How to wallpaper corners

One reason why you should not wrap a full strip of wallpaper over or around a corner is that often the corners themselves are slightly uneven. This can cause the corner to “curl”. There are of course a number of techniques available for wallpapering corners. Here we will show you one of them.

Outside corners

1.
Start by pulling up a strip of wallpaper in the normal way, so that the pattern aligns with that of the previous strip. Mark the bottom and then trim the strip, leaving a margin of at least 10 cm.

2.
Measure the distance from the edge of the previous strip to the corner. Add roughly 20 mm

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 + 20 mm.  (Cut on the left-hand side if you are wallpapering to the right and on the right-hand side if you are wallpapering to the left.) Leave the excess at the top and bottom.

4.
Apply paste to the wall and corner carefully using a brush and roller. Align the pattern of the trimmed strip and make a small incision at the top and bottom right on the corner so that you can easily wrap and press the strip around the corner.  Use your fingers and the wallpapering tool to press the piece down and remove any air bubbles.

5.
Now mark out a vertical line on the new wall using a spirit level, just as you did when placing the very first strip. Draw this line so that it will be visible just beside the outer edge of the part of the strip that you are about to hang. First use a brush to apply paste to the top of the first piece of the strip – which will overlap –  and then apply paste to the unpapered wall using a roller.

6.
Now take the remaining piece of the trimmed strip and place it next to the previous piece, with an overlap of 10–15 mm. Line the strip up against the line you have drawn.

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.
Wash off excess paste using a wet sponge along the seams, skirting board and cornice.

Inside corners

1.
Start by pulling up a strip of wallpaper in the normal way, so that the pattern aligns with that of the previous strip. Mark the bottom and then trim the strip, leaving a margin of at least 10 cm.

2.
Measure the distance from the edge of the previous strip to the corner. Add roughly 20 mm.

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 + 20 mm.  (Cut on the left-hand side if you are wallpapering to the right and on the right-hand side if you are wallpapering to the left.) Leave the excess at the top and bottom.

4.
Carefully apply paste to the corner using a brush and continue a few cm onto the next wall. Align the pattern and then press the piece around the corner. Use your fingers and the wallpapering tool to press the piece down and remove any air bubbles. It’s best to make a small incision at the top and bottom of the piece right at the corner. This makes it easier to work the wallpaper into the corner by the skirting board and cornice. Cut at the top and bottom.

5.
Now mark out a vertical line on the new wall using a spirit level, just as you did when placing the very first strip. Draw this line so that it will be visible just beside the outer edge of the part of the strip that you are about to hang. First use a brush to apply paste to the front of the piece of strip that has just been hung in the corner. The new piece will overlap with this one. Then apply paste to the unpapered wall surface using the roller.

6.
Now take the remaining part of the trimmed strip and place it next to the previous piece, with an overlap of 10–15 mm. Line this strip up with the line you have drawn. Align the pattern as well as possible in the corner (you can compromise here slightly due to the overlap).

7.
Cut at the top and bottom. Wash off excess paste using a wet sponge along the seams, skirting board and cornice. Done! Now it’s just a matter of continuing as normal, strip by strip.