1. Benefits of Pro Wallpaper Removal
You never know exactly how the wallpaper removal process will proceed once you start. You could encounter absolutely no problems and the old wallpaper will strip off effortlessly. Or, you could find that the wallpaper clings stubbornly to the walls and you cannot remove it without significant effort.
With a professional on the job, whatever issues you encounter will be within his knowledge base. He will know exactly how to deal with wallpaper that wont loosen from the walls. He will also have the tools and equipment necessary to remove the wallpaper effectively in whatever conditions exist on your walls.
2. Types of Wallpaper
Wallpaper often has a decorative outer surface that sits on an under-layer backing with glue. The outer surface might be foil or it could have an acrylic finish coating the wallpaper. Some older wallpaper might even have a vinyl layer on the surface.
If the surface layer of the wallpaper is not porous, this complicates the removal process because the wallpaper solvent will not absorb through the wallpaper to activate with the glued under-layer. In this case, the professional will use a special tool that scores the entire surface of the wallpaper. This scoring creates small holes throughout the wallpaper that will facilitate absorption of the solvent for loosening and removing the wallpaper.
3. Age of Wallpaper/Difficulty of Removal
The way wallpaper separates and removes from walls depends on how the walls were prepared before hanging the wallpaper. If the wallpaper hangers primed the walls properly prior to hanging the wallpaper, you will probably find that the wallpaper comes off easily. If the wallpaper hangers did not prime and prepare the walls, the wallpaper will not remove easily and special tools and equipment will be necessary for the removal process.
You might have wallpaper that has a layer of paint over it. This situation creates a complicated removal process that will require a wallpaper steamer to loosen the wallpaper. The steaming process will be involved and messy and not pleasant for a do-it-yourselfer, but standard operating procedure for a professional with the right tools and the skills to handle these conditions.