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Wallpaper School

Don’t get stuck, take part in our Wallpaper School before you install your wallpaper. Here is some information that is good to know before, during and after the installation of your new beauty. If you need a step-by-step guide on how to install wallpaper, click here.

How do I prepare the wall before installing my wallpaper?

  • Plaster and chipboard are a strong base and needs to be primed with priming colour. If not primed, this kind of material may suck water from the adhesive.
  • Fibreglass fabric or other fabric should be wide packed and pre-glued before in-stallation of wallpaper.
  • Wallpaper with texture (seagrass, vinyl or textile wallpaper) needs to strip off before the installation of wallpaper.
  • Painted surface, especially shiny colours should be washed with paint wash and rinsed with water before installation. Don’t forget to let the wall dry before installing your wallpaper.
  • Surfaces of high contrast need to be primed, otherwise, pattern and/or colour may shine through the new wallpaper.

What tools do I need?

You need a roller, utility knife and spare blades, paint tray, spirit level/ (plummet of scissor and twine), pencil, soft sponge, spatula, a container with clean water, wallpaper brush, steel ruler, paintbrush and adhesive.

Which adhesive should I choose?

We recommend a non-woven wallpaper paste (adhesive). Do not use so-called combi-nation glue.

What happens if I spill adhesive on the front of the wallpaper?

Wipe immediately with a wet sponge. Do not rub, instead use plenty of water. If the sponge is dry, it will grind of details from the print.

My wallpaper is flamelike, what can I do?

Newly installed wallpaper may appear patchy and flamelike. It is therefore important to not isolate the wallpaper. Open doors and windows (if the weather allows) and air the room. The room should keep at least 18+ Celsius.

Why do edging, blistering and gaps appear?

These common problems are often based on a faulty surface, the wrong amount of ad-hesive or technic.

How do I install wallpaper around sockets and doors?

Installing wallpaper around sockets and doors sounds harder than it is. Below is a col-lection of step-by-step guides for the mentioned process. Don’t forget to believe in yourself, good luck!

Electrical sockets and switches:

1. Firstly, turn off the power. Then remove the cover caps from the electrical out-let/switch on the wall.

2. Then hang your wallpaper as you usually do. When you are done, use a scissor or a knife to remove the wallpaper that covers the hole. Keep track of how much the cover cap hides. If too much wallpaper is removed, a gap will occur between the cover and the wallpaper.

3. Refit the cover caps. Tada! Ready to use.

Doors and windows:

1. Apply the adhesive where the strip is supposed to be. Use a brush around edges, corners and door/window frames. Hang the strip of wallpaper as usual and align the pattern with the previous strip.

2. Feel with your fingers and mark the top corner of the window/door. Lift the part of the wallpaper that ends up over the window/door. Make an incision from the top of the corner moving diagonally downwards towards the edge of the strip.

3. Press the wallpaper down against the upper edge of the window/door frame and cut the top edge off. Use a spatula or steel ruler to push down the edge, then cut off the top edge. Remember to use a knife with a sharp blade for clean edges.

4. Repeat the same procedure on both sides. Make sure to drag the knife from the bottom and upwards, so the wallpaper won’t break.

5. It is important to change the blade on the knife often, the knife should be sharp at all times. Don’t forget to wipe off any glue residue on the knife with a wet sponge or cloth.

Outside corners:

1. Hang the wallpaper, as usual, make sure that the patterned is aligned to the previous strip. Mark the bottom and then cut it off. Remember to have a margin of at least 10 cm.

2. Measure the distance from the edge of the previous strip to the corner. Add about 2 cm.

3. Cut a piece lengthwise from the trimmed strip of wallpaper equal in width to the distance from the edge of the previous strip to the corner + 2 cm (cut on the left-hand side if you are installing your wallpaper towards the right and on the right-hand side if you are installing your wallpaper towards the left way). Leave the excess at the top and bottom.

4. Apply adhesive to the wall and corner where the wallpaper is going to be placed. Use a paintbrush where the roller can’t reach. Align the pattern of the trimmed strip and make a small incision at the corner, top and bottom right on the corner so that you easily can wrap and attach the strap around the corner. Use your fingers and wallpaper tool to get the strip in place and remove any possible air bubbles.

5. Mark a new vertical line using a spirit level or plummet, just as you did at the beginning. The line should be drawn so it is visible just beside the outer edge of the part on the strip you are about to hang. Apply adhesive with a brush to the top of the first piece of the strip, this one will overlap. Then apply the adhesive with the roller to the rest of the wall.

6. Now, use the remaining piece of the trimmed strip and place it next to the previous piece, these should overlap about 1-1,5 cm. Solder the strip against your drawn line.

7. Place the strip roughly 5 mm in from the corner. If you don’t do this, there is a risk that it will tear as you go towards the corner. Align the pattern as well as possible against the previous piece of the strip (you can compromise here slightly due to the overlap).

