Removing old wallpaper is important before applying a new mural. New wallpaper often doesn’t stick well to an existing layer because wallpaper adhesive contains water. This can cause the old wallpaper to come loose or create bubbles in the new wallpaper, which you want to avoid.
Start with good preparation. Protect the floor and furniture with a drop cloth and, if possible, turn off the electricity. Remove skirting boards and outlets so you can also reach any leftover wallpaper behind them.
Soak the wallpaper with plenty of water to loosen the adhesive. If needed, use a wallpaper perforator to help the water penetrate. Then carefully scrape off the wallpaper with a putty knife. Taking the time to leave the wall clean and smooth ensures the best result for your new mural.
