Declan Rogers
Hi Sharon, It depends on just how bad the surface of the walls are and the standard of finish you require. If you require a top quality finish, you will most likely need to fill and rub down, or maybe skim the walls. If you are looking for a quick fix without preparing the walls, be sure to wash the walls down to remove any wallpaper paste residue. Sugar soap is good for this. I hope your works go well, Declan
