How to prepare the wall for pasting seamless wallpaper?

  1. Remove old the wallpaper or paint if the wall has been painted. 
  2. Putty all the irregularities, cracks and chips, and then treat the wall with acrylic primer of deep penetration. Do not use latex paint as a primer; it will give rise to bubbles, separation of seams and peeling of the wallpaper! Treat the wall with antiseptic if necessary. 
  3. Having made sure that the surface being pasted is smooth, absolutely dry, and has no dust and grease, you can start appling the paste on the photo wallpaper.