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. 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. The wallpaper
removal process may involve saturating the wallpaper with a
special solvent to separate it from the wall surface. This process can
be risky because too much moisture may damage the walls. Drywall is
especially vulnerable to damage from over application of wallpaper
solvent. During the removal process, the professional will need to
scrape the walls carefully to prevent gouging or damaging the wall
surface behind the wallpaper. The professional’s tools and specialized
skills should ensure that the wallpaper comes off successfully without
damaging walls.