The most common mistake when learning how to paste wallpaper is not preparing the surface correctly. If your walls are uneven, dusty, or have old paint peeling, the new wallpaper will likely bubble or peel off prematurely. Before you even open a can of paste, clean your walls thoroughly with a mild detergent and water solution. Rinse with clean water and allow them to dry completely. Fill any holes or cracks with spackle, sand smooth once dry, and wipe away dust.
Next, you need to decide on the type of wallpaper paste. For standard paper-backed wallpapers, a clear strippable paste is usually sufficient. However, if you’re using heavier vinyl, fabric, or natural fiber wallpapers, you’ll need a more robust adhesive. Look for pastes specifically designed for your wallpaper type. For example, non-woven wallpapers often require a specific type of paste, and it’s crucial to use the right one to ensure proper adhesion and longevity. You can find detailed information in our non woven wallpaper paste buying guide.
Choosing the right wallpaper paste
Wallpaper paste comes in several forms: powder, which you mix with water, and pre-mixed. Powdered pastes are often more cost-effective and allow you to adjust consistency, but require careful mixing to avoid lumps. Pre-mixed pastes are convenient but can be more expensive and may have a shorter shelf life once opened. The consistency of your paste is critical. It should be smooth and spreadable, similar to pancake batter. Too thin, and it won’t hold; too thick, and it will be difficult to spread evenly and may show through lighter wallpapers.
When selecting a paste, consider the weight and material of your wallpaper. Heavy-duty vinyl or textured wallpapers need a stronger adhesive that can handle the extra weight and porous surface. Lighter, standard papers can often use a general-purpose adhesive. Always check the wallpaper manufacturer’s recommendations for the type of paste to use. Some manufacturers specify a particular brand or type of paste to avoid voiding warranties.
For specific applications like high-moisture areas, you might need a mildew-resistant paste. Bathrooms and kitchens are prime examples. While prepasted wallpaper can be a good option for these areas, if you’re using traditional pasted wallpaper, ensuring your paste has anti-mildew properties is essential. For more on prepasted options, check out our guide on prepasted wallpaper for bathrooms.
Mixing powdered wallpaper paste
If you’re using a powdered paste, follow the manufacturer’s instructions precisely. Typically, you’ll start with the recommended amount of cool water in a clean bucket. Gradually whisk in the powder, ensuring it dissolves completely to prevent lumps. Some pastes require a resting period after mixing, during which the starches swell and the paste thickens. This allows for optimal adhesion. If you’re using a specific paste like Roman PRO-880, understanding its application is key to avoiding common pitfalls, such as improper seam adhesion. We’ve covered this in detail in our guide on how to use Roman PRO-880 without ruining the seams.
The consistency should be checked by dipping a brush or roller into the paste and observing how it flows. It should coat the brush evenly without dripping excessively. If it’s too thick, add a tiny amount of water; if too thin, add a bit more powder, whisking thoroughly after each addition. Proper mixing ensures the paste will adhere evenly to the wallpaper and the wall.
Applying the paste to the wallpaper
There are two main methods for applying paste: applying it directly to the wall or applying it to the back of the wallpaper. The method you choose often depends on the type of wallpaper and your personal preference.
Pasting the wall
This method, often called ‘paste-the-wall,’ is generally easier and cleaner, especially with newer ‘paste-the-wall’ wallpapers which are specifically designed for this technique. It also simplifies the removal process later. You’ll typically apply the paste directly to a section of the wall, usually enough for one strip of wallpaper. Use a pasting brush or a roller to apply an even, generous coat of paste. Ensure you cover the area slightly wider than the wallpaper strip to allow for overlap and trimming. Avoid getting paste on the finished surface of the wallpaper. Work in manageable sections so the paste doesn’t dry out before you hang the paper.
Pasting the paper
This is the traditional method. Lay your wallpaper strip pattern-side down on a clean, flat surface, like a pasting table. Apply the paste evenly to the entire back of the paper, extending slightly beyond the edges. Use a pasting brush or roller for this. Once the paper is fully coated, ‘book’ it. Booking involves folding the pasted sides of the wallpaper together, paste-to-paste, without creasing. This allows the paste to soak into the paper fibers, a process called ‘tempering,’ which helps prevent the paper from expanding unevenly on the wall. Let it sit for the time recommended by the paste and wallpaper manufacturer, usually 5-10 minutes. Be careful not to over-paste or leave dry spots. For delicate papers, use a softer brush and apply paste gently.
