Learning how to wallpaper is one of the most rewarding DIY skills you can add to your home improvement toolkit, yet a surprising 78% of homeowners choose paint over wallpaper primarily for convenience, citing the difficulty of the installation and removal process. The good news is that with the right preparation, tools, and technique, wallpapering is well within reach for any confident DIYer.

Key Takeaways

Tools and Materials You Need Before You Start Wallpapering

Before you begin learning how to wallpaper, gathering the right tools makes a significant difference in your results. Rushing to start without the proper equipment is the number one reason DIY wallpaper projects go wrong.

Here is a complete list of what you will need:

• Wallpaper rolls (with 20% extra for waste and pattern matching)
• Wallpaper paste (or pre-mixed paste for paste-the-wall paper)
• Paste brush or roller
• Pasting table
• Plumb bob or spirit level (for straight vertical lines)
• Tape measure and pencil
• Wallpaper scissors or a craft knife and straight edge
• Smoothing brush or plastic smoother
• Seam roller
• Bucket and sponge (for wiping paste from the surface)
• Stepladder
• Lining paper (optional but recommended for uneven walls)

Having everything laid out before you cut your first drop saves time and reduces frustration throughout the project.

How to Wallpaper a Room: Preparing Your Walls Properly

Proper wall preparation is the foundation of a successful wallpapering job. Skipping this step is the most common mistake beginners make when learning how to wallpaper.

Step 1: Strip old wallpaper. If there is existing wallpaper on the wall, remove it fully using a scraper and warm water or a wallpaper stripper solution. Allow the wall to dry completely before proceeding.

Step 2: Fill any holes or cracks. Use a ready-mixed filler to patch any damage. Once dry, sand the surface smooth with fine sandpaper.

Step 3: Wash the walls. Clean walls with a mild detergent solution to remove grease, dust, and any remaining adhesive residue. Rinse with clean water and let them dry fully.

Step 4: Apply size or primer. Sizing the wall (applying a diluted paste solution or a dedicated primer) seals the surface and makes it easier to slide the wallpaper into position. This step is especially important on fresh plaster, which will otherwise absorb paste too quickly.

Step 5: Hang lining paper. For walls with imperfections, hanging lining paper horizontally (cross-lining) before your decorative wallpaper creates a much smoother surface. This is what professional decorators do on older or uneven walls.

A concise 5-step guide to wallpapering, illustrating prep, cutting, hanging, and finishing.

How to Calculate How Much Wallpaper You Need

Getting your wallpaper quantities right before you start is critical. Running out of wallpaper mid-project can cause serious problems, especially if your chosen pattern goes out of stock.

To calculate how much wallpaper you need, follow these steps:

1. Measure the total perimeter of the room in metres.
2. Multiply the perimeter by the ceiling height to get your total square meterage.
3. Subtract the square meterage of any large openings (doors, windows).
4. Divide the result by the coverage area of a single roll (usually printed on the label).
5. Add at least 20% extra to allow for pattern repeats and cutting waste.

"Pattern repeats can significantly increase the amount of wallpaper you need. Always check the pattern repeat length on the label and factor it into your calculations."

If you find maths calculations tricky, use our free wallpaper roll calculator to get an accurate roll count instantly. It takes the guesswork out of ordering and helps you avoid costly mistakes.

How to Wallpaper Step by Step: Cutting and Pasting Your Paper

Once your walls are prepared and your quantities are confirmed, it is time to start cutting and pasting. This is where the real work of learning how to wallpaper begins.

Cutting your drops:

1. Unroll the wallpaper on your pasting table.
2. Measure the wall height and add 5 to 10 cm at each end for trimming allowance.
3. Cut the first drop and use it as a template to cut subsequent drops, matching the pattern as you go.
4. Number each drop lightly in pencil on the back so you know the hanging order.

Pasting your drops (for paste-the-paper wallpaper):

1. Lay the paper face down on the pasting table.
2. Apply paste evenly using a paste brush, working from the centre outward to avoid dry edges.
3. Fold the pasted paper loosely (paste side to paste side) without creasing it. This is called "booking".
4. Leave the booked paper to soak for the time recommended on the label, usually 3 to 5 minutes. This prevents bubbles and ensures the paper is pliable.

For paste-the-wall wallpaper: Apply paste directly to the wall with a roller, then hang the dry paper straight from the roll. This method is faster and less messy for beginners.

