Preparing walls for wallpaper is almost as important as the application itself. Why? Untouched walls tend to be bumpy and irregular. As a result, the wallpaper will not lay flat nor adhere well. For this reason, it’s important to take the time to smooth out your walls and get them ready for a little glue and paper. Here’s what to do.
Smooth out walls with sandpaper. For painted walls, it’s important to sand and scrape them until smooth. This process may take a few minutes; so enlist the help of a friend or family member, if possible. Also, don’t forget to lay down a covering, such as a sheet, on the surrounding floor to protect it.
Repair any holes or cracks in your wall. A rule of thumb to follow is to fill in any holes and cracks in the wall that are larger or wider than a dime with plaster or another appropriate filler. This process will help reduce your chances of puckering and other unsightly things that make a wallpapering job look unprofessional. Be sure to let the filler set before you go onto the next step.
Wash your walls with a little soap and water. In a bucket, mix a ½ gallon of water and a drop of liquid soap. Then, wash your walls. Removing excess debris will prepare your walls for better adhesion of the wallpaper. Be sure to let your wall dry before you move on to the next step.
Apply primer sealer to your wall. It’s important to add primer sealer to your wall before you add on wallpaper. Why? It seals the old paint and helps treat any imperfections that you may not be able to see with the naked eye. This is the final preparation step you need to take before you begin to apply your lovely wallpaper.