1. Not measuring correctly

One of the biggest mistakes people make is not measuring their walls accurately before ordering wallpaper.

So, before you add a few rolls of wallpaper to your cart, double check all the measurements. You'll thank yourself later.

It's important to know the dimensions of the area you want to cover so you can buy enough material. Also, you need to take into account any trimmed edges or repeats of the pattern when measuring.

2. Not using the right tools

Wing mounting can be tempting, but before installing wallpaper, make sure you have all the necessary tools available.

You will need a sharp knife, a straightedge, and a damp sponge.

If you are not using self-adhesive wallpaper, then you will also need a good quality wallpaper paste.

Use a seam roller to smooth out any bubbles or wrinkles and be careful not to cut into the wall itself when trimming the edges of the wallpaper.

3. Forgetting to pre-treat the wall

Taking the time to pre-treat the wall before applying wallpaper means that the paper will stick together smoothly. Doing so will also make installation easier.

Make sure the surface is clean and that any nails have been removed. Otherwise, this could lead to bubbles, wrinkles or other defects in the wallpaper.

After filling any nail holes and sanding any bumps, wipe down the wall with a mixture of water and cleaning vinegar. If you are hanging a non-self-adhesive wallpaper, apply a coat of primer. Then, wipe the wall again with a damp cloth.

4. Not sealing wallpaper joints

Pay extra attention to the edges of your wallpaper to make sure your work holds up, literally.

Not sealing the seams between wallpaper properly can result in broken seams or an unsightly look.

5. Ignore hanging instructions

As with any DIY home project, it's important to read the instructions carefully.

While there are common instructional symbols, there may also be manufacturer specific instructions.

For example, there are certain wallpaper types that you will need to paste wallpaper or walls. Some textured wallpapers may require specific glues.

Special instructions may also extend to wallpaper maintenance and cleaning.

There are indication symbols to show which wallpapers are washable, scrubbable and can be sponged.

6. No shrinkage allowed

Little known fact: It is very common for wallpaper to shrink when drying, especially if it has not been applied correctly. This can be due to a number of reasons, including over-stretching, poor adhesion, or even temperature and humidity.

Most types of wallpaper will shrink somewhat after being put up.

The best way to prevent shrinkage is to be extra careful when applying wallpaper. The more you overwork it by stretching it, pulling it up and re-pasting it, the more likely it is to shrink.

If you do notice significant shrinkage, you can carefully remove the panel and reattach it.