How to Hang Wallpaper: The Step-by-Step Hanging Process

Hanging your first drop correctly sets the tone for the entire room. Take your time with this stage, as any error here will compound as you work around the room.

Step 1: Find your starting point. Use a plumb bob or spirit level to draw a perfectly vertical line on the wall. Start next to a door or in a less visible corner so any final misalignment is hidden.

Step 2: Hang the first drop. Unfold the top half of the booked paper and align the edge with your vertical pencil line. Allow 5 cm of excess to fold onto the ceiling. Smooth the paper from top to bottom using a smoothing brush or plastic smoother, working from the centre outward to push air bubbles to the edges.

Step 3: Unfold the bottom half. Smooth the lower section of the drop in the same way, ensuring the paper sits flush against the wall with no air pockets.

Step 4: Trim the excess. Use a straight edge and sharp craft knife (or scissors) to trim the paper neatly at the ceiling and skirting board. Run a seam roller lightly along the edges for a clean finish.

Step 5: Hang subsequent drops. Butt each new drop tightly against the previous one, matching the pattern precisely at eye level. Wipe away any paste that squeezes from the seams immediately with a damp sponge.

You will notice your speed and confidence increase dramatically after the first wall. In fact, the second wall of a wallpapering project typically takes about 50% less time than the first, which means most beginners are moving at a comfortable pace well before lunchtime.

How to Wallpaper Corners, Windows, and Tricky Areas

Corners and architectural features are where wallpapering becomes more technically demanding. However, each tricky area has a reliable method to handle it cleanly.

Internal corners:

• Measure the gap from the last full drop to the corner at three different heights (top, middle, bottom), as walls are rarely perfectly straight.
• Cut the paper to the widest measurement plus 1 to 2 cm for overlap.
• Hang the piece into the corner, smoothing the overlap onto the adjacent wall.
• Draw a new vertical plumb line on the adjacent wall and hang the next piece against it, slightly overlapping the corner wrap.

External corners:

• Wrap at least 2 cm of paper around the corner for strength.
• Use a new plumb line on the return wall and overlap the wrap slightly.
• If using a bold pattern, try to centre it on the external corner for visual balance.

Around windows and doors:

• Hang the drop over the window opening, then make diagonal relief cuts toward the corners of the architrave.
• Trim carefully around the frame, leaving a 5 mm edge to tuck behind the architrave where possible.
• For window reveals, cut small infill pieces to cover the short walls inside the recess.

Around switches and sockets: Turn off the power at the fuse box before working near electrical fittings. Hang the paper over the fitting, make a star-shaped cut in the centre, and trim back to the edge of the fitting before loosening the faceplate and tucking the paper behind it.

How to Wallpaper Using Peel-and-Stick Paper: The Beginner-Friendly Option

Peel-and-stick wallpaper has become one of the most popular wallpaper trends in 2026, particularly for renters and those who want to change their décor more frequently without permanent commitment.

Peel-and-stick wallpaper typically shaves 30 to 60 minutes off the total installation time compared to traditional paste-applied paper, making it an attractive option for anyone new to wallpapering.

Here is how to wallpaper using peel-and-stick paper:

1. Clean the wall thoroughly. Peel-and-stick adhesive requires a grease-free, smooth surface to bond properly. Wipe down with an isopropyl alcohol solution and let it dry completely.
2. Draw a plumb line. Even with self-adhesive paper, a straight vertical reference line is essential.
3. Peel and reveal gradually. Peel back just 20 to 30 cm of the backing at a time to keep control. Press the exposed section against the wall and smooth downward before peeling more.
4. Smooth as you go. Use a plastic smoother or credit card to press the paper flat and eliminate air bubbles. Work from the centre outward.
5. Trim as usual. Use a sharp craft knife and straight edge to trim the top and bottom edges neatly.

The repositionable nature of most peel-and-stick papers means you can peel it back and re-hang if you make a mistake, giving beginners much more flexibility than traditional paste methods.

Finishing Touches and Common Wallpapering Mistakes to Avoid

Once all your drops are hung, a few final steps ensure a truly professional-looking result.

Finishing steps:

• Go over all seams with a seam roller for a flat, invisible join.
• Wipe down the entire surface with a barely damp sponge to remove any remaining paste.
• Allow the wallpaper to dry naturally without applying heat. Forced drying causes shrinkage and lifting seams.
• Check for any lifted edges or air bubbles once dry and apply a small amount of paste to fix them.

