Can you apply knockdown texture over wallpaper?

Let’s find out.

Understanding Knockdown Texture

Before we delve into whether or not you can apply knockdown texture over wallpaper, let’s briefly understand what knockdown texture is. Knockdown texture is a technique used to create a mottled or stucco-like appearance on walls or ceilings. It involves applying joint compound or texture mud using a trowel or sprayer and then flattening it with a trowel or knockdown knife to create a slightly uneven, textured finish. This technique is known for its ability to hide imperfections on walls and add a unique touch to any space.

Assessing the Wallpaper

The first step in determining whether you can apply knockdown texture over wallpaper is to assess the condition of the wallpaper. If the wallpaper is in good condition with no peeling, bubbling, or loose edges, it may be possible to texture over it. However, keep in mind that applying texture over wallpaper will create a permanent finish, so consider if you are willing to commit to this change before proceeding.

Preparing the Wallpaper

If you have decided to proceed with applying knockdown texture over wallpaper, proper preparation is crucial. Here are the steps to follow:

1. Clean the Walls: Ensure that the wallpapered surface is clean and free of dust, dirt, and grease. Use a mild cleaner and a sponge to gently wash the walls, and allow them to dry completely.
2. Smooth the Wallpaper: If the wallpaper has any noticeable texture or raised patterns, you will need to smooth it out before applying the knockdown texture. Use a high-grit sandpaper or a sanding block to smooth the surface gently, being careful not to damage the wallpaper.
3. Prime the Wallpaper: Applying a coat of primer over the wallpaper will help create a smooth surface for the texture to adhere to. Choose a primer specifically formulated for use over wallpaper, and apply it according to the manufacturer’s instructions. Allow the primer to dry completely before moving on to the next step.

Applying the Knockdown Texture

Now that the wallpaper is prepped and primed, it’s time to apply the knockdown texture. Here’s how to do it:

1. Mix the Texture Compound: Prepare the texture compound according to the manufacturer’s instructions. You can opt for ready-to-use texture mud or mix your own using joint compound and water.
2. Apply the Texture: Using a trowel, putty knife, or texture sprayer, apply the texture compound to the walls in an even and consistent manner. Work in small sections at a time to ensure that you have enough time to create the desired texture before the compound starts to dry.
3. Knockdown the Texture: Once you have applied the texture to the entire wall, use a knockdown knife or a trowel to gently flatten the texture. Hold the tool at a slight angle and pull it across the surface, creating a uniform and smooth finish. Experiment with different angles and pressure to achieve the desired look.

Finishing Touches

After you have completed the knockdown texture application, allow it to dry completely according to the manufacturer’s recommendations. Once it is dry, you can paint over the texture to further enhance its appearance. Choose a color that suits your style and complements the overall design of the room. Remember to use a paint roller with a low nap to prevent overwhelming the texture.

Applying knockdown texture over wallpaper is indeed possible if the wallpaper is in good condition. By assessing the wallpaper, properly preparing the surface, and following the steps for applying the texture, you can achieve a beautiful textured finish over your wallpapered walls. Just be mindful that this process is permanent, so consider your commitment and the desired outcome before proceeding.