Installing wallpaper may seem straightforward after watching a few online tutorials, but achieving a professional-looking finish requires careful planning, proper wall preparation, and attention to detail. Small mistakes made before the first strip goes on the wall often lead to wasted wallpaper, visible seams, air bubbles, or costly rework later.
Whether you’re hanging wallpaper for the first time or have completed DIY projects before, following proven installation techniques can save both time and materials. In this guide, our professional wallpaper installers share practical tips gathered from hundreds of residential and commercial projects, helping you avoid common mistakes and achieve long-lasting results.
You’ll learn how to estimate wallpaper accurately, prepare walls correctly, choose the right installation method, troubleshoot common problems, and know when professional installation is worth considering.
Before opening your first wallpaper roll, take a few minutes to prepare properly. A simple checklist can prevent expensive mistakes later in the project.
✅ Measure every wall carefully.
✅ Order all wallpaper rolls from the same production batch (run/lot).
✅ Purchase an additional 10–15% for trimming and pattern matching.
✅ Inspect walls for cracks, loose paint, and moisture.
✅ Remove old wallpaper completely whenever possible.
✅ Prime the surface using the appropriate primer.
✅ Prepare all necessary tools before mixing adhesive.
Professional Tip
Taking an extra hour to prepare the room can save several hours of corrections later. Most installation issues are caused by inadequate wall preparation rather than the wallpaper itself.
Choosing the right wallpaper begins long before installation. Accurate measurements, proper material selection, and understanding pattern repeat can significantly reduce waste while ensuring a smoother installation process.
Before purchasing wallpaper and adhesive, measure the wall height and perimeter, inspect the surface under both natural and artificial light, and check for uneven areas or remnants of previous wall coverings.
Selecting the correct wallpaper material is just as important as choosing the design.
If you’re unsure which material best suits your project, explore our Guide to Different Types of Wallpaper before making your final decision.
Pattern repeat directly affects both material usage and installation complexity.
Large repeating patterns require additional trimming to align each strip correctly, increasing overall wallpaper consumption. Offset patterns also require extra planning and generate more waste than straight-match designs.
Always check the manufacturer’s specifications before ordering materials.
One of the most common DIY mistakes is ordering the exact number of wallpaper rolls required.
Professional installers typically recommend purchasing 10–15% extra for standard wallpapers and even more for large repeating patterns or rooms with multiple windows, doors, and architectural details.
Ordering everything at once also helps ensure every roll comes from the same production batch, reducing the risk of slight color differences.
Before hanging the first strip, take a moment to evaluate the room carefully. These three questions help prevent many of the installation problems homeowners experience later.
A pro will arrive at a convenient time, prep the surface, and install any wallpaper without bubbles or unnecessary waste—get a free estimate.
Lighting has a major impact on how wallpaper seams appear.
Side lighting from large windows, wall sconces, or recessed ceiling lights can make even perfectly installed seams more noticeable.
Whenever possible, plan seam placement behind furniture, near corners, or in areas that receive less direct light.
Professional Tip
Walk through the room with both daylight and artificial lighting before installation. This simple step often reveals uneven walls and helps you identify the best starting point for hanging wallpaper.
Many homeowners assume their walls are perfectly straight until installation begins.
Use a long level or straightedge to check for bows, depressions, or high spots before applying primer. Minor imperfections usually aren’t a problem, but larger uneven areas should be repaired before installation.
Proper wall preparation improves adhesion and produces cleaner seams.
Installing new wallpaper over an old layer almost always creates problems later.
Old wallpaper may already have weakened adhesive, hidden damage, or trapped moisture that reduces the lifespan of the new installation.
Whenever possible, remove wallpaper completely, repair any imperfections, apply primer, and begin with a clean surface.
Even the highest-quality wallpaper won’t look its best if it’s applied to a poorly prepared surface. In our experience, most installation problems—including lifting seams, bubbles, and visible imperfections—are caused by inadequate wall preparation rather than the wallpaper itself.
Spending time on preparation helps ensure better adhesion, cleaner seams, and a longer-lasting finish.
Before applying primer, remove dust, dirt, grease, and any loose paint from the wall surface. This step is especially important in kitchens, laundry rooms, and areas near radiators where grease and residue can reduce adhesive performance.
Allow the surface to dry completely before moving to the next stage.
Best Practice
Small cracks, nail holes, dents, and raised areas should be repaired before hanging wallpaper.
