The simplest removal option is to brush the paper with water. Water soaks through the paper and saturates the glue, allowing the paper to be peeled off.
This does not work well with non-peelable vinyls, as vinyl is not porous. Nevertheless, it is still effective on many modern papers.
A mixture of 3:1 or 1:1 water and white vinegar is effective at dissolving glues. If the wallpaper is scored or sanded with a 20 grit floor sanding pad to scratch the surface solution, uptake will be more effective.
Chemical wallpaper stripper
Chemical wallpaper stripper can be purchased at most paint or home improvement stores. It is mixed with warm water or a mixture of warm water and vinegar, then sprayed onto wall surfaces. Several applications may be required to saturate the existing wallpaper. Perforation can aid in the absorption of the mixture and lead to faster removal. After the mixture has dissolved the wallpaper paste, the wallpaper can be removed easily by pulling at the edges and with the aid of a putty or drywall knife.
Another method of removal is to apply steam to wallpaper in order to dissolve the wallpaper paste. A wallpaper steamer consists of a reservoir of water, an electric heating element, and a hose to direct the steam at the wallpaper. The steam dissolves the wallpaper paste, allowing the wallpaper to be peeled off. However, care must be taken to prevent damage to the drywall underneath. Sometimes steaming can lead to the crumbling of underlying drywall or plaster, leaving an uneven surface to be repaired.