07-31-2009, 01:43 AM
The right kind of wallpaper can also "hide a lot of sins". But short of redoing the wall with new wallboard over the whole wall, you will probably need to put a skim coat over the whole surface. Then sand it smooth and prime it. It is not just the "low spots" but also all of the different textures, materials and paint absorbency due to the patches that show where the changes were made years ago. Or use the easy way, hide them behind furniture, pictures or whatever fits. Going back to flat finish is also an option.