How To Remove Wallpaper Glue From Plaster. Wait about 10 minutes and then scrape off the paper with a putty knife. Mix a gallon of hot water and a gallon of white distilled vinegar.
Hot water liquid dish soap and a tablespoon of baking soda. Milligan on May 22 2019 I use Dif wallpaper remover with hot water. Scrape the wallpaper off with a 3- or 4-inch scraper blade.
Mix these altogether in a bucket until thoroughly combined.