To apply wallpaper over existing wallpaper, follow these steps:
Assess the Existing Wallpaper: Ensure the old wallpaper is in good condition—no peeling, bubbles, or damage.
Clean the Surface: Wipe down the old wallpaper to remove dirt, grease, or dust using a damp cloth.
Prime the Surface: Use a wallpaper primer to create a smooth, adhesive-friendly base.
Apply New Wallpaper: Install the new wallpaper following standard application methods, such as aligning seams and smoothing out air bubbles.
This process works best if the old wallpaper is smooth and securely attached.