🏠 Roof Pitch Calculator

Pitch Selection Guide

• 0.5:12 – 2:12: Flat / low-slope roofs, require special waterproofing membranes
• 2:12 – 4:12: Low-slope roofs, suitable for asphalt shingles and metal roofing
• 4:12 – 9:12: Standard residential roofs, the most common pitch range
• 9:12 – 12:12: Steep roofs, excellent drainage but harder to install
• 12:12 and above: Very steep roofs, common in Gothic and A-frame architecture