Do I need to use additional paste on the back of the wallpaper?

If your walls have been prepared, primed, and you have applied your paper according to the our instructions, you should have no need for additional paste. However, some think additional paste creates a stronger bond with the wall and prefer to use this method in rooms with more exposure to moisture such as bathrooms. Additional paste has been used to activate pre-pasted wallpaper by brushing a paste solution across the paper instead of activating it in a water tray. If you decide to use this method, thin the paste down to a watery consistency and apply the coat evenly to avoid bubbling in the paper.