Remove any objects from the walls and room. Cover the whole floor, and any furniture you could not remove, with plastic sheeting for protection.
Fill a clean pump sprayer with 1 gallon of hot water and 5 oz. of wallpaper stripper. Mix the solution and diffuse it onto the wallpaper border. Completely saturate the wallpaper border.
Peel off the wet wallpaper border starting at a curled edge. Use a 3-inch wall scraper to detach stubborn sections of the border. Strip off as much border as possible.
Spray the wallpaper stripper solution onto any remaining wallpaper backing and paste residue.
Scrape the softened backing and paste residue from the wall using the wall scraper.
Scrub any lingering adhesive off the walls with a cleaning sponge and warm water. Let the walls thoroughly air-dry for 48 hours, prior to repainting or installing wallpaper.