Pitched Roof Calculator Metric

Pitched Roof Area Formula:

\[ \text{Pitched Area} = \text{Length} \times \frac{\text{Run}}{\cos(\text{Pitch Angle})} \]

Pitched Area:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Pitched Roof Area Calculation?

Pitched roof area calculation determines the actual surface area of a sloped roof, which is essential for material estimation, construction planning, and cost calculation in building projects.

2. How Does the Calculator Work?

The calculator uses the pitched roof area formula:

\[ \text{Pitched Area} = \text{Length} \times \frac{\text{Run}}{\cos(\text{Pitch Angle})} \]

Where:

\( \text{Length} \) — Horizontal length of the roof (meters)
\( \text{Run} \) — Horizontal distance from eaves to ridge (meters)
\( \text{Pitch Angle} \) — Angle of roof slope (degrees)

Explanation: The formula accounts for the increased surface area created by the roof pitch, converting the horizontal measurements to the actual sloped surface area.

3. Importance of Accurate Roof Area Calculation

Details: Accurate roof area calculation is crucial for determining material requirements (shingles, tiles, etc.), estimating project costs, and ensuring proper structural planning in construction projects.

4. Using the Calculator

Tips: Enter the roof length and run in meters, and the pitch angle in degrees. All values must be positive numbers, with the pitch angle between 0-90 degrees (non-inclusive).

5. Frequently Asked Questions (FAQ)

Q1: Why is the pitched area different from the floor area?
A: The pitched area accounts for the slope of the roof, which increases the surface area compared to the horizontal floor area beneath it.

Q2: How do I measure the run of a roof?
A: The run is the horizontal distance from the outside edge of the wall (eaves) to the center line of the roof (ridge).

Q3: Can I use this calculator for different roof types?
A: This calculator is specifically designed for simple gable roofs. Complex roof designs with multiple pitches may require additional calculations.

Q4: What's the difference between pitch angle and roof slope?
A: Pitch angle is measured in degrees, while roof slope is typically expressed as a ratio (e.g., 4:12). Both describe the steepness of a roof.

Q5: How accurate is this calculation for material estimation?
A: This provides a good estimate, but always add 10-15% extra material for waste, cutting, and overlaps in real construction projects.