Home Decorating For Dummies
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If you’ve decided on wallpaper for your home improvement project, you want to make sure to buy the right amount for your needs. These formulas help you determine how much wall paper to purchase:

Wall Area:

[Total Length of All Walls] x [Wall Height] = Wall Area

Unpapered Areas:

[Window Height] x [Window Width] x [Number of Windows] = Window Area

[Door Height] x [Door Width] x [Number of Doors] = Door Area

Wallpapering Area:

[Wall Area] – [Unpapered Areas] = Wallpapering Area

Wallpaper to Order:

[Wallpapering Area] ÷ [Usable Yield] = Number of Single Rolls Needed

Usable Yield Charts:

Pattern Repeat (Drop) Usable Yield (American Rolls) Usable Yield (European Rolls)
0 to 6 in. 32 sq. ft. 25 sq. ft.
7 to 12 in. 30 sq. ft. 22 sq. ft.
13 to 18 in. 27 sq. ft. 20 sq. ft.
19 to 23 in. 25 sq. ft. 18 sq. ft.

About This Article

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About the book authors:

Katharine Kaye McMillan is a writer whose work appears regularly in magazines and newspapers. She is a contributing writer to Florida Design Magazine and the co-author of several books on decorating and design, including Sun Country Style, which is the basis for licensed signature collections of furniture and accessories by three leading American manufacturers and importers. Patricia Hart McMillan is a nationally known interior designer whose work for private clients, designer showcases, and corporations has appeared in publications worldwide, including the New York Times and USA Today. A prolific writer, McMillan is coauthor and author of seven books on interior design and decoration. She is decorating editor for Christian Woman Magazine and reports on design trends for The Sun-Sentinel in Ft. Lauderdale, Florida.

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