Hanging the wallpaper
Once the paste is applied and the wallpaper is booked (if necessary), it’s time to hang it. Start at a corner or a prominent vertical line, like the edge of a window or door frame. Unfold the top portion of the ‘booked’ strip and align it precisely with your starting point on the wall. Leave a slight overlap at the ceiling and baseboard for trimming later. Gently press the wallpaper onto the wall, smoothing it from the center outwards with a wallpaper brush or smoother to eliminate air bubbles and wrinkles.
Work your way down the strip, unfolding the rest of the paper as you go and continuing to smooth. Ensure the seam of the next strip will align perfectly with the previous one. This is crucial for a professional look, especially with patterned wallpapers. If you’re working with patterned wallpaper, you’ll need to match the pattern at the seams. This often requires ‘booking’ the strip and letting it temper so it can be carefully positioned and trimmed. Consider pastel shades for a softer look, as explored in our pastel bedroom wallpaper guide.
Trimming and finishing
Once the strip is hung and smoothed, use a sharp utility knife and a straight edge (like a metal ruler or T-square) to trim the excess wallpaper at the ceiling and baseboard. Cut with a single, smooth motion to avoid tearing the paper. Overlap the paper slightly onto the ceiling and baseboard, then trim carefully. This ensures a clean edge. Use a seam roller to gently press down the edges of the wallpaper strips, especially at the seams, to ensure they are securely adhered. Be careful not to press too hard, as this can flatten textured wallpaper or squeeze out paste, leaving a shiny mark.
After each strip is hung and trimmed, wipe away any excess paste that may have squeezed out onto the wallpaper surface with a damp sponge or cloth. Rinse the sponge frequently to avoid spreading paste. This step is vital for a clean finish. If you notice any small bubbles or lifting edges after the wallpaper has set, you might need to use wallpaper repair paste. Our guide on wallpaper repair paste can help you fix minor imperfections.
Common mistakes to avoid
Learning how to paste wallpaper also means understanding what *not* to do. One major pitfall is insufficient paste application. Dry edges or gaps in paste coverage will lead to peeling. Conversely, applying too much paste can cause the paper to become oversaturated, leading to tearing or visible paste marks. Another common error is improper booking, which can result in uneven expansion and difficult seam matching. Rushing the process is also a recipe for disaster; take your time to ensure each strip is perfectly aligned and smoothed.
Using a dull blade for trimming will result in ragged edges and a messy appearance. Always use a sharp blade and change it frequently. Forgetting to wipe away excess paste can leave unsightly marks that are difficult to remove once dry. Ensure you are using the correct type of paste for your wallpaper – using a paste that’s too weak for a heavy vinyl will result in failure. Always check the wallpaper’s instructions and the paste’s recommendations.
Sub-standard wall preparation is another common mistake. Trying to paste wallpaper over a poorly prepared surface will lead to a poor final result, regardless of how well you paste and hang the paper. This includes not filling holes, not sanding, and not cleaning the walls properly. The wall surface needs to be smooth, dry, and free from grease or dirt. For optimal results, consider priming the walls with a wallpaper primer, which creates a uniform surface and makes future removal easier.
Tools and materials checklist
To successfully paste and hang wallpaper, gather these essential tools:
- Wallpaper paste (appropriate type for your wallpaper)
- Clean mixing bucket
- Whisk or mixing stick
- Measuring tape
- Level or plumb bob
- Utility knife with extra blades
- Straight edge (metal ruler or T-square)
- Pasting brush or roller
- Wallpaper smoothing tool or plastic smoother
- Damp sponge or cloth
- Ladder or step stool
- Pasting table (optional, but recommended)
- Drop cloths to protect your floor
When to call a professional
While learning how to paste wallpaper can be a rewarding DIY project, there are times when hiring a professional is the better choice. If you have intricate patterns that require precise matching, complex room layouts with many corners and angles, or if you’re working with very delicate or expensive wallpaper, a professional installer can save you time, money, and frustration. They have the experience and specialized tools to handle challenging situations and ensure a flawless finish that you might not achieve on your own.