Removing textured wallpaper is not any different than removing smooth wallpaper. Depending on the size of the room and the manner in which the paper is applied to the wall, it may take more than 1 day. By following these steps, you will learn how to remove the wallpaper without doing extensive damage to the walls.
To remove wallpaper you need to score it first. Place the wallpaper scorer with the wheels against the wall. Push the wallpaper scorer all over the walls on top of the paper. The wheels have little spikes on them that put holes in the surface of the paper. The holes will allow moisture through to the backing. Do not apply excessive pressure because the spikes will go through to the wall, leaving marks that would have to be repaired. Place drop cloths on the floors and any counter tops.
After the wallpaper has been scored, fill the sprayer bottle with Dif or hot water. Dif is a chemical that helps dissolve the glue on the wallpaper. Completely spray down the wallpaper one wall at a time and allow to set for 10 to 15 minutes. After you have allowed the Dif or water to soak into the paper, you can begin to remove it. Find a seam where the wallpaper has been placed on the wall and using a wall paper scraper or drywall knife, slide it under the seam. Lift up and use your hand to pull the paper off. It is most likely that you will only get the top layer of the paper. The backing will still be stuck to the wall.
When the top layer of paper is completely off and there is still backing stuck to the wall, you can completely soak it with hot water and it will come off a lot easier. Remove the backing from the wall using your wallpaper scraper or drywall knife. Be careful when you are scraping the backing not to gouge the drywall with the scraper. Completely remove the backing from the wall. Spray the next wall down and repeat the removal process.
Sometimes wallpaper can be difficult to remove with Dif. The reason is that the walls were never primed before the wallpaper was installed. This makes the wallpaper stick extremely tightly to the wall. Trying to pull it off will rip the paper on the drywall. If you run into this situation, you can use a wallpaper steamer to remove the wallpaper. Fill the wallpaper steamer with water, plug it in and let set until steam begins to come out of the end. While you are waiting for the steamer to heat up, score the wallpaper. After steam starts coming out of the steamer, place the flat panel on the wall and hold in place for about 1 minute. Move the steamer and begin to pull the paper off. Continue this process across each wall until all of the paper is removed.
If you have damaged the wall, use a drywall knife and ready mix drywall compound to smooth over the damaged areas. Allow to completely dry and sand. Once the damaged areas are repaired, the walls are ready for painting or new wallpaper.