It wouldn't be wise to try and paint on top of existing glue as it will more than likely react and probably flake off.

Step 6. OK. Drywall damage after the arduous task of removing wallpaper can range from some little nicks and scratches to a disaster of torn drywall paper and deep gouges. Ideally you will want to try to get all of the wallpaper off so that you can work with a nice new surface. Most wallpaper removal projects will leave some wallpaper glue residue on the wall. Like i said not an easy process but preparation of surfaces is key to getting a great finish. Roll the primer using a low-nap roller. By removing all the glue from your walls prior to painting, you will be left with a professional finish that will last for years. Wipe off any excess dust with a damp rag. Sand smooth the drywall mud and any glue that has remained on the wall. Only use a soft cloth moistened in acetone to wipe off the surface. Sand with 120- or 150-grit sandpaper. Rub the affected area with the liquid and scrub gently. A light sand once completed can also help. Before you start stripping the wallpaper off your walls, make sure you also learn how to remove wallpaper glue. A light sand once completed can also help. Next, you can use sand paper, scrubber, knife etc. Open the windows, and allow for ventilation prior to use. If you dont get all the glue off it can make paint peel or wallpaper not stick right. It doesn’t take any advanced skills or exotic tools. Some wallpaper will come off easily, but since you're trying to remove it from drywall, it's important to note here that you should not try to pull it right off the wall without scoring it and then applying remover. Sand the area smooth. When trying to remove outdated tiles, you may find the job is not only time-consuming and difficult, but also leaves behind a bigger mess in the form of tile adhesive. How to Remove Wallpaper Paste. If it is just the glue that needs to be removed, you might be better off paying for a professional cleaning service to tackle the project for less than $200. hope this works. Step 1 - Clean Off Old Wallpaper Glue Wash off the wall surface, especially around the holes and rips, with a solution of trisodium phosphate and water, mixed according to the container directions. lightly go over the walls with sand paper to get any bumps off, don't scrub it, then take warm soapy water and wash it. Removing wallpaper is often tricky, and eliminating all of the glue is sometimes impossible. If the glue is on your phone screen, do not use any abrasive material. We definitely agree that this can be a tedious part of the job, but this part can NOT be overlooked when removing your wallpaper. If you plan on painting the walls after wallpaper removal, the drywall has to be fixed, and fixed right, to make all your hard work worth it. Coarser paper may scratch right through the wallpaper, while a finer grit won't abrade it sufficiently. This will clear off rough glue bumps before you start to refinish the surface. It's also recommended that you take some painter's tape and cover all electrical outlets or simply shut power off to the room at this time. How to Paint Over Wallpaper Glue. The results will determine whether you can mud the wall or if you have to strip off …