1. What is the Wallpaper Yardage Formula?

The wallpaper yardage formula calculates the amount of wallpaper needed for a wall, accounting for pattern repeat and waste allowance. It ensures you purchase enough material to complete your project without excessive leftovers.

2. How Does the Calculator Work?

The calculator uses the wallpaper yardage equation:

Where:

• \( WallHeight \) — Height of the wall (feet)
• \( Repeat \) — Pattern repeat length (feet)
• \( WallWidth \) — Width of the wall (feet)
• \( YardPerRoll \) — Coverage per roll (yards)
• \( Waste \) — Additional yardage for waste (yards)

Explanation: The formula accounts for the extra length needed to match patterns and adds a waste factor for trimming and errors.

3. Importance of Accurate Yardage Calculation

Details: Proper calculation prevents purchasing insufficient wallpaper (which may be from different dye lots) or excessive amounts that go unused.

4. Using the Calculator

Tips: Measure wall dimensions carefully. Include pattern repeat from wallpaper specifications. Typical waste allowance is 0.5-1 yard depending on complexity.

5. Frequently Asked Questions (FAQ)

Q1: Why add pattern repeat to wall height?
A: The repeat requires extra length to align patterns between strips, especially for large patterns.

Q2: What's a typical yardage per roll?
A: Standard American rolls cover about 4.5-5 yards, but check manufacturer specifications.

Q3: How much waste should I allow?
A: 10-15% is typical (0.5-1 yard per roll). More for complex patterns or multiple corners.

Q4: Should I round up the result?
A: Yes, always round up to the nearest whole roll when purchasing.

Q5: Does this work for all wallpaper types?
A: Mostly, but some specialty wallpapers may require different calculations.