Estimate rolls, coverage, and cost for any room.
Complete Wallpaper Guide
Wallpaper adds texture, pattern, and personality to any room. Accurate measurements prevent costly over-ordering or frustrating shortages mid-project.
| Wallpaper Type | Durability | Best For |
|---|---|---|
| Vinyl | High | Kitchens, bathrooms, high-traffic |
| Non-Woven | Medium-High | Living rooms, bedrooms |
| Paper | Medium | Low-traffic, accent walls |
| Grasscloth | Low-Medium | Accent walls, dining rooms |
| Peel & Stick | Medium | Rentals, temporary décor |
Frequently Asked Questions
How do I calculate how much wallpaper I need?
Measure the total wall area (height × perimeter), subtract doors and windows, then divide by the usable area per roll. Standard rolls cover about 25-28 square feet after accounting for pattern matching and waste.
What is a standard wallpaper roll size?
A standard American single roll is 27 inches wide and 13.5 feet long (about 30.4 sq ft). A double roll is 27 inches × 27 feet (about 60.8 sq ft). European rolls are typically 20.5 inches × 33 feet.
How much extra wallpaper should I order for pattern matching?
For patterns with a repeat of 12 inches or less, add 10% extra. For larger repeats (12-24 inches), add 15-20%. For random or no-match patterns, 5-10% waste is sufficient.
Can I wallpaper over existing wallpaper?
It’s generally not recommended. Old wallpaper may bubble, peel, or show through. For best results, remove existing wallpaper, repair the wall surface, and apply a primer before hanging new wallpaper.
How do I measure walls with windows and doors?
Measure the full wall area first (height × width), then subtract the area of each window and door. A standard door is about 21 sq ft and a standard window is about 15 sq ft.
What tools do I need to hang wallpaper?
Essential tools include a wallpaper smoothing brush, seam roller, utility knife, straightedge, plumb line, paste brush or roller, water tray (for pre-pasted paper), sponge, and a measuring tape.
How long does wallpaper last?
Quality wallpaper can last 10-15 years or more with proper installation and care. Vinyl wallpaper is the most durable, while natural fiber wallpapers may need replacement sooner in high-moisture areas.
What is the difference between pre-pasted and unpasted wallpaper?
Pre-pasted wallpaper has adhesive already applied to the back — just soak in water to activate. Unpasted wallpaper requires you to apply wallpaper paste manually, giving more working time and often a stronger bond.
How much does wallpaper cost per roll?
Basic wallpaper starts at $15-30 per roll. Mid-range designs run $30-75 per roll. Designer and specialty wallpapers can cost $75-200+ per roll. Installation labor adds $25-75 per roll.
Can wallpaper be used in bathrooms?
Yes, but use vinyl or vinyl-coated wallpaper designed for high-moisture areas. Avoid papering inside shower enclosures. Ensure proper ventilation to prevent moisture damage and mold growth behind the wallpaper.