Can U Paint Over Wallpaper Border. In an ideal situation you would remove the old wallpaper first re-seal the walls with new primer and then paint or hang new wallpaper. Oil-based paint is a must for painting over wallpaper.
Wetting the wallpaper border with paint will cause loosening on the paste and thus puckering unevenly of the border. If you opt for a latex paint instead the wallpaper below it may become loose which you certainly dont want. Some wall coverings have dyes or pigments in the pattern that can bleed through water-based latex paint.
By painting over it youre potentially creating a much bigger issue in the future.
Painting over the wallpaper may be the better option under these circumstances. You can paint around a wallpaper border if you protect it. If you have long edges of wallpaper unrolling or air bubbles beneath the surface you will be better off removing it completely. Will you re-decorate soon.