How To Estimate

In this example we use paper with a 15-inch repeat pattern. The covering is to be hung in a 12-foot by 15-foot room with an 8-foot ceiling, one standard door and two standard windows.

  1. Add the length and width of the room together and double it
    (12+15 = 27x2 = 54).
  2. Multiply the answer by the ceiling height (54x8 = 432 sq. ft.).
  3. Now subtract 20 sq. ft. for each of the two windows and one door (20x3 = 60).
  4. Subtract that number from the total square feet (432-60 = 372).
  5. Divide 372 by the usable yield figure in the chart below, which allows for the pattern match (372/20 = 18.6 or 20). You would need to buy 20 single rolls.

Note: Wallpaper is priced in single rolls, but is available only in double or triple rolls. In the above example, should the paper selected come in double rolls, you would need 10 rolls. If it's available only in triple rolls, you would need 7 rolls.

Approximate Square Footage
Pattern Repeat Usable Yield
0-6 inches 25 sq. ft.
7-12 inches 22 sq. ft.
13-18 inches 20 sq. ft.
19-23 inches 18 sq. ft.

Avoid Running Out
When you buy wallpaper, look for run numbers, lot numbers or run codings on the label or wallcovering. These numbers should be the same on each roll.

Wallcoverings are printed in large batches, and the colors can vary slightly - but noticeably - between the batches. To avoid the risk of running out (and to make sure you have extras in case you need to patch an area) you may wish to buy an extra roll. To be sure you have enough wallpaper to cover the room, bring all of your room measurements to our store and ask to speak to a salesperson.