How Many Rolls?
Wallpaper comes in various widths and lengths. The numbers in our chart are based on an American "double" roll, which typically covers about 66 square feet. To calculate how many rolls you need per room, divide the total square footage of the walls (including windows and doors) by the square footage of one roll. Buy at least 10 percent more paper to accommodate errors and adjustments, such as a 4-inch allowance for each strip. For patterns with a difficult-to-match drop repeat, you should prepare to buy substantially more paper to compensate for waste. Ask your dealer's advice. Save leftovers for future repairs.

Wallpapering Tools
Except for a few specialized items such as a seam roller and a plastic smoother, the basics include many items already in your toolbox or workroom.

Roller (9 inch)
Natural sponge
Angled paintbrush (1 1/2-inch)
Seam roller
Glue syringe
Straightedge
Single-edge blades
Utility knife
Pencil
Level
Tape measure
Scissors
Narrow scraper (3-inch)
Plastic smoother (8-inch)
Wide scraper (10-inch)
Terry-cloth rags