Wallpapering over tile is possible, but requires careful preparation to ensure proper adhesion and a smooth, lasting finish. Here's a step-by-step guide:
Preparing the Tile Surface
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Clean Thoroughly: Begin by scrubbing the tile and grout with a mild cleaner, like a degreasing dish soap solution or TSP (trisodium phosphate). This removes dirt, grease, and grime that could interfere with adhesion. Rinse well with clean water and allow the tiles to dry completely.
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Sand the Tiles: Use medium-grit sandpaper (around 120-grit) to lightly sand the glazed surface of the tiles. This creates a slightly rough texture that will help the primer adhere. Be sure to sand all tile surfaces you intend to wallpaper. Wipe away any sanding dust with a damp cloth.
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Apply Primer: Apply a high-quality, bonding primer specifically designed for slick surfaces. Epoxy-based primers or those labeled for use on tile or glass are ideal. Follow the manufacturer's instructions regarding application and drying time. This primer is crucial for creating a strong bond between the tile and the wallpaper. Multiple coats may be necessary, especially if the tile is particularly glossy.
Wallpapering
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Measure and Cut the Wallpaper: Accurately measure the area you will be wallpapering, accounting for any patterns that need to be matched. Cut the wallpaper to the correct size, adding a few extra inches at the top and bottom for trimming.
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Apply Wallpaper Paste (if necessary): If using traditional wallpaper, apply wallpaper paste evenly to the back of the paper, following the manufacturer's directions. Fold the pasted sides together (booking) and allow the paste to activate for the recommended time. If using pre-pasted wallpaper, activate the adhesive according to the manufacturer's instructions, typically by wetting the back of the paper.
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Apply the Wallpaper: Carefully position the wallpaper on the primed tile surface, starting at the top and working your way down. Use a smoothing tool or plastic smoother to remove any air bubbles and ensure good contact between the wallpaper and the primed tile. Work from the center outwards.
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Trim Excess Wallpaper: Use a sharp utility knife or razor blade to trim any excess wallpaper at the top and bottom, along the edges, and around any fixtures.
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Allow to Dry: Allow the wallpaper to dry completely according to the manufacturer's instructions. This can take several hours or even overnight.
Important Considerations
- Grout Lines: The grout lines between the tiles will likely be visible through the wallpaper. If you want a perfectly smooth surface, you'll need to fill the grout lines with joint compound before priming. Sand the joint compound smooth after it dries.
- Moisture: Avoid wallpapering tile in areas with high moisture, such as inside a shower, as the moisture can cause the wallpaper to peel. Areas like kitchen backsplashes may be suitable if prepared correctly and splash zones are avoided.
- Wallpaper Removal: Keep in mind that removing wallpaper applied over tile can be challenging. The adhesive bond is often strong, and removing the wallpaper may damage the primer layer or even the tile surface.