Common mistakes to avoid:

Pairing Your Wallpaper with the Right Paint: Finishing the Room

Wallpaper rarely lives on every wall in a room. In 2026, the most popular decorating approach combines a single statement wallpapered wall (the "feature wall") with coordinating painted walls on the remaining three sides.

Choosing the right paint colour to complement your wallpaper makes a huge difference to the final result. Pull a secondary colour from the wallpaper's pattern and use it on the adjacent walls for a cohesive, considered look.

At our Nobletts paint department, we stock Crown Trade Paints across a full range of finishes, from matte to gloss, and offer a bespoke colour-matching service. Bring in a fabric swatch or a photo of your wallpaper and we will mix a custom shade to coordinate perfectly.

Getting Expert Help with Your Wallpaper Project

Even with the best preparation and the most thorough guide, some wallpaper projects benefit from a professional eye. If you are working with an expensive paper, a particularly complex pattern, or a challenging room layout, speaking to an expert before you start can save significant time and money.

At Nobletts Wallpaper, we have been helping customers with decorating projects since 1939. As a fourth-generation family business based in Belfast city centre, our team brings decades of hands-on experience to every question, whether you are choosing your first roll or tackling a full room renovation.

You can reach our team by phone at 02890240678 or visit our contact page to get personalised advice on your project. We are always happy to help you choose the right paper, calculate your quantities, and plan your approach before you pick up a brush.

Conclusion

Knowing how to wallpaper correctly comes down to preparation, patience, and the right technique. From sizing your walls and calculating your roll quantities accurately, to hanging your first perfectly plumb drop and trimming a clean edge around a window frame, every step builds on the last. The more you practise, the faster and more confident you become.

Whether you choose traditional paste-the-wall paper or modern peel-and-stick panels, whether you are tackling a feature wall or papering an entire room, the process of wallpapering is genuinely achievable for any motivated DIYer in 2026. Use our wallpaper roll calculator to plan your quantities, visit us in Belfast for expert guidance, and take the time to prepare your walls properly. Get those foundations right, and the wallpaper will do the rest.

Frequently Asked Questions

How long does it take to wallpaper a room for the first time?

A standard-sized bedroom takes most first-time DIYers between 4 and 6 hours to wallpaper, including measuring, cutting, and pattern alignment. Your speed will increase significantly after the first wall, as the technique becomes more instinctive with each drop you hang.

Do you paste the wall or the wallpaper when wallpapering?

It depends on the type of wallpaper you are using. Traditional wallpaper requires paste applied to the back of each drop (paste-the-paper), while many modern papers are designed for a paste-the-wall method where you apply paste directly to the wall. Always check the manufacturer's instructions on the label before you start.

How do you stop wallpaper from bubbling?

Bubbles in wallpaper are most often caused by insufficient soaking time, applying paste too thinly, or not sizing the wall beforehand. Ensure you allow the full recommended soaking time after booking your drops, apply paste evenly and generously, and always smooth from the centre of the drop outward to push air to the edges.

Is it worth wallpapering just one wall in a room?

Yes. A single feature wall is one of the most popular decorating choices in 2026 and gives a room a strong focal point without the time or cost investment of papering all four walls. It is also a great way to practise your wallpapering technique before committing to a full room.

How do you wallpaper around a light switch or socket safely?

Always turn off the power at your fuse box before working near any electrical fittings when wallpapering. Hang the paper over the fitting, make a star-shaped cut from the centre to each corner of the fitting, trim the excess, and tuck the remaining paper behind the faceplate after loosening the screws slightly.

How much extra wallpaper should I buy to allow for waste?

The standard guidance is to buy at least 20% more wallpaper than your calculated square footage. This buffer covers cutting waste, pattern repeats, and any mistakes during hanging. For large pattern repeats (over 30 cm), you may want to allow up to 25 to 30% extra to be safe.

Is wallpapering worth it in 2026 compared to just painting?

Wallpaper offers textures, patterns, and a depth of design that paint simply cannot match, making it a worthwhile choice for anyone who wants a distinctive, personalised space. While paint is faster to apply and easier to change, wallpaper on a feature wall adds lasting character to a room and can be installed successfully by any prepared DIYer following the correct steps.