk+修复它 会花点时间 成本会上升

并平滑地画完, 平滑地画出无忧无虑之事