Wallpapering over old wallpaper is often considered a shortcut in home decor, but is it a good idea? While it may seem convenient, it’s important to weigh the pros and cons first. This article explores whether applying new wallpaper over old wallpaper is practical and examines its advantages and drawbacks. Aspects like only one layer versus more than one layer, the use of wallpaper paste, vinyl-coated materials, and the importance of a smooth surface are all discussed to help you make an informed decision for your home decor and new paper projects.

Before wallpapering over existing paper, assess its condition precisely. There are many reasons why this step is critical to ensure a high-class result.

• Intact Wallpaper: Check that the existing paper is in good shape, with no problems. Damaged wallpaper can make it difficult for the adhesive to stick and can affect the quality and design of the new one.

• Moisture and Mold: Look for signs of moisture or mold. Trapped moisture can cause mold growth and ruin the new layer. Address any issues in the room before proceeding, as it can impact the future durability of your walls.

Type of Wallpaper Being Covered

When covering wallpaper, it’s important to understand the types and their challenges. Here are key tips:

• Vinyl-Coated Wallpaper: This durable, moisture-resistant option is common in kitchens and bathrooms. It may require extra preparation, such as cleaning the wall and fixing unattached edges. Use a primer and wait for it to dry before applying a fresh coat with paste.

• Fabric Wallpaper: Adds texture and warmth but can be tricky to cover. Ensure it’s firmly attached and fix loose edges for a perfect outcome.

• Paper Wallpaper: One of the easiest types to cover, but only if intact. If it’s peeling or damaged, it’s best to remove it first to avoid future issues.

• Textured or Patterned Wallpapers: Patterns or roughness can show through the new layer, making the design unsuitable. In this case, removal is often recommended for the best results.

If your walls have more than one wallpaper, it’s generally difficult to achieve good adhesion. Test a small section to see how well the new wallpaper holds and make adjustments as needed.

Surface Preparation Requirements

Before applying new wallpaper, clean and even out the existing paper for the best outcome.

1. Clean the Wallpaper: Use a mild detergent or cleaner and a sponge to wash off dirt and stains. Avoid applying too much water, especially on vinyl-coated or paper wallpaper.

2. Fix Imperfections: Look for unattached edges or bubbles. Use a smoother or squeegee to press down loose areas and repair them. This will improve adhesion and prevent problems.

3. Prime the Surface: Primer can improve adhesion and create an even wall. Apply a suitable primer, wait for it to dry completely, and then begin applying the new wallpaper with paste.

By following these steps and precisely assessing the condition of the existing paper, you can ensure a successful project with a high-quality outcome.

Can You Put Peel and Stick Wallpaper Over Wallpaper?

When applying peel and stick wallpaper over existing wallpaper, consider these key aspects:

Condition of Existing Wallpaper

Make sure the wallpaper is firmly attached with no unattached edges or damage. If it’s peeling, get rid of it before applying the new wallpaper.

Adhesive Limitations

Peel and stick wallpaper works best on flat surfaces in good condition. It may not stick well to rough or heavily patterned wallpaper. Test a small area first to ensure proper adhesion.

Uneven Surfaces

Embossed or rough wallpapers can cause lifting or bubbling. For superior outcome, flatten out imperfections or remove the old wallpaper.

Testing a small area and starting with a stable surface will help ensure a clean, professional outcome.

Step-by-Step Guide: How to Wallpaper Over Existing Wallpaper

Enhancing your walls with new wallpaper can be a rewarding project that transforms the look and feel of a room. If you're considering wallpapering over existing wallpaper, follow these steps for a successful installation.

Inspect the Existing Wallpaper

Before wallpapering over existing wallpaper, inspect its condition carefully. Follow these steps for easy installation:

1. Check for problems: Look for peeling, bubbling, or tears, as these can affect the new wallpaper’s adhesion and finish.

2. Repair or remove problem areas: Flatten down unattached edges or bubbles and reapply adhesive if needed. Discard torn or severely damaged sections before continuing.

