Purchasing

To estimate how much wallpaper you'll need, multiply the space's width by its height, then divide by 50 (a standard roll covers about 56 square feet). The result, rounded up, is the number of rolls you'll need. Because rolls vary so much in price, from $30 to more than $200, it's difficult to estimate the cost of a whole room. It can range from $600 to $1,200. While prices are quoted in terms of single rolls, they're usually sold in double rolls (which are double the price). To complicate things more, commercial paper is often priced by the yard.

Hanging

Covering an entire room yourself requires patience, a steady hand and a full day or more. Several online videos on YouTube can walk you through the process, including whether to add primer to walls before beginning and how to apply paste to those papers that aren't pre-pasted. Some wallpapers, including any with texture, are more difficult to apply and better tackled by a professional wallpaper hanger. If you choose to hire a professional, prices vary, but can run around $2 per square foot of wall.

- Washington Post