1. What is a Wallpaper Calculator UK with Pattern Repeat?

Definition: This calculator estimates the number of wallpaper rolls needed for a UK-standard wall, accounting for pattern repeat.

Purpose: It helps homeowners and decorators accurately purchase wallpaper while considering pattern matching requirements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( R \) — Number of wallpaper rolls needed
• \( H \) — Wall height (meters)
• \( Roll_H \) — Roll height (meters, typically 10.05m)
• \( Repeat \) — Pattern repeat length (meters)
• \( W \) — Wall width (meters)
• \( Roll_W \) — Roll width (meters, typically 0.53m)

Explanation: The calculation accounts for both vertical drops (adjusted for pattern repeat) and horizontal coverage.

3. Importance of Pattern Repeat Calculation

Details: Pattern repeat significantly affects wallpaper requirements as it determines how much extra length is needed for proper pattern matching.

4. Using the Calculator

Tips: Enter wall dimensions, roll specifications (default UK standard sizes), and pattern repeat length. All values must be ≥ 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is pattern repeat important?
A: Pattern repeat determines how much extra wallpaper is needed to match patterns between strips, affecting total material required.

Q2: What are standard UK wallpaper roll sizes?
A: Typically 10.05m long × 0.53m wide, but always check your specific product.

Q3: How do I measure pattern repeat?
A: It's the vertical distance between where the pattern repeats (usually printed on wallpaper label).

Q4: Should I add extra for mistakes?
A: Yes, consider adding 10-15% extra to account for cutting errors and future repairs.

Q5: What if my wall has windows/doors?
A: For best results, calculate the full wall area first, then subtract approximately 1 roll per standard window/door.