 

Clean and Prepare the Surface

Proper wall preparation is key to flawless wallpaper installation. Here’s how to get the walls ready:

1. Dust Removal: Use a soft cloth or duster to remove dust, especially in corners and baseboards.

2. Grease Removal: Clean walls with a mild detergent diluted in warm water. Wipe with a sponge or cloth, then rinse with clean water.

3. Smoothing Seams: Use a seam roller to flatten visible seams or ridges in existing wallpaper.

4. Repairing Imperfections: Fill holes or cracks with spackling compound. Once dry, sand lightly with fine-grit sandpaper for a perfect finish.

By cleaning, smoothing seams, and fixing flaws, you'll create the perfect surface for lasting, polished wallpaper.

 

Apply a Primer (Optional but Recommended)

Using wallpaper primer before installation improves adhesion and creates an even wall for a flawless finish. Here's how:

• Better Adhesion: Primer strengthens the bond between the wall and wallpaper, reducing the risk of peeling over time.

• Sealing and Smoothing: It seals porous surfaces like drywall, preventing them from absorbing adhesive too quickly, and evens out imperfections.

• Increased Durability: We recommend primer because it adds a protective coating, making wallpaper more resistant to stains, moisture, and wear for lasting beauty.

Choose a primer made for wallpaper. While optional, it’s highly recommended to boost adhesion and durability.

 

Measure, Cut and Apply the New Wallpaper

For a clean wallpaper installation, follow these steps:

1. Measure and Prepare: Measure the wall height, adding a few extra inches for trimming. Unroll the wallpaper face down, mark measurements, and create a guide.

2. Cut the Wallpaper: Cut along the guide with scissors or a utility knife.

3. Match Patterns and Seams: Align patterns carefully for a seamless look. Check the manufacturer’s instructions.

4. Apply Wallpaper: For peel-and-stick wallpaper, peel the backing and stick it from top to bottom, evening it out as you go. For traditional wallpaper, apply adhesive paste and flatten onto the wall.

5. Smooth the Wall: Use a smoothing tool to get rid of bubbles or creases, working outward from the center.

Pros and Cons of Wallpapering Over Wallpaper

Pros

• Saves time and effort: Wallpapering over existing wallpaper is a quicker alternative to removing old layers. It skips the need for scraping, soaking, and stripping, making the process more efficient.

• Reduces wall damage: Removing wallpaper can damage walls and require repairs. Wallpapering over it minimizes the risk and preserves the wall's condition.

Cons

• Risk of Poor Adhesion: If the current wallpaper isn’t clean, even, or free of loose sections, the new wallpaper may not stick properly.

• Adds Bulk to the Wall: Layering wallpaper increases wall thickness, which can cause peeling or lifting issues over time.

• Layer Limits: It’s best to limit wallpapering to 1-2 layers. More layers can weaken the stability of the application.

When Should You Remove Old Wallpaper Instead?

 

Textured or Damaged Wallpaper

If the wallpaper is heavily damaged, remove it before installing new wallpaper for a perfect outcome.

Switching Wallpaper Types

When changing from one wallpaper type to another (e.g., vinyl to paper), remove the old wallpaper for better adhesion and compatibility.

Mold or Moisture Damage

If mold or moisture damage is found under the wallpaper, remove it immediately. Addressing these issues prevents further damage and promotes a healthier environment. 

Wallpapering over existing wallpaper can work, but it requires careful preparation. Make sure the current wallpaper is in good condition, and firmly attached. Remove any loose or peeling sections and fix imperfections before adding a new layer.

Avoid layering too many wallpapers, as this can weaken stability. If the old wallpaper is textured, damaged, or incompatible with the new one, it’s better to remove it.

If there’s mold or moisture damage, remove the wallpaper immediately to prevent bigger issues. By considering these factors, you can decide whether to wallpaper over or start fresh for the best results.