Wallpapering over existing wallpaper is possible, provided the current paper is in good condition and properly prepared. The key is ensuring a smooth, stable base for the new covering.
Preparing to Wallpaper Over Existing Paper
Before you even think about applying new wallpaper, thorough preparation of the existing surface is crucial. Skipping this step can lead to bubbles, peeling, and a poor finish.
Assess the Existing Wallpaper
The first step is to carefully inspect the current wallpaper. Not all existing wallpapers are suitable for papering over.
- Is it firmly attached? Check corners, seams, and edges for any lifting or peeling.
- What type of paper is it? Heavily textured or vinyl wallpapers are generally not good candidates. A smooth, non-vinyl paper is best.
- Are there imperfections? Look for tears, bubbles, lumps, or stains.
If the existing paper is peeling, heavily textured, or vinyl, it's usually better to remove it completely before starting.
Crucial Preparation Steps
According to reference information, a flat, smooth, and stable base is essential.
- Address Imperfections: You must ensure the wall is completely clear of any imperfections, such as tears, bubbles or lumps. These will show through the new wallpaper.
- Repair Damage: Remove nails and fill in any holes in the walls using a wall filler.
- Smooth the Surface: After filling, sand the filled areas down to be sure you have a perfectly flat surface to paper over.
- Ensure Adhesion: Make sure your existing wallpaper is firmly attached to the wall. Any loose areas must be glued down securely.
Applying a primer specifically designed for wallpapering (often called 'wallpaper primer' or 'sizing') over the prepared existing wallpaper is also highly recommended. This seals the old paper, prevents stains from bleeding through, and provides a surface that new paste can adhere to effectively.
Applying the New Wallpaper
Once the preparation is complete and the primer (if used) is dry, you can proceed with hanging the new wallpaper following standard wallpapering techniques.
- Measure and Cut: Measure the height of the wall and cut the first strip of wallpaper, allowing a few extra inches at the top and bottom for trimming.
- Apply Paste: Apply wallpaper paste to the back of the strip (if not pre-pasted), following the manufacturer's instructions.
- Hang the First Strip: Apply the first strip vertically from the ceiling line, using a level or plumb line to ensure it's straight.
- Smooth and Trim: Use a smoothing tool or brush to press the paper firmly onto the wall, working out any air bubbles. Trim the excess paper at the top and bottom with a utility knife.
- Match Pattern (if applicable): For subsequent strips, align the pattern carefully at the seams.
- Continue: Repeat the process, working around the room, ensuring seams are tightly butted together.
Wallpapering over existing wallpaper can save time compared to stripping, but diligent preparation is non-negotiable for a professional-looking and long-lasting result.
