1. What is Roof Square Footage Calculation?

Roof square footage calculation using satellite data determines the actual surface area of a roof by accounting for its pitch angle. This provides a more accurate measurement than simple length × width calculations for sloped roofs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( SF \) — Roof square footage (square feet)
• \( L \) — Length measurement from satellite data (feet)
• \( W \) — Width measurement from satellite data (feet)
• \( P \) — Roof pitch angle (degrees)
• \( \cos \) — Cosine trigonometric function

Explanation: The formula accounts for the increased surface area of sloped roofs by dividing the base area by the cosine of the pitch angle.

3. Importance of Roof Square Footage Calculation

Details: Accurate roof square footage is essential for roofing material estimation, cost calculations, solar panel installation planning, and insurance assessments.

4. Using the Calculator

Tips: Enter accurate length and width measurements from satellite imagery in feet, and the roof pitch angle in degrees. Pitch angles should be between 0-90 degrees (0° = flat roof, 90° = vertical wall).

5. Frequently Asked Questions (FAQ)

Q1: Why use satellite data for roof measurements?
A: Satellite imagery provides accurate, accessible measurements without physical access to the roof, making it ideal for initial estimates and remote assessments.

Q2: How accurate is this calculation method?
A: When using precise satellite measurements and correct pitch angles, this method provides highly accurate results for standard roof types.

Q3: What if my roof has multiple sections with different pitches?
A: For complex roofs, calculate each section separately using its specific dimensions and pitch, then sum the results.

Q4: Does this work for all roof types?
A: This formula works best for simple gable and hip roofs. Complex roofs with multiple valleys or dormers may require more detailed calculations.

Q5: How do I find my roof's pitch angle?
A: Pitch can be determined from architectural plans, satellite imagery analysis, or using a smartphone app designed for roof measurements.