How Many Rolls of Wallpaper Do You Need?
Calculate wallpaper rolls needed for any room. Account for pattern repeats, doors, and windows.
Calculating Wallpaper Rolls
A standard US double roll covers approximately 56 square feet. To find how many you need: calculate total wall area (perimeter × height), subtract doors (21 sq ft each) and windows (15 sq ft each), then divide by usable coverage per roll. Pattern repeats reduce usable coverage by 10-25% because you must align patterns across strips, creating waste at the top and bottom of each cut.
Pattern Repeat and Waste
No repeat (solid/texture): Minimal waste — each strip uses nearly all the material. Small repeat (under 6"): 10% waste. Medium repeat (7-12"): 15% waste. Large repeat (13-24"): 25% waste. Large pattern repeats look stunning but cost significantly more due to wasted material. Always order 1-2 extra rolls — you cannot reorder the same dye lot if you run short, and leftover rolls are useful for future repairs.
The #1 wallpaper mistake: not ordering from the same dye lot. Colors vary slightly between production runs. If you run out and reorder, the new rolls may not match. Always order your full quantity plus 1-2 extra rolls in a single purchase. Return unused, unopened rolls if the store allows it.
