Applying peel and stick wallpaper on wallpaper can transform a room in hours, but what if you want to install it over existing wallpaper? But improper application can lead to bubbles, crooked seams, and sections peeling off over time. Success depends on proper wall preparation, the right tools, and precise installation techniques.
Factors to Consider Before Installation
Before starting, several factors determine the quality of the finished installation:
- Wall Condition: Smooth, clean walls ensure optimal adhesion. Textured or uneven surfaces may require a skim coat before application.
- Wall Cleaning: Grease, dirt, or dust can prevent proper bonding. Using a cleaning solution such as a 70% isopropyl alcohol mixed with water is recommended.
- Wall Drying: Allow walls to dry completely after cleaning. Damp walls can reduce adhesion and cause peeling.
- Humidity and Temperature: Apply wallpaper on days without extreme humidity or temperature fluctuations, as these conditions can affect adhesive performance.
- Wallpaper Quality: Thicker peel-and-stick wallpaper is easier to apply and hides wall imperfections better. Ultra-thin or budget wallpaper is more likely to bubble or tear.
Also read, how to install VJ paneling
Preparation of Existing Wallpaper or Walls
Applying peel-and-stick wallpaper over existing wallpaper is possible, but proper preparation is critical:
- Smooth the Surface: Existing wallpaper should be intact, smooth, and free of loose sections. Remove any peeling or damaged areas.
- Clean Thoroughly: Use an alcohol-and-water solution to wipe down the wall, removing grease, dust, and dirt.
- Dry Completely: Allow at least a few hours for the surface to dry.
Tools, Materials, and Equipment Required
Successful wallpaper installation requires specific tools and materials:
Materials:
- Peel-and-stick wallpaper (preferably mid-to-high quality)
- Wallpaper spray or slip solution (e.g., Roman’s Wallpaper Helper)
Tools:
- Utility knife with fresh blades
- Scissors
- Pencil
- Measuring tape
- Square or ruler
- Level or laser level
- Microfiber cloth
- Soft smoothing tool
- Hair dryer (for removal and final adhesion)
Step-by-Step Installation Process
1. Measure and Cut
- Measure wall height in multiple locations to account for uneven surfaces.
- Add 2 inches to both top and bottom for trimming.
- Mark cutting lines on the wallpaper with a pencil and straight edge.
- For patterned wallpaper, align patterns carefully to ensure consistency across panels.
2. Apply Slip Solution
- Spray a thin layer of wallpaper helper on the wall before applying the wallpaper.
- This creates a micro-slip surface, allowing adjustment for alignment and pattern matching.
3. Position and Apply Wallpaper
- Peel approximately 12 inches of the backing and attach the top section of the wallpaper to the wall.
- Gradually peel the backing downward while smoothing diagonally from the center outward using a soft smoothing tool.
- Avoid pulling or stretching the wallpaper, as this can distort patterns and edges.
4. Match Patterns and Seams
- Overlap seams as instructed by the manufacturer (typically ¼ inch).
- Match patterns at eye level first, then smooth toward the top and bottom.
- Use the smoothing tool to secure edges and prevent peeling.
5. Trim Around Obstacles
- For trim, windows, and outlets, crease the wallpaper along the edge and cut away excess with scissors.
- Use a utility knife and smoothing tool as a straight edge to achieve clean, precise cuts.
- For interior corners, wrap wallpaper around the corner with ¼ inch extra, then start a new panel on the adjacent side for a straight, aligned finish.
6. Eliminate Bubbles
- Smooth wallpaper from the center outward diagonally to remove air bubbles.
- Minor bubbles can be corrected by lifting, repositioning, and smoothing again.
The Result
Peel-and-stick wallpaper can completely transform a room, turning it from plain and boring to a cozy, modern space that fits perfectly with any style. This makeover shows how easily wallpaper can refresh a space. Check out the before and after images to see the dramatic change for yourself.
Maintenance and Removal
To remove peel and stick wallpaper use a hair dryer to warm the adhesive before removal. Pull wallpaper away at a 45° angle while keeping the adhesive warm. This process prevents damage to the walls and makes removal easier.
Tips for a Professional Finish
- Use a laser level for perfectly vertical lines, particularly in older homes with uneven walls.
- Prioritize thicker, high-quality wallpaper to minimize imperfections.
- Always clean walls thoroughly and allow complete drying before application.
- Invest in a soft smoothing tool rather than using improvised hard tools, which can scratch or damage the wallpaper.