Wallpaper Roll Sizes & Coverage
| Roll Type | Width | Length | Coverage |
|---|---|---|---|
| US Single Roll | 20.5" | 16.5 ft | ~28 sq ft |
| US Double Roll | 20.5" | 33 ft | ~57 sq ft |
| Euro Double Roll | 20.5" | 33 ft | ~56 sq ft |
| Wide Commercial Roll | 27" | 15 yd | ~101 sq ft |
Frequently Asked Questions
How many rolls of wallpaper do I need?+
Calculate gross wall area (perimeter × height), subtract 21 sq ft per door and 15 sq ft per window, add 15% waste, then divide by your roll's sq ft coverage. A US double roll covers ~57 sq ft. A 12×15 ft room at 9 ft with 1 door and 2 windows needs roughly 8–9 double rolls.
How much extra wallpaper for pattern matching?+
Plain textures and stripes: 10–15% extra. Wallpapers with a 3–6 inch pattern repeat: 15–20%. Large-repeat designs (12+ inches): 25–30%. The larger the repeat, the more you waste on matching adjacent strips. Our calculator defaults to 15% — increase it manually for patterned paper.
How many sq ft does a double roll cover?+
A US or Euro double roll covers 56–57 sq ft. But usable coverage is often less after trimming edges and matching patterns — budget for 50–54 sq ft effective coverage per double roll for plain paper, less for patterned. Always check the label; coverage is printed on every roll.
How much does it cost to wallpaper a room?+
Budget wallpaper: $15–30 per double roll. Mid-range: $30–80. Designer/specialty: $80–300+. A standard 12×15 ft room needs 8–10 double rolls. Add $200–600 for professional installation. DIY installation with pre-pasted wallpaper is accessible for first-timers on smooth walls.