So, the first step before how to prepare the walls for wallpapering will be to remove the previous finish, which can quite seriously and badly spoil all the work of a professional. In some situations, this step is very difficult to perform, but it is necessary to make every effort to remove the old trim. If you skip this stage of the work, then there is no point in continuing it further. In order to be able to remove the old wallpaper, you first need to make it as soft as possible. If once the walls were the usual paper wallpaper, then first you need to wet them with a special soapy solution. In its composition you can add a small amount of glue for wallpaper, so that the solution itself remained on the walls longer and was able to make the old wallpaper softer. If there is a need to remove the dense wallpaper or washable type, then before applying the solution, make cuts on them. This will allow water and soap to get inside the wallpaper and do its job. When the wallpaper becomes soft, then you can begin to remove it. To do this, use an ordinary spatula made of metal. If at the first time it was not possible to completely remove the wallpaper, the procedure is repeated again. There will definitely be places where the wallpaper will remain in place.