Apply filler or joint compound where needed, allow it to dry completely, then sand the repaired areas until smooth. Large imperfections should always be corrected before installation to prevent visible bumps beneath the wallpaper.
Professional Tip
Wallpaper hides small cosmetic imperfections—but it won’t hide uneven walls or poor preparation.
Primer helps regulate wall absorbency, improves adhesive performance, and makes future wallpaper removal much easier.
Choose the primer according to your wall type:
| Wall Surface | Recommended Primer |
| Fresh drywall | Drywall primer |
| Previously painted walls | Acrylic primer |
| Porous plaster | Deep-penetrating primer |
| Smooth repaired walls | Universal acrylic primer |
Many installation problems begin with the very first strip.
Use a laser level or plumb line to establish a perfectly vertical reference before hanging wallpaper. Even a slight deviation at the beginning can become increasingly noticeable across the room.
If you’re working with large patterns or murals, plan the layout before applying adhesive to minimize visible seams and unnecessary trimming.
Professional installers often draw a second control line two or three strips away from the starting point.
This simple technique helps identify minor deviations early, allowing adjustments before they become noticeable across the entire wall.
Our Main Services
Residential Wallpaper
Installation
Commercial Wallpaper
Installation
Wallpaper Removal
Services
Avoid these common mistakes before installing wallpaper:
❌ Hanging wallpaper over old wallpaper.
❌ Skipping primer.
❌ Ignoring uneven walls.
❌ Starting from an unverified vertical line.
❌ Installing wallpaper on damp surfaces.
Correcting these issues before installation can save hours of work and significantly improve the final appearance.
Having the right tools makes wallpaper installation faster, easier, and more accurate. Fortunately, you don’t need an expensive professional kit—just a few reliable essentials.
| Tool | Required | Purpose |
| Laser level or plumb bob | ✅ | Keeps strips perfectly vertical |
| Utility knife with spare blades | ✅ | Clean trimming |
| Putty knife | ✅ | Smoothing and trimming |
| Seam roller | ✅ | Pressing seams |
| Paste brush or roller | ✅ | Even adhesive application |
| Measuring tape | ✅ | Accurate measurements |
| Microfiber cloth | ✅ | Removing excess paste |
| Wallpaper smoothing brush | Optional | Delicate materials |
Save Your Money
Many expensive wallpaper installation gadgets provide little benefit. A sharp knife, quality straightedge, seam roller, and laser level will handle nearly every residential wallpaper project.
Accurate trimming plays a major role in achieving a professional-looking finish.
Replace utility knife blades frequently—dull blades tear wallpaper instead of producing clean cuts. Many installers change blades after every two or three strips, especially when working with heavier materials.
Whenever possible, trim wallpaper against a metal straightedge or putty knife rather than cutting freehand.
For crisp edges, press wallpaper firmly into the ceiling line or baseboard before trimming with a sharp blade.
Allow a slight overlap behind moldings whenever possible to help conceal cut edges and create a cleaner finish.
Always switch off electrical power before working around outlets or switches.
Install wallpaper over the opening first, then make a small X-shaped cut, trim the excess, and fold the edges neatly beneath the cover plate.
Corners are among the most challenging parts of wallpaper installation.
Rather than forcing wallpaper deep into an inside corner, wrap it approximately 5–10 mm around the edge before trimming and applying the next strip.
Outside corners require the same approach but demand extra attention when pressing edges to prevent lifting over time.
Professional Tip
Never rely on corners being perfectly square. Always use your plumb line instead of following the corner itself.
Different wallpaper materials require different installation techniques. Understanding which method your wallpaper uses helps prevent lifting seams, bubbles, and unnecessary material waste.
Although each wallpaper type has its own installation process, three basic rules always apply:
Traditional wallpaper requires adhesive to be applied directly to each wallpaper strip before installation.
Allow the adhesive enough time to soak into the paper according to the manufacturer’s recommendations. Hanging wallpaper too early may cause stretching, while leaving adhesive on too long can reduce bonding strength.
Best Practices
Paste-the-wall wallpaper has become increasingly popular because it’s quicker to install and easier to reposition during installation.
Instead of applying adhesive to the wallpaper, paste is rolled directly onto the wall before hanging dry wallpaper strips.
Advantages
Professional Tip
Apply adhesive evenly from ceiling to floor without leaving dry areas. Uneven glue coverage is one of the most common causes of lifting seams after installation.
Peel-and-stick wallpaper is an excellent choice for temporary décor, rental properties, and DIY enthusiasts. However, despite its simplicity, surface preparation is even more important than with traditional wallpaper.
