Removing Wallpaper Paste Before Painting. Use a scoring tool to create holes in the wallpaper. How to Remove Wallpaper Glue with Heavy-Duty Sponging In a large bucket mix together hot water and a large spoonful of dish detergent until it is frothed up and soapy.
How to Remove Wallpaper Glue From Walls Before you can remove the glue or adhesive left on the walls of a room you must first remove the top layer of the wallpaper. Remember to scrub a small section then. Spray water into the slits so it can work its way behind the covering.
Use a scoring tool to create holes in the wallpaper.
Soak a heavy-duty sponge into the mixture. These techniques can be used on walls finished with paneling drywall or plaster. See an easy way to remove wallpaper paste when removing wallpaper and repainting. Since the gel clings to the wall you can scrape off the gel and the paste at the same time with minimal cleanup.