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How to prep a wall for wallpaper


How To Prepare Your Wall For Wallpaper • Milton & King

Smooth

The first thing you will want to do to prepare your wall is make sure it is smooth. Start by removing any hooks, nails and light switch plates. This will invariably leave holes and raised areas where these items were. Any bumps or craters in your wall may be visible through the wallpaper and could affect the way the print looks. Prepare your wall by filling in any holes or craters with spackle and sanding any bumps. You will be left with a smooth and even surface. Most of the time a light texture isn’t a problem, but deep textures in your walls should be smoothed. A smooth wall will ensure that every inch of wallpaper surface area is being held against the wall. This will help prevent issues of lifting over time as well as eradicate hiding areas for moisture which can lead to mold.

Wallpaper with a white background or very light colors can sometimes reveal the wall’s texture through the paper. Darker colors tend to cover up any imperfections. You can see here, Traci Sheppard from Phoenix And The Ocean testing a sample of the Huddy’s Dots design. In this case, she is wallpapering over a painted concrete wall, not the easiest thing to smooth. If you look closely, you can see the texture peeking through. Fortunately, it wasn’t enough of a problem to discourage her from moving forward with her wallpaper plans.

Your wallpaper will have its best look on a flat wall. You can prepare your wall for wallpaper by a process called mudding. This is where you apply a skim coat of joint compound to your wall. Once you smooth it onto your wall, you allow it to dry and sand it smooth and then apply a primer. You can learn more about textured walls and what to do about them by visiting our blog called Textured Walls: Are They A Problem For Wallpaper.

Clean

The second step will be to clean your wall. This step should not only happen now, but also again right before installation. After you have sanded your wall, there may be all sorts of small dust particles that you don’t want to paint over nor install over. It is recommended that on the first pass, you use a strong cleaner like sugar soap or TSP (trisodium phosphate) to get rid of grease and other build up. If you already have paint on the wall, then using a solution of hot water with a small amount of vinegar will do the trick. Then, you’ll also want to revisit this cleaning step with just a soft wet cloth around 24 to 48 hours before you install your wallpaper. Thanks to Bud from White Sparrow Farm, we can see just how it’s done.

Paint & Primer

Paint can be a problem. The presence of and the lack thereof. Eggshell, satin, or semi-gloss paints seem to do best with wallpaper. You don’t want to apply wallpaper to a latex paint as it will likely tear when you want to remove the wallpaper. You also don’t want to install any wallpaper directly to drywall. For paste-the-wall wallpaper, the drywall can soak up the paste not leaving much for the paper. It is best to apply a primer to seal the wall before applying the paste. This also stops moisture from absorbing into the wall preventing the growth of mold and fungus.

Primers will usually come in white. This is fine if you are using a light colored design. Milton & King wallpaper is a butt-join wallpaper.  This means the seams of two joining wallpaper strips will go right up against each other. There is no need for overlap and there should be no expanding or contacting of the wallpaper in a stable environment. However, unless you do a perfect install, (and let’s face it, how many of us are perfect?), it’s always a good idea to paint or primer the wall in a color that is similar to your wallpaper. Having a white wall underneath your darkly colored wallpaper creates the risk of seeing white seams between strips of wallpaper. You can avoid this by having the person at the hardware store tint your primer in a similar color to your wallpaper.

If you are applying wallpaper to a freshly painted wall, it can take some paints up to 30 days to fully set. So you will want to make sure you wait a month before applying wallpaper to a newly painted wall. Primer, however, dries very quickly and you will only need to wait a day or so.

Moisture

Side Note: Can I put wallpaper in a bathroom? I have seen this question asked many times. Nobody’s bathroom is the same. And when you say bathroom, do you mean a room with a toilet? Or a room with a shower? These details will determine much about whether the wallpaper will have trouble adhering to your walls and will also indicate how you can prepare your wall so that it is suitable for wallpaper.

The non-woven aspect of the wallpaper means that it is breathable, making it suitable for normal humid environments. So, your wallpaper will work but is not meant to come into direct contact with water. If the wallpaper does get wet, you will want to immediately wipe it down with a soft-cloth. Any sitting water will eventually soak through, weakening the paste underneath and causing the wallpaper to lift over time. If your bathroom is a more extreme environment, like if the walls tend to get soaked with water, you can take steps to waterproof your wallpaper. Read more about that on our blog How To Waterproof Your Wallpaper. However, keep in mind that once you waterproof your wallpaper, it is no longer breathable or nor easily removed. In that case, you’ll also want to use a mold/mildew inhibiting paste like Roman Pro-543. Under normal circumstances though, as long as the door stays open and there is ventilation, installing wallpaper in the bathroom is fine.

