Wallpaper in 50 × 1000 cm rolls
Wallpaper differs from a mural in that the pattern repeats — one roll, 50 cm wide and 10 metres long, covers about 5 m², and the next drop butt-joins to it. That is what lets wallpaper finish a whole room rather than a single wall.
How many rolls
Measure the room's perimeter, divide by 0.5 m and add one roll for matching the repeat around windows and doors. At a 2.6 m ceiling one roll yields almost four drops.
Three versions
Standard non-woven (115 g) for rooms, premium where the wall is uneven, waterproof for kitchens and bathrooms. Paste goes on the wall, so hanging is quicker than with paper.