This is how many rolls you’ll need
Begin by measuring around the walls of the room and the ceiling height. One roll of wallpaper is normally 10 metres long and 53 cm wide. For a normal ceiling height of 2.40 metres, one roll will give four lengths, unless you need to align the pattern. This table shows you how many rolls you’ll need. Expect to use more if the wallpaper is patterned and needs aligning.