So Let’s Recap how to prepare your wall for wallpaper

  1. Smooth the wall. Fill holes and “mud” over texture and sand any bumps.
  2. Clean your wall. For best results use sugar soap or hot water with cleaning vinegar.
  3. Apply primer to seal the wall.  (If painting, use an eggshell, satin or semi-gloss paint).
  4. Wipe down your wall with a damp cloth 24 hours prior to installing.
  5. Install your wallpaper and make your interior dreams come true.

Knowing how to prepare your wall for wallpaper is important to make sure that you get your money’s worth out of your purchase. The more precautions you take beforehand, the more bulletproof you will be against all the things that can go wrong. So when you get the opportunity to buy your dream wallpaper, prepare your walls first, and luck will follow.

How to Prepare Walls for Wallpaper

ROMAN Products’ line of wallcovering adhesives, primers, and removers have been carefully designed to make the wallpaper installation process easy.

Even so, the process is a little more complicated than some homeowners realize. There is a certain amount of preparation that must be done before you begin hanging your wallpaper. The most important part of this is to get the wall in suitable condition.

Failure to prepare your wall correctly can result in serious issues with your installation. In some cases, these issues do not become apparent until months or years after the wallpaper has been set in place. That’s why the ideal approach is to take the time and effort to prepare your wall—it can save a lot of trouble down the road.

Is it hard to learn how to prep a wall for wallpaper? Not really—but some walls are more difficult than others. The complexity of the task depends on the type of wall you have and what it looks like in its present state.

To help you prepare your wall, we’ve put together a brief overview of the steps you need to take to ensure a successful wallpaper installation.

1. Smooth the Wall

You need to remove anything on the wall that keeps it from being continuously smooth, such as old nails and flaky paint. This also includes taking off any light switch plates and outlet covers. You should be able to remove these with a screwdriver, but it’s advisable to shut off all the power to the room first to avoid a possible shock.

Once you have removed all the removable objects, you probably still have more work to do in order to smooth out what remains before you can apply wallpaper. Don’t expect your wallpaper to be able to hide blemishes such as small holes in the wall.

Use sandpaper on uneven surfaces to reduce bumps and similar flaws. Vinyl spackling paste is helpful for filling any gaps; it usually takes one or two hours to dry.

What if you have existing wallpaper already in place? The best strategy is to remove it, rather than applying your new wallpaper over it. Leaving the old wallpaper, especially if it’s in subpar condition, can interfere with the installation of the new wallpaper. But even if the old wallpaper is in good shape, it might show through the new design you have chosen for your wall.

Be careful when removing old wallpaper, though—you could harm the drywall. For best results, use one of ROMAN Products’ wallpaper removers. You may also wish to have a scraper on hand for particularly troublesome areas.

What if you have a textured wall? Hanging wallpaper on these kinds of walls can not only lead to unsightly bumps, it can also create tiny pockets that can harbor mold. There are several ways to smooth textured walls for wallpaper. You can try smoothing it out by applying a coat of joint compound (a.k.a. drywall mud). Another tactic is to apply lining paper.

2. Wash the Wall

Before you go any further with the installation process, you should make the wall as clean as you can. If you’ve been sanding the wall, it’s likely you’ve left behind a coat of dust that needs to be removed. Aside from that, there’s probably dirt and other spots that need to be dealt with.

A combination of warm water and vinegar with a cloth or sponge is usually all you need to create the clean surface you want. Some people first run a vacuum over the wall to aid in removing dust particles. Whatever you do, be sure that the wall is totally dry before you proceed to the next step.

3. Apply a Primer

Now you should apply a primer to the wall to help with your wallpaper installation. It’s important to ensure that you have a primer that is formulated for the type of wall you have. For instance, wood paneling will call for a wallpaper primer different from what you’d use on plaster walls. At ROMAN Products, you can find the best primer for textured walls, painted walls, or virtually any other type of surface.

Is wallpaper primer necessary? It’s certainly very helpful. Primer creates a barrier between the wallpaper and the wall itself, which helps with the installation process, and also reduces the likelihood of causing harm to the wall due to the adhesive seeping through. Lastly, primer makes it much easier to remove the wallpaper when it eventually comes time to do this.

Before you begin applying the primer, however, it is important to test the surface for compatibility. You can do this by applying a little bit of primer to a small, out-of-the-way area of the wall. Come back 24 hours later to see if there’s anything wrong with the primer. If everything looks fine, you can proceed with the primer.

Once the primer has been fully applied with a brush or roller, you should remove any excess coating from the wall. Use clean water to avoid contamination. It’s also a good idea to wash your brushes and rollers immediately afterward with warm water and a mild soap.

Always follow the directions provided by the manufacturer when applying a primer. It is recommended that you allow ROMAN Products’ primers to sit for 24 hours after application to dry entirely.

4.  Wash the Wall Again

Why? It’s vital to make sure that your wall is as clean as possible prior to installation. Remember that your wallpaper will be attached directly to the primer. Anything less than a spotless surface can impair the ability of your wallpaper to adhere properly.

When washing the wall this time around, it’s best to use a common non-abrasive cleaner with a cloth or sponge. There should be no need for more powerful chemicals. This step should be completed 24 hours before hanging your wallpaper.

5.  Hang the Wallpaper

Once 24 hours have passed and the wall is completely dry, you can install your wallpaper. You have successfully performed all the steps necessary to prepare your wall for this procedure.

Of course, you should gather all the proper materials before you begin. This includes the correct wallpaper adhesive. You can find what you need in ROMAN Products’ line of high-quality wallcovering adhesives.

Preparing walls for wallpapering

Preparing walls for wallpapering is not an easy task, but it can be done, even without the help of professionals. To make the process not so time-consuming, some rules should be taken into account before starting work.

One of the main conditions is the creation of a working space. It is necessary to free up more space, protect the floor from pollution with a film. To avoid drafts, it is recommended to close the room. It is also desirable to maintain the temperature in the room at +18…+20°C. In addition, you may need the following tools and supplies:

Tools Materials
  • Spatulas
  • Roller
  • Brush
  • Sandpaper
  • Plaster
  • Putty
  • Primer
  • Film, masking tape

Wall preparation steps for wallpapering

1.

Removing wallpaper

In order for the new coating to serve you faithfully for many years, the wall must be thoroughly cleaned. Practical advice from our masters will help to cope with this, you will find them in the article “How to quickly remove old wallpaper”.

What to do with stains? After removing the wallpaper, look for spots. Determine their nature, and then determine how to eliminate them. Black-gray stains from fungus and mold can be removed by repeated application of a deep-penetrating primer. Their appearance may be caused by poor-quality waterproofing or a facade that is not well protected from external influences.

Use a special antibacterial fungicide to clean and kill bacteria, fungus, algae, moss and lichen from wall surfaces. The fast-acting composition will not only remove stains, but also help prevent their occurrence in the future.

Code: 515000123

Antifungal agent Ceresit CT 99 1 l

Code: 700000505

PROSEPT mold remover 500 ml

2.

Priming

After cleaning the surface, the walls are primed. The solution is applied with a roller, the corners are treated with a brush. The purpose of the primary treatment is to disinfect the walls, clean the base from small debris, and also prevent the absorption of moisture. Strengthens the surface layer, evens out the absorbency of the base for better adhesion to plaster mixtures. When choosing a soil mixture, be guided by the properties of the surface. You can choose the right primer in the catalog of our online store by reading the product description, or with the help of a sales assistant in a hypermarket.

Code: 515001216

Primer-concentrate deep penetration Ceresit CT 17 Concentrate 1 l

Code: 5116

Deep penetration primer Ceresit CT 17 PRO 10 l

3. Troubleshooting

If there are holes, cracks, holes from screws or nails on the wall surface, they must be repaired. Stucco will help to cope with irregularities greater than 1 cm. Fill the cracks with the mixture, level the surface with a spatula, after drying, sand it with sandpaper. If the scratches are small, they can be puttied at the stage of leveling the walls. This item can also be skipped if the wall to be glued is dry, without bumps.

Code: 511050191

Cement plaster and repair putty Ceresit CT 29, 5 kg

Code: 511001209

Light cement plaster Ceresit CT 24 Light 20 kg

4. Surface leveling

Dilute the putty, level all surfaces with a mixture and a spatula. Wait for it to dry, sand the surface until smooth with sandpaper.

Code: 5988

Polymer putty Knauf-Polymer Finish 20 kg

Code: 515000894

Finishing putty Knauf-Rotband Paste Profi 18 kg

5. Reprimer

Provides good adhesion of wallpaper to the surface. The primer solution, when applied to the wall, forms a protective film, has an antiseptic and disinfecting effect.