Before Installation
Even small amounts of dust can significantly reduce adhesion.
If you’re considering peel-and-stick wallpaper, our Guide to Different Types of Wallpaper explains when this option works best compared to traditional vinyl and non-woven wallpapers.
| Wallpaper Type | Adhesive | Installation Difficulty | DIY Friendly |
| Unpasted | Applied to wallpaper | ⭐⭐⭐⭐☆ | Moderate |
| Paste-the-Wall | Applied to wall | ⭐⭐☆☆☆ | Easy |
| Peel-and-Stick | Self-adhesive | ⭐☆☆☆☆ | Very Easy |
Even experienced DIY installers lose time in predictable areas. Planning ahead helps avoid delays and unnecessary material waste.
Large repeating patterns require additional trimming and careful alignment. Always calculate extra wallpaper before ordering.
Attempting to compensate for uneven walls during installation almost always creates visible seams and alignment problems.
Preparing the surface properly is much faster than correcting mistakes later.
Wallpaper installation behind radiators, window trim, and decorative moldings takes significantly longer than flat wall sections.
Creating paper templates before cutting wallpaper often saves both time and material.
Inside and outside corners require patience and careful trimming. Trying to force wallpaper around uneven corners usually leads to wrinkles or lifting edges.
Wallpapering ceilings is considerably more challenging than walls and usually requires two people for accurate alignment and safe installation.
Even with careful preparation, small issues can occur during installation. Fortunately, most problems can be corrected if addressed quickly.
| Problem | Possible Cause | Recommended Solution |
| Seam opened | Uneven adhesive or dry edges | Lift carefully, apply fresh adhesive, roll the seam |
| Air bubbles | Trapped air or insufficient smoothing | Smooth toward the edges or inject adhesive if necessary |
| Pattern drift | Incorrect starting line | Re-align early or disguise using trim if discovered later |
| White edges on dark wallpaper | Factory-cut edges visible | Color the edges before installation using a matching wallpaper pencil |
| Waves | Excess adhesive or uneven wall | Allow drying first; if necessary, remove and reinstall after correcting the surface |
Some wallpaper projects are significantly more difficult than others. While many homeowners successfully install wallpaper themselves, certain situations often require professional experience.
Consider hiring a professional if your project includes:
Professional installation helps minimize material waste, ensures precise pattern alignment, and often saves both time and money on complex projects.
In most cases, yes. Removing old wallpaper provides a clean, stable surface for proper adhesion and allows you to identify hidden issues such as cracks or moisture damage before installation.
Generally, no. Textured paint prevents proper adhesion and allows imperfections to show through the wallpaper. Smooth, primed walls always produce the best results.
Whenever possible, purchase additional wallpaper from the same production batch before starting the project. If matching rolls are unavailable, use any replacement material on less visible walls or consider creating an intentional feature wall using a coordinating design.
Most professional installers recommend ordering 10–15% extra for standard rooms. Projects with large repeating patterns, multiple windows, or complex layouts may require additional material
Yes, many homeowners successfully install wallpaper themselves, especially peel-and-stick or paste-the-wall products. However, murals, ceilings, textured materials, and large patterned wallpapers often require professional installation for the best results.
Successful wallpaper installation begins long before the first strip is applied. Careful planning, proper wall preparation, the right tools, and patience throughout the installation process all contribute to a professional-looking finish that lasts for years.
Whether you’re tackling a DIY project or planning a full renovation, taking the time to prepare properly will help reduce waste, improve durability, and achieve cleaner results.
If you’d rather leave the installation to experienced professionals, explore our Residential Wallpaper Installation, Wallpaper Removal Services, and Portfolio pages to learn more about how we can help with your next project.
Commercial Wallpaper Installation Cost: What Businesses Should Expect Commercial wallpaper installation costs are rarely based on square footage alone. The final price reflects the condition of the walls, the type...
Choosing a wall finish for a commercial space is not only a design decision. Offices, hotels, restaurants, retail stores, and other business interiors need surfaces that can handle daily use,...
Designing a nursery is about much more than choosing a beautiful wallpaper. The right wallcovering creates a calm environment for sleep, supports your child’s development, and remains stylish as your...
Questions about wallpaper installation pricing, assessing the time frame for the project, or anything else? We will guide you from start to finish so you know what to expect every step of the way. Feel free to leave a request, and our representative will call you back within 15 minutes.
Email us at info@bestwallpaperinstaller.com or call (469) 757-2788!
Our working hours are: