1. What is Roof Pitch?

Roof pitch is a measure of the steepness or slope of a roof, expressed as a ratio of vertical rise to horizontal run. A 5/12 pitch means the roof rises 5 inches for every 12 inches of horizontal run.

2. How Does the Calculator Work?

The calculator uses the roof pitch formula:

Where:

• \( Rise \) — Vertical height (inches)
• \( Run \) — Horizontal distance (inches)

Explanation: The formula calculates the pitch as a dimensionless ratio by dividing the vertical rise by the horizontal run.

3. Importance of Roof Pitch Calculation

Details: Roof pitch is crucial for determining proper drainage, selecting appropriate roofing materials, calculating roof area, and ensuring structural integrity of buildings.

4. Using the Calculator

Tips: Enter the rise and run values in inches. Both values must be positive numbers greater than zero. The default values represent a standard 5/12 roof pitch.

5. Frequently Asked Questions (FAQ)

Q1: What does a 5/12 roof pitch mean?
A: A 5/12 pitch means the roof rises 5 inches vertically for every 12 inches of horizontal run.

Q2: Is 5/12 considered a steep roof?
A: A 5/12 pitch is considered a moderate slope, suitable for most residential applications and various roofing materials.

Q3: Can I use different units for rise and run?
A: While the calculator uses inches, you can use any unit as long as both rise and run use the same unit of measurement.

Q4: How does roof pitch affect roofing materials?
A: Different pitches require different roofing materials and installation methods. Steeper pitches generally allow water to drain more quickly.

Q5: What's the minimum pitch for proper drainage?
A: The minimum recommended pitch varies by roofing material, but generally a pitch of 2/12 or greater is needed for proper water drainage.