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. In metric systems, it's typically calculated using meters for both measurements.

2. How Does the Calculator Work?

The calculator uses the roof pitch formula:

Where:

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

Additional Calculations: The calculator also converts the pitch ratio to percentage and angle in degrees for better understanding and practical application.

3. Importance of Roof Pitch Calculation

Details: Proper roof pitch calculation is essential for water drainage, snow load capacity, material selection, and overall structural integrity of buildings.

4. Using the Calculator

Tips: Enter rise and run values in meters. Both values must be positive numbers, with run greater than zero. The calculator will provide results in ratio, percentage, and angle formats.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical roof pitch range?
A: Residential roofs typically range from 4:12 to 12:12 pitch (18-45 degrees), but this varies by climate, architectural style, and building codes.

Q2: How does pitch affect roofing materials?
A: Steeper pitches work better with smaller overlapping materials like shingles, while lower pitches require sealed systems like built-up or membrane roofing.

Q3: What's the minimum pitch for water drainage?
A: Generally, a minimum pitch of 1:48 (approximately 1.2° or 2.08%) is recommended for proper water runoff, though this varies by roofing material.

Q4: How do I measure rise and run?
A: Rise is the vertical measurement from the top of the roof ridge to the bottom of the roof edge. Run is half the horizontal width of the building.

Q5: Can I use different units with this calculator?
A: This calculator is designed for metric units (meters). For imperial measurements, convert to meters first or use a calculator specifically designed for imperial units.