8. Cut off excess wallpaper at the bottom and top. Wipe off any glue residue with a wet soft sponge or cloth. Tada! Now it's just to continue, as usual, strip by strip.


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Frequently asked questions

What measurements are Perswall wallpaper?

Each roll of wallpaper is 45 cm wide. The length and height depend on the measurements you indicate when placing an order.

What material is your product made of and what quality does it have?

Perswall wallpaper is digitally printed on high-quality, non-woven FSC- certified paper. Our digitally printed wallpaper offers a flexible material that makes interior dreams come true, without compromising on quality or the environment.

Upload design

Will my order be reviewed before printed?

Every custom order with manually be reviewed by our graphic designers to ensure best printing quality and will contact you in case there are any problems.

What will happen to my uploaded image after production?

We will save your file for 6 months. Should your wallpaper be damaged in transport or during installation we can easily produce another one. Your file will be deleted when the 6 months have passed.


What payment solutions do you offer?

We offer card payment via Adyen.


When do I receive my order confirmation?

You should receive your order confirmation within 24 hours of the order being placed. If you haven’t received your order confirmation within this time, please contact our customer service at

Can I change my order?

Since all our products are printed on-demand, with specific measurements and requirements, you won’t be able to alternate or change your order when gone into printing. If you wish to make any changes to your order, contact our customer service asap. There might be a small possibility that your order has not gone into printing yet which means that it still can be alternated. Contact customer service at


How much is delivery?

We love the fact that you chose us to tell your unique story, therefore we offer free shipping worldwide.

The cost excludes import taxes which depend on your country.

What happens if my product is injured when delivered?

We replace faulty items with a fault-free corresponding item. We need to see the error to do so. Perswall does not take responsibility for any accidents or mistakes that occur when installing wallpaper. Neither do we take responsibility for any costs from loss of time or other indirect or consequential costs. It is therefore crucial that you examine your order before installing it.

Easy how to hang guide

You need:

A roller, utility knife and spare blades, paint tray, spirit level/plummet (scissor and twine), pencil, soft sponge, spatula, a container with clean water, wallpaper brush, steel ruler, paintbrush and adhesive.

1. Before installation

A thoroughly prepared surface is crucial to the result. Therefore the wall should be dry, smooth, and well anchored. In our Wallpaper school, you can read more about how to prepare different surfaces.

Roll out your wallpaper on a clean table and cut off each strip on the scissor markings. Every other strip is upside down and needs to be flipped around to the right way. All strips have text on top, to ease the installation process and direction. Always use a non-woven adhesive (paste), avoid so-called combination glue.

2. Use a spirit level

Create a plum line with your plummet (scissor + twine) or a spirit level. Draw guidelines on the surface for an easier installation

3. Cover the whole area with adhesive

Apply adhesive on the wall equal to approximately the width of 2-3 strips (90-135 cm). It’s important to cover the whole area with adhesive to avoid any bare spots. A spot without glue becomes an air bubble under the wallpaper. Carefully apply an even layer of adhesive, use a paintbrush where the roller can’t reach.

4. Watch out for creases!

Follow the instructions on the top and bottom of the strip. Look what is up and down, carefully wrap the strip in the middle, make sure to not create any creases. Have the pattern on the inside of the wrap when you attach it to the wall, this to avoid staining the front with adhesive. Attach the top of the strip at the right height and in the right position before you let go of the wrap and let it fall.

5. If it goes wrong start over!

Examine the strip at the top and bottom before you press it against the wall. Never try to twist the strip into the right position when in the wrong position. Instead, loosen the strip and start over. Apply more adhesive if the previous layer is dry. If paste accidentally would end up on the front of the wallpaper, do not rub. Instead, use a soft sponge with water to wipe the adhesive away. A dry sponge may chafe on the print and destroy the wallpaper.

6. Use a wallpaper spatula

Use the wallpaper spatula to even out the surface and get rid of glue and air bubbles under the wallpaper. Remember to keep your tools clean at all times by continuously wiping them off to get glue and other residues off. Use the wallpaper tool in a sweeping motion starting from the ceiling to the floor, and from the middle outwards.

7. Be meticulous!

Continue with the next strip and align the pattern. Make sure that the strips are tightly joint so no underlying surface is visible in between. The adhesive must be applied out to the edges so the strips attach properly.

8. Change the blade often

Cut off everything that doesn’t belong to the wallpaper itself. Feel free to use a steel ruler or putty shovel as support when doing this. Don’t forget to change the blade on the knife often, a dull blade can easily rip and break the wallpaper.

9. Repeat

Now continue, strip by strip, until the wall is finished. Have in mind to avoid isolation of the room. If the weather allows, open up and let the room ventilate until the adhesive is dry