Please note: work on preparing the walls for wallpapering is carried out strictly in the above sequence. It is not recommended to swap stages, since the result of the work depends on it.

Code: 515001123

Universal primer Ceresit IN 10 Interior 5 l

Code: 515001124

Universal primer Ceresit IN 10 Interior 10 l

Specifics for preparing different types of walls

Gypsum board - puttied with a thin layer, paying special attention to the joints. Puttying is necessary so that in the future there will be no difficulties with replacing the wallpaper. It will be extremely difficult to remove wallpaper from an unprepared cardboard surface without damaging it.

Concrete and brick - the problem of processing such surfaces is the unevenness and dark color of the base. Help out plaster and applying several layers of putty. After that, sand the surface and treat with a primer solution.

OSB and chipboard boards - the preparation of this type of base is similar to the method described above. The main difference is that a special type of putty is used to level such walls.

When preparing walls in new buildings, the primer is applied in several layers, and the plaster is applied together with the mesh in order to prevent cracks in the future.

Please note: At the end of the wall preparation, it is worth removing all the pencil marks that were made at the preliminary stage of work. If you skip this step, then the arrows and inscriptions may be visible under light wallpaper.

As a result, the walls should be even and uniform in color. Once you are convinced that you have achieved this particular effect, you can glue the wallpaper. If you have questions about this step, take a look at our advice.

Now you know how to make your new wallpaper hold up well and be pleasing to the eye. Read more about their types, design and features of choice in our article.

And you can see your new interior using 3D visualization on our website.


Preparing the walls for wallpaper - 3 stages, which you can't do without

Previously, all wallpaper was glued to the newspaper, only with an overlap. Today, the pasting process is simpler, but requires preliminary surface preparation - cleaning, leveling, priming. How to carry out all the work, what materials are needed? Let's figure it out.

Contents:

  1. Is it necessary to prepare the walls for wallpaper?
  2. Wall preparation steps
    1. Removing the old finish
    2. Plaster
    3. Finish primer

Is it necessary to prepare the walls for wallpaper?

Have you also asked this question? After all, I don’t want to turn the replacement of the finish into a major overhaul, but you never know what surprises are hidden under the old coating. But any neglect at the preparation stage inevitably leads to a strong deterioration in the quality of the repair. Preparation ensures:

The better prepared the surface, the easier it will be to glue the canvases and the longer they will stay on it

Wallpapering tools

Preparation steps

primer. Depending on the initial state of the walls, their material and type of finish. Let's take a closer look at each of the stages.

Removing the old finish

If the wallpaper is old and peeling off by itself, you can remove it with a spatula. If you can’t peel them off in this way, you need to make small cuts on the canvases, moisten them with warm water using a spray bottle or sponge.

Cleaning the walls from the old coating

Important: do not wet large areas at once, as the moisture dries quickly and by the time you finish a small area, the rest will already dry and you will have to start all over again.

Wallpaper removal with a spray gun

If you have a steam generator in your household, use it on the canvases, then the old coating will be removed without difficulty. You can buy a special liquid for removing wallpaper - it is absorbed very quickly, which compares favorably with water.

Paint removal is more difficult. There are three ways:

  1. Mechanical - beat the paint with a hammer. You can also remove the trim with a drill with a special nozzle, but then there will be a lot of dust.
  2. Chemical - the painted surface is wetted with a special solution, left for 5-7 hours. After this time, the paint soaks and is easily removed.
  3. Thermal - with a building hair dryer. The method is bad because when heated, the paint emits a smell.

Wallpaper removal with a steam generator

Plaster

After removing the old finish, the wall must be cleaned of dust and primed. Then all defects are smeared with a gypsum mixture. The primer at the intermediate stage is needed for better adhesion, if it is neglected, the gypsum mixture after a while can move away from the wall, spoiling the entire repair.

Covering the walls with base putty

After leveling the defects, the entire surface is primed again, then covered with a thin layer of putty (if the layer is thick, it will quickly crack). Finally, the putty layer is carefully polished.

Sanding the walls from the dried layer of putty

Finishing primer

The primer is needed for three reasons:

  • The primed surface will not absorb moisture intensively. So - you need less glue, adhesion will be better.
  • Primer helps to remove dust from the substrate.

    • At this stage, you can use both a ready-made primer (most often universal - acrylic), and wallpaper glue in a liquid consistency.

    Important: not every adhesive is suitable as a primer